Skip to content

2008 silverado fuel pump control module tricks

You search PDF repair manual about 2008 silverado fuel pump control module tricks, if there are search results will appear below. If search results do not exist, please search by others keyword.

1998 Dodge Grand Caravan Fuel Pump Relay Removal And Installation Manual

download
Fuel Pump Relay 1. Remove fuel pump relay from power distribution center at driver’s side front corner of engine compartment, near the battery. Note terminal identification on fuel pump relay. See Fig. 6 . 2. To check fuel pump relay resistance, use ohmmeter and check resistance between terminals No. 85 and 86 on fuel pump relay. Replace fuel pump relay if resistance is not 70-80 ohms. 3. To check fuel pump relay operation, connect ohmmeter between terminals No. 30 and 87A on fuel pump relay. See Fig. 6 . Ohmmeter should indicate continuity between terminals No. 30 and 87A on fuel pump relay. 4. Connect ohmmeter between terminals No. 30 and 87 on fuel pump relay. See Fig. 6 . Ohmmeter should indicate no continuity between terminals No. 30 and 87 on fuel pump relay. 5. Connect 16-gauge jumper wire between negative battery terminal and terminal No. 85 on fuel pump relay. Connect 16-gauge jumper wire between positive battery terminal and terminal No. 86 on fuel pump relay. 6. Fuel pump relay should now be energized. No continuity should now exist between terminals No. 30 and 87A on fuel pump relay. Continuity should now exist between terminals No. 30 and 87 on fuel pump relay. Disconnect jumper wires. Replace fuel pump relay if defective. 7. If fuel pump relay or wiring circuit failure exists, a Diagnostic Trouble Code (DTC) will be stored in Powertrain Control Module (PCM). See appropriate G – TESTS W/CODES article. Fig. 6: Identifying ASD Relay & Fuel Pump Relay Terminals Courtesy of CHRYSLER CORP.

1997 Dodge Grand Caravan POWERTRAIN CONTROL MODULE REMOVAL AND INSTALLATION MANUAL

download
POWERTRAIN CONTROL MODULE (PCM) Removal & Installation 1. The PCM is located between driver’s side front fender and power distribution center, near battery. See Fig. 1 . Disconnect negative battery cable and then positive battery cable from battery. 2. Remove bolts on side of power distribution center that secure power distribution center to mounting bracket. Remove heat shield from outside of battery. Remove battery. 3. Rotate power distribution center toward the engine to disengage power distribution center from rear mounting bracket. Pull power distribution center toward rear of vehicle to disengage power distribution center from front mounting bracket. 4. Allow power distribution center to lay aside for access to PCM. Remove electrical connectors from PCM. Electrical connectors may be removed by squeezing tabs on electrical connector together and pulling electrical connector from PCM. Remove bolts and PCM. To install, reverse removal procedure. Vehicles equipped with engine or transmission computers may require a relearn procedure after the vehicle battery is disconnected. Vehicle computers memorize and store vehicle operation patterns for optimum driveability and performance. When the vehicle battery is disconnected, this memory is lost. Default data is used until new data from each key start is stored. As the computer restores its memory from each new key start, driveability is restored. Driveability problems may occur during the relearn stage. Depending on the vehicle and how it is equipped, the following driveability problems may exist: z Rough or unstable idle. z Hesitation or stumble. z Rich or lean running. z Poor fuel mileage. z Harsh or poor transmission shift quality. To accelerate relearn process after battery removal and installation, vehicle should be road tested in the following manner: z Vehicle at normal operating temperature (cooling fan cycles). z Accelerate at normal throttle position (20-50%). z Cruise at light to medium throttle. z Decelerate to a stop, downshifting and using brakes normally. Manufacturers identify specific relearn procedures. See RELEARN PROCEDURES. Always complete the procedure before returning the vehicle to the owner. RELEARN PROCEDURES Theft Alarm Relearn Procedure 1. Theft alarm relearn is necessary whenever battery is disconnected or dead battery is boosted. If battery is connected or boosted without conducting relearn procedure, alarm system will enter power-up mode and vehicle will not start. 2. Before reconnecting battery or connecting booster, insert door key into driver side door lock

1994 Ford Thunderbird LX FUSES AND CIRCUIT BREAKERS MANUAL

download
2 – 6-Amp Circuit Breaker Windshield Wiper & Washer Pump, Interval Wiper 3 – Not Used 4 – 15 Amp Taillights, License & Parking Lights, Side Marker & Coach Lights, Cluster Illumination Lights, Radio & Clock Illuminator, A/C-Heater Illumination 5 – 15 Amp Turn Signal & Back-Up Lights, Keyless Entry Illumination, Day/Night Mirror, Turbo Overboost Buzzer 6 – 20 Amp Heated Back Light Control, Deck Lid Release, Electronic Chime Module, Lights Outage & Clock Display, Cornering & Rear Reading Lights, Tripminder, Illuminated Entry, Anti-Theft Module, Radio & Cluster Illumination 7 – 15 Amp Foglights (Turbo Only) 8 – 15 Amp Courtesy & Glove Box Lights, Key Warning Buzzer, Illuminated Entry Module, Remote Electric Mirrors, Electronic Radio & Cluster Memories, Anti-Theft Relay & Clock 9 – 30 Amp A/C-Heater Blower Motor 10 – 20 Amp Horn, Cigarette Lighter, Flash-To-Pass Feature, Fuel Filler Door, Speed Control 11 – 20 Amp Radio, Power Antenna, Sound Amplifier 12 – 20-Amp Circuit Breaker Power Seat & Door Locks, Keyless Entry, Fuel Filler Door Lock 13 – 5 Amp Instrument Cluster, Radio, Climate Control, Instrument Panel Illumination 14 – 20-Amp Circuit Breaker Power Windows, Power Moon Roof 15 – 10 Amp Taillights, Parking Lights, License & Coach Lights 16 – 4 Amp EATC Memory, Horn, Cigarette Lighter 17 – 15 Amp Electronic Cluster Tripminder, Fuel Gauge, A/C Clutch, Speed Control Module, Graphic Warning Module 18 – 10 Amp Warning Indicator Lights, Auto Light System, Electronic Chimes, Low Washer Fluid Light, Low Fuel Module, Throttle Solenoid Positioner, Low Oil Relay, Tachometer, Flash-To-Pass Relay

1998 Chevrolet Chevy K Pickup DTC P1626 Theft Deterrent Fuel Enable Signal Not Received Repair Manual

download
An intermittent may be caused by any of the following conditions: Thoroughly check any circuitry that is suspected of causing the intermittent complaint. Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems. If a repair is necessary, refer to Wiring Repairs or Connector Repairs in Wiring Systems. Test Description The number(s) below refer to the step number(s) on the diagnostic table. 2. This test checks if communication can be established between the scan tool and the VTD. If the scan tool cannot communicate with the VTD, refer to Diagnostic System Check – Theft Deterrent in Theft Deterrent. 3. This test checks for any opