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2000 Ford Pickup F250 Super Duty TEST DE: EXHAUST BACKPRESSURE (EBP) SENSOR

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Filed Under (Ford Manuals) by admin on 10-01-2012

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DTC P0470 This DTC indicates PCM detected EBP sensor malfunction during KOEO ON-DEMAND SELF-TEST. Possible causes for this DTC are: Faulty EBP Sensor • Open Or Shorted Circuit • Faulty PCM • Ensure scan tool is connected to Data Link Connector (DLC). Using scan tool, select EBP PID from PID/DATA monitor menu. If EBP reading is less than 18.5 psi, clear DTCs. Repeat KOEO ON-DEMAND SELF-TEST . If DTC is still present, replace PCM. If EBP reading is 18.5 psi or more, go to next step. 2) Check Signal Ground Circuit Turn ignition off. Disconnect EBP sensor connector. Sensor is located on top front of engine. Inspect for damaged pins, corrosion and loose wires. Repair as necessary. Measure resistance between ground and Gray/Red wire at EBP sensor wiring harness connector. See Fig. 11 . If resistance is less than 5 ohms, replace EBP sensor. If resistance is 5 ohms or more, locate and repair open circuit in Gray/Red wire. 3) Continuous DTC P0470 This DTC indicates PCM detected a EBP sensor malfunction during normal driving conditions. Possible causes for this DTC are: Faulty EBP Sensor • Faulty Connection • Faulty PCM • Ensure scan tool is connected to Data Link Connector (DLC). Using scan tool, select EBP PID from PID/DATA monitor menu. While observing EBP PID, wiggle and bend small sections of wiring harness starting at EBP sensor connector and working toward PCM. If EBP reading fluctuates, isolate fault and repair as necessary. If reading does not fluctuate, go to next step. 4) Check Connector Disconnect EBP sensor connector. Sensor is located on top front of engine. Disconnect PCM 104-pin connector. Inspect connectors for damaged pins, corrosion and loose wires. Repair as necessary. Clear DTCs and repeat QUICK TEST . If both connectors are okay, no problem is indicted at this time. 5) DTC P0471 This DTC indicates PCM detected an EBP sensor malfunction during normal driving conditions and with EBP sensor enabled. Possible causes for this DTC are: Faulty EBP Sensor. • Plugged Or Restricted Sensor Supply Tube • Damaged Exhaust Pressure Regulator (EPR) Linkage Or Butterfly Damage • Faulty PCM • Perform KOER ON-DEMAND SELF-TEST . If any DTCs are present, repair fault(s) before continuing with this test. Using scan tool, select EBP PID from PID/DATA monitor menu. Road test vehicle performing hard accelerations while monitoring EBP PID. If EBP reading increases to more than 25 psi with EBP sensor on, no problem is indicated at this time. If EBP reading does not increase to more than 25 psi, go to next step

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Battery Electrical Drain/ Parasitic Load Test Repair Manual

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Filed Under (More Manuals) by admin on 29-05-2012

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1. Disconnect the battery negative cable 2. Install the male end of the J 38758 to the negative battery terminal. 3. Turn OFF the test switch. 4. Install the negative battery cable to the female end of the test switch. 5. Install the Scan Tool (or equivalent) or wait for 20 minutes. 6. Turn ON the test switch. 7. Road test the vehicle while activating all accessories, including the radio and the air conditioning. 8. Lower the door glass, then exit the vehicle. Do not move the door handle after closing the door. 9. Open the hood. Important The power down timer will reset to 20 minutes if any wake up inputs are received by a Class 2 device (after the scan tool has put all Class 2 devices to sleep). 10. Put all of the Class 2 devices into the sleep mode. 11. Turn OFF the ignition switch. Remove the key. Important From this point on, electrical continuity must be maintained in the ground circuit of the battery through the Test Switch J 38758 in the ON position or through the ammeter J 39200 . 12. Components such as PCM, VCM, Automatic Air Conditioning, and the Truck Body Control Module have timers that draw several amps of current while they cycle down. This can give a false parasitic drain reading. Wait 20 minutes for these components to power down before continuing this test (or use the scan tool to put all Class 2 devices to sleep). 13. Connect a jumper wire with a 10 A fuse J 36169-A to the terminals of the test switch. 14. Turn the test switch to the OFF position. 15. Wait ten seconds. If the fuse does not blow, the current is less than 10 A. The ammeter can be used safely. 16. Before the fused jumper wire is removed, turn the test switch to the ON position. Important If an ammeter other than the J 39200 is used, ensure that the vehicle does not have a high current drain that would damage the ammeter when connected to the circuit. 17. Perform the following procedure in order to detect a high current drain: A. Set the ammeter J 39200 to the 10 A scale. B. Connect the ammeter to the test switch terminals. C. Turn OFF the test switch. This allows the current to flow through the ammeter. D. Wait one minute, then inspect the current reading. Ñ When there is a current reading of 2 A or less, turn ON the test switch, this maintains continuity in the electrical system. Ñ Then, switch the meter down to the 2 A scale, for a more accurate reading, when the test switch is reopened. E. Open the test switch. F. Take the reading in milliamps. G. Note the battery reserve capacity. Refer to Battery Usage . Ñ Divide this number by 4. Example: 90/4 = 22.5 Ñ Compare this to the ammeter reading. Ñ The current drain in milliamps should not exceed this number. Ñ Example: if a battery has a reserve capacity of 90 minutes, the current drain should not exceed 22 milliamps. H. When the current draw is too high, remove the electrical system fuses one at a time until the draw returns to a value less than or equal to specifications. Ñ Start with the fuses that are hot all the time. Ñ To remove the fuse, you must first open the door, which causes a high enough current flow to damage the ammeter. Ñ Protect the ammeter, without disturbing the electrical continuity, by turning ON the test tool before opening the door. Ñ Remove the courtesy lamp fuse. Ñ Note the ammeter reading. Ñ If the parasitic load is still excessive, start removing the remaining fuses one at a time. Ñ Keep the courtesy lamp fuse out during diagnosis, so the door can remain open. Ñ Perform Steps 11 through 13 each time a fuse is removed. I. Removing the PCM or VCM fuse should cause a drop of less than 10 milliamps. A drop greater than 10 milliamps indicates a possible short to ground. J. Check the orange wires along with the components connected to the orange wires. No drop in the milliampere reading indicates the PCM or VCM is not drawing current. K. Repeat the parasitic current drain test procedure after any repair has been completed. L. When the cause of the excessive current draw has been located and repaired, remove the ammeter and the parasitic draw test switch.

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2007 HONDA ODYSSEY SPLASH GUARDS INSTALLATION INSTRUCTIONS

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Filed Under (Honda Manuals) by admin on 14-10-2011

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INSTALLATION NOTE: •These instructions show the left splash guards being installed. The same procedure applies to installing the right splash guards. •Clean and wax the areas to be covered with a high-quality paste wax. Installing the Front Splash Guards 1. Turn the steering wheel all the way counter clockwise to provide access to the left front fenderwell. 2. Remove the two self-tapping screws from the left front inner fender. PARTS LIST Right front splash guard Left front splash guard Right rear splash guard Left rear splash guard 6 Self-tapping screws 2 Spring nuts 2 Square head grommets 3. Using a pushpin, make a small hole through the center of the upper clip. UPPER CLIP PUSHPIN SELF-TAPPING SCREW LEFT FRONT INNER FENDER SPLASH GUARDS P/N 08P00-SHJ-101 2 of 2 All 33039-33598 (0608) LEFT REAR SPLASH GUARD SELF-TAPPING SCREW LEFT REAR FENDERWALL SELF- TAPPING SCREW (reused) REAR BUMPER LEFT REAR SPLASH GUARD There must be no clearance. REAR BUMPER LEFT FRONT INNER FENDER LEFT FRONT SPLASH GUARD LEFT FRONT INNER FENDER SELF- TAPPING SCREW LEFT FRONT SPLASH GUARD CLIP CLIP SELF- TAPPING SCREW SELF-TAPPING SCREW (reused) LOWER HOLE 5. While holding the left splash guard against the fender, tighten the self-tapping screws in the order shown. 6. Turn the steering wheel all the way clock wise and repeat steps 2 through 4 to install the right front splash guard. Installing the Rear Splash Guard 7. Using a floor jack, lift up the left rear side of the vehicle according to the service manual. 8. Remove the self-tapping screw from the rear bumper. Using a pushpin, make a hole through the center of the recess. 9. Install one square head grommet into the hole in the left rear fenderwall. Slide one spring nut over the hole you made in step 8 in the rear bumper. 10. Position the left rear splash guard on the left rear fenderwall and rear bumper, and loosely install one self-tapping screw you removed, and the two self-tapping screws supplied with the kit. LEFT REAR FENDERWALL REAR BUMPER SELF-TAPPING SCREW (Reuse.) SQUARE HEAD GROMMET SPRING NUT RECESS PUSHPIN REAR BUMPER With RECESS SELF- TAPPING SCREW 4. Install the left front splash guard using the two self-tapping screws removed in step 2, and one self-tapping screw supplied with the kit. Do not tighten the self-tapping screws yet. 11. Hold the left rear splash guard against the fenderwall and check that there is no clearance between the splash guard and rear bumper. Tighten the three self-tapping screws in the sequence shown. 12. Repeat steps 7 thru 11 to install the right rear splash guard

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1995 Toyota 4Runner STARTING AND CHARGING SYSTEMS REPAIR MANUAL

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Filed Under (Toyota Manuals) by admin on 15-03-2012

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TROUBLE SHOOTING NOTE: See TROUBLE SHOOTING – BASIC PROCEDURES article in GENERAL INFORMATION. 1) If a no-start condition exists and battery is known to be good, connect test light or voltmeter between starter solenoid terminal No. 50 and ground. See Figs. 6 and 7. 2) Turn ignition switch to START position. If test light or voltmeter does not indicate voltage, check main fusible links and large ampere main fuses in engine compartment relay box. If fusible links and fuses are okay, see IGNITION SWITCH CONTINUITY TEST and/or STARTER RELAY TEST under ON-VEHICLE TESTING. ON-VEHICLE TESTING NOTE: Before testing, ensure battery is fully charged, battery cables and terminal ends are tight and clean, and engine grounds are secure. CLUTCH START SWITCH TEST 1) Switch is located above clutch pedal on bracket. Disconnect wiring harness connector from switch. 2) Connect ohmmeter probes to switch terminals. Depress clutch pedal. If continuity does not exist, adjust or replace clutch start switch. If continuity exists, check circuit to starter relay for open, and check starter relay. See STARTER RELAY TEST. CLUTCH START CANCEL SWITCH TEST 1) Locate switch in left dash panel. Remove right lower instrument panel to access switch connector. Disconnect wiring harness connector from switch pigtail connector. See Fig. 1. 2) Connect negative lead of ohmmeter to terminal No. 1. Ensure continuity does not exist between connector terminals No. 1 and 2, terminals No. 1 and 3, and terminals No. 2 and 3. Check operation of switch by connecting jumper wires from 12-volt battery. Connect positive lead to terminal No. 3 and negative battery lead to terminal No. 1. 3) Using ohmmeter, ensure continuity does not exist between connector terminals No. 1 and 2 until switch button is pushed. When switch button is pushed, switch light should come on and continuity should exist. Disconnect battery and ensure continuity does not exit between terminals No. 1 and 2. If switch does not test as specified, replace switch. Fig. 1: Identifying Clutch Start Cancel Switch Connector Terminals Courtesy of Toyota Motor Sales, U.S.A., Inc. IGNITION SWITCH CONTINUITY TEST WARNING: Deactivate air bag system before performing any service operation. For 1996 4Runner, see AIR BAG RESTRAINT SYSTEM article. 1995 1) Disconnect negative battery cable. Removedriver’s lower instrument panel cover. Remove upper and lower steering column covers if needed. Locate ignition switch wiring harness 8-pin connector. See Figs. 2-3. 2) With ignition switch in LOCK position, there should be no continuity between any terminals. With ignition switch in ACC position, there should be continuity between terminals No. 2 and 3. With ignition switch in ON position, there should be continuity between terminals No. 1, 2 and 3, and between terminals No. 7 and 8. 3) With ignition switch in START position, there should be continuity between terminals No. 1, 4 and 6, and between terminals No. 7 and 8. If continuity is not as specified, replace switch.

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2001 Dodge Dakota CENTRAL TIMER MODULE REMOVAL AND INSTALLATION MANUAL

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Filed Under (Dodge Manuals) by admin on 28-06-2012

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1. Connect scan tool to Data Link Connector (DLC), under lower left side of instrument panel. Turn ignition on. Using scan tool, attempt to communicate with Air Bag Control Module (ACM) and Controller Antilock Brake (CAB) module. If scan tool is able to identify or communicate with ACM and CAB, go to next step. If scan tool is not able to identify or communicate with ACM and/or CAB, perform appropriate DTC or symptom test. See DIAGNOSTIC TROUBLE CODE IDENTIFICATION and SYMPTOM IDENTIFICATION tables under SELF-DIAGNOSTIC SYSTEM. 2. Turn ignition off. Disconnect Gray 26-pin Central Timer Module (CTM) connector C1. CTM is located behind left side kick panel. Ensure interior lights are off. Using DVOM, measure resistance between ground and Gray 26-pin CTM connector C1 terminals No. 1 and 16 (Black/Light Green wires) and No. 2 (Black wire). See Fig. 5 . If resistance is 10 ohms or less on each ground circuit, go to next step. If resistance is more than 10 ohms on any ground circuit, check for an open between appropriate CTM connector terminal and ground. See GROUND DISTRIBUTION article in WIRING DIAGRAMS. Repair as necessary. 3. Disconnect Gray 12-pin CTM connector C3. Using test light connected to ground, probe Gray 12-pin CTM connector C3 terminals No. 1 (Red/Tan wire) and No. 6 (Red/Light Green wire). See Fig. 8 . If test light illuminates on both circuits, go to next step. If test light does not illuminate on both circuits, check for open in appropriate circuit between power distribution center and CTM. See POWER DISTRIBUTION article in WIRING DIAGRAMS. Repair as necessary. 4. Turn ignition on. Using scan tool, ensure there is PCI BUS communication with other modules (besides the ACM and CAB). If scan tool is able to identify or communicate with all modules, go to next step. If scan tool is not able to identify or communicate with all modules, refer to appropriate communications symptom for diagnosis. See DIAGNOSTIC TROUBLE CODE IDENTIFICATION table under SELF-DIAGNOSTIC SYSTEM. 5. Connect Scope Input Cable (CH7058) to channel one connector on scan tool. Connect Cable-To-Probe Adapter (CH7062) and Black and Red test probes to scope input cable. Connect Black test probe to ground. Connect Red test probe to PCI BUS circuit at Gray 26-pin CTM connector C1 terminal No. 10 (Violet/Yellow wire). 6. Using scan tool, select PEP MODULE TOOLS, LAB SCOPE, LIVE DATA. Select 12 VOLT SQUARE WAVE. Press F2 for SCOPE. Press F2 and use DOWN arrow to set voltage scale to 20 volts. Press F2 again when complete. Turn ignition on. If reading on lab scope toggles between zero and 7.5 volts, go to next step. If reading on lab scope does not toggle between zero and 7.5 volts, repair open in PCI BUS circuit (Violet/Yellow wire). 7. Replace CTM. See CENTRAL TIMER MODULE under REMOVAL & INSTALLATION

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1993 Ford Escort CIRCUIT TEST J – FUEL PUMP CIRCUIT (RELAY AND INERTIA SWITCH)

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Filed Under (Ford Manuals) by admin on 19-01-2012

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resistance between test pin No. 22 and test pins No. 40 and 60. If resistance is less than 10,000 ohms, repair short circuit and repeat QUICK TEST. If resistance is 10,000 ohms or more, go to step 5). 5)Check Fuel Pump Circuit Continuity Turn ignition off. Leave fuel pump relay and PCM disconnected. Measure resistance between FUEL PUMP circuit at fuel pump relay wiring harness connector and test pin No. 22 at breakout box. If resistance is less than 5 ohms, replace PCM and repeat QUICK TEST. If resistance is 5 ohms or more, repair open circuit and repeat QUICK TEST. 10)Code 95/542 A KOEO Code 95/542 indicates one of the following conditions: Engine Starts: * Fuel pump secondary circuit shorted to power. * Fuel pump relay contacts always closed. * Open FPM circuit between PCM and junction to POWER-TO-PUMP circuit. * Left/front HO2S short to power (dual HO2S applications). * Faulty PCM. No Start: * IFS switch circuit open or not reset. * Open circuit in or between PCM and fuel pump. * Faulty ground connection at fuel pump. * Faulty fuel pump. If engine starts, go to step 11). If engine does not start, go to step 15). 11)Check Fuel Pump Operation Turn ignition on. Wait 5 seconds. Listen for fuel pump operation. If fuel pump is off, go to step 13). If fuel pump is on, go to step 12). 12)Check For Fuel Pump Relay Always Closed Turn ignition off. Disconnect fuel pump relay. Turn ignition on. If fuel pump is off with relay disconnected, replace fuel pump relay and repeat QUICK TEST. If fuel pump is on with relay disconnected, repair short to power in POWER-TO-PUMP or FPM circuit. (For models with relay block, also check fuel pump prime plug circuit). Repeat QUICK TEST. 13)Check Continuity Of Fuel Pump Monitor (FPM) Circuit Turn ignition off. Disconnect PCM 60-pin connector. Inspect and repair any damaged terminals. Install EEC-IV Breakout Box (T83L-50-EEC-IV) , leaving PCM disconnected. Disconnect fuel pump relay. Measure resistance between test pin No. 8 (No. 19 on Escort, and Tracer) at breakout box and POWER-TO-PUMP circuit at fuel pump relay wiring harness connector. If resistance is less than 5 ohms, go to step 25) (dual HO2S) or replace PCM and repeat QUICK TEST (single HO2S). If resistance is 5 ohms or more, repair open circuit and repeat QUICK TEST

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2004 Ford Explorer/Mountaineer Anti-Lock Brake System (ABS) Module Diagnostic Trouble Code (DTC) Index Repair Manual

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Filed Under (Ford Manuals) by admin on 20-05-2011

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C1963 Stability Control Inhibit Warning ABS Module This DTC is for information only. CLEAR the DTC. REPEAT the self-test. C1991 Module Calibration Failure ABS Module Follow the diagnostic tool directions for the calibration procedure. C1996 Active Yaw Control Disabled ABS Module This DTC will be set if the stability assist system is activated for 15 seconds of continuous operation. CHECK for any major chassis modifications, gross suspension misalignment, or other items that can alter the vehicle tracking dynamics. CLEAR the DTC. REPEAT the self-test. C1998 Module Calibration Not Complete ABS Module Go To Pinpoint Test Q . C2769 (ABS only) Longitudinal Acceleration Sensor Circuit Failure ABS Module CLEAR the DTC. REPEAT the self-test. If DTC C2769 is present, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module in this section. C2769 (ABS with stability assist) Longitudinal Acceleration Sensor Circuit Failure ABS Module Go To Pinpoint Test H . C2770 (ABS with Stability Assist) Longitudinal Acceleration Sensor Signal Fault ABS Module Go To Pinpoint Test H . C2770 (ABS only) Longitudinal Acceleration Sensor Signal Fault ABS Module CLEAR the DTC. REPEAT the self-test. If DTC C2770 is present, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module in this section. C2777 Sensor Cluster Bus Failure ABS Module Go To Pinpoint Test H . C2778 Sensor Cluster Power Supply Failure ABS Module Go To Pinpoint Test H . U1900 CAN Communication Bus Fault-Receive Error Network Fault Section 418-00 . U1901 CAN Network #2 Communication Bus Fault- Receive Error Network Fault Go To Pinpoint Test H . U2023 Fault received from external node Network Fault Section 418-00

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2003 Honda Accord EX A/ T INTERLOCK SYSTEM REPAIR MANUAL

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Filed Under (Honda Manuals) by admin on 21-01-2012

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A/T Interlock System Circuit Diagram SHIFT LOCK SYSTEM CIRCUIT TROUBLESHOOTING 1. Press the brake pedal. Are the brake lights ON? YES -Go to step 2. NO -Repair faulty brake light circuit. 2. Connect the HDS to the DLC. Check engine speed and throttle position in the A/T data list. Is the engine speed at idle, and TPS about 0.5 V? YES -Go to step 3. NO -Repair engine speed or throttle position input. 3. Select SHIFT LOCK SOL TEST in MISC. TEST MENU, then carry out shift lock solenoid function test. Does the shift lock solenoid work properly? YES -System circuit is OK. Check the shift lock mechanism, if necessary. NO -Go to step 4. 4. Remove the center console (See CENTER CONSOLE REMOVAL/INSTALLATION ). 5. Disconnect the shift lock solenoid connector. 6. Turn the ignition switch ON (II). 7. Measure the voltage between No. 1 terminal of the shift lock solenoid connector and body ground. Fig. 3: Measuring Voltage Between No. 1 Terminal Of Shift Lock Solenoid Connector & Body Ground Is there battery voltage? YES -Go to step 8. NO -Check for blown No. 21 fuse in the under-dash fuse/relay box. If the fuse is OK, repair open in the wire between the shift lock solenoid connector and the under-dash fuse/relay box. 8. Shift the shift lever into the P position, and press the brake pedal. Do not press the accelerator. 9. Measure the voltage between shift lock solenoid connector terminals while pressing the brake pedal Fig. 4: Measuring Voltage Between Shift Lock Solenoid Connector Terminals Is there battery voltage? YES -Check the shift lock mechanism. If the mechanism is OK, replace the shift lock solenoid (see Shift Lock Solenoid Replacement ). NO -Check for poor or loose PCM connector terminal E2 at the PCM, and check for an open in the wire between PCM connector terminal E2 and shift lock solenoid connector. If the connection and wire is OK, substitute a known-good PCM and recheck. KEY INTERLOCK SYSTEM CIRCUIT TROUBLESHOOTING

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2002 Chrysler Voyager LX Power Windows TROUBLE SHOOTING/ SYSTEM TESTS

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Filed Under (Chrysler Manuals) by admin on 19-11-2011

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ALL WINDOWS INOPERATIVE 1. Check power window system circuit breaker and fuse. See TROUBLE SHOOTING . Replace components as necessary. If components are okay, go to next step. 2. Remove driver’s power window switch. See POWER WINDOW SWITCH under REMOVAL & INSTALLATION. Turn ignition on. Using test light, connect ground lead to harness connector terminal No. 13 (Black/Brown wire). Check for voltage by touching test light probe to harness connector terminals No. 9, 11 and 14 (all White/Pink wires). 3. If test light does not illuminate, check power and ground circuits. See WIRING DIAGRAMS . If test light illuminates, ground circuit and power circuit between battery and switch are okay. Check switch and motor. See POWER WINDOW SWITCH and POWER WINDOW MOTOR under COMPONENT TESTS. COMPONENT TESTS VENT WINDOW MOTOR 1. Remove “D” pillar trim panel. See “D” PILLAR TRIM PANEL under REMOVAL & INSTALLATION. 2. Disconnect power vent window motor wire connector from body harness. 3. Using 2 jumper wires, connect one to a battery (+) source and the other to a good ground (-). 4. Connect the negative (-) jumper probe to one of the motor connector terminals. 5. Momentarily touch the positive (+) jumper probe to the other motor connector terminal. When the positive probe is connected, the motor should rotate in one direction to either move window open of closed. If window is all the way open or closed the motor will grunt and the crank system will flex when actuated in the one direction. Reverse jumper probes at the motor connector terminals and window should now move in the opposite position to verify full operation. If motor grunts and does not move with the motor connected in both directions, verify that crank system is not binding. POWER WINDOW MOTOR 1. Remove door trim panel and sound pad. See DOOR TRIM PANEL under REMOVAL & INSTALLATION. 2. Disconnect power window motor wire connector from door harness. 3. Using 2 jumper wires, connect one to a battery (+) source and the other to a good ground (-). 4. Connect the negative (-) jumper probe to one of the motor connector terminals. POWER WINDOW SWITCH 1. Remove window switch from door trim panel. See POWER WINDOW SWITCH under REMOVAL & INSTALLATION. Using an ohmmeter, check switch continuity. See appropriate WINDOW SWITCH CONTINUITY table. See Fig. 1 or Fig. 2 . 2. If the results are NOT OK, replace the drivers side window lift switch. 3. Test passenger door switch for continuity. 4. If the results are not OK, replace the switch. The power window master switch has a Auto-Down feature. The switch is equipped with 2 detent positions when actuating the power window OPEN. The first detent position allows the window to roll down and stop when the switch is released. The second detent position actuates an integral express roll down relay that rolls the window down after the switch is released. When the express down circuit senses stall current (window has reached end of down travel), the switch will turn current off to the motor. The AUTO feature can be cancelled by actuating the switch UP or DOWN while window is in motion. If the electronic circuit in the switch fails to detect a stall current, the auto down circuit will time out within 9 to 13 seconds.

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1998 Acura 3.5RL FUEL PUMP RELAY (3.5RL) INSTALLATION MANUAL

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Filed Under (Acura Manuals) by admin on 13-06-2011

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Fuel pump relay is located in the front of the trunk. Turn ignition switch to START position. If engine starts, go to next step. If engine does not start, go to FUEL PUMP RESISTOR (3.5RL) . 2. Turn engine off and ignition on. Measure voltage between ground and PCM 12-pin connector terminal No. 4 (Green wire). If battery voltage is present, go to next step. If battery voltage is not present, go to step 4). 3. Start engine and run at 3000 RPM with no loads and transmission in Park or Neutral, until radiator fan comes on. Allow engine to idle for at least one minute. Turn engine off. Disconnect vacuum hose No. 21 from vacuum manifold. Apply 8-12 in. Hg (27-40 kPa) vacuum to Manifold Absolute Pressure (MAP) sensor. Start engine and run at 6500 RPM with no loads and transmission in Park or Neutral. Measure voltage between ground and PCM 12-pin connector terminal No. 4 (Green wire). If less than one volt is present, fuel pump relay circuit is okay. If one volt or more is present, substitute a known good PCM, then recheck. If symptom or indication goes away, replace original PCM. 4. Turn ignition off. Disconnect PCM 26-pin and 12-pin connectors. Disconnect fuel pump relay 4-pin connector. Using a fused jumper wire, connect fuel pump relay connector terminals No. 2 (Red/White wire) and No. 4 (Green wire). Turn ignition on. Measure voltage between ground and PCM 12-pin connector terminal No. 4 (Green wire). If battery voltage is not present, go to next step. If battery voltage is present, replace fuel pump relay. 5. Remove jumper wire. Measure voltage between ground and fuel pump relay 4-pin connector terminal No. 2 (Red/White wire). If battery voltage is present, repair open or short in Green wire between PCM and fuel pump relay. If battery voltage is not present, repair open in Red/White wire between fuel pump relay and FUEL PUMP fuse No. 22 (20-amp), located in underdash fuse/relay box. FUEL PUMP RESISTOR (3.5RL) 1. Fuel pump resistor is located in the left corner of the trunk. Disconnect fuel pump resistor 2-pin connector. Turn ignition on and measure voltage between ground and fuel pump resistor connector terminal No. 2 (Yellow wire) within 2 seconds. If battery voltage is present for 2 seconds after ignition is turned on, go to next step. If battery voltage is not present as specified, check PGM-FI relay. See PGM- FI MAIN RELAY . 2. Turn ignition off. Using a jumper wire, connect fuel pump resistor connector terminals No. 1 (Black/Yellow wire) and No. 2 (Yellow wire). Turn ignition switch to START position. If engine does not start, go to next step. If engine starts, replace fuel pump resistor. 3. Turn ignition off. Disconnect fuel unit sub-harness Gray, 10-pin connector located in front of trunk, above fuel pump access panel, next to Gray, 20-pin connector. Turn ignition on and measure voltage between ground and sub-harness connector terminal No. 7 (Black/Yellow wire) within 2 seconds. If battery voltage is present for 2 seconds after ignition is turned on, check fuel pump. If battery voltage is present as specified, repair open in Black/Yellow wire between fuel pump resistor and fuel pump

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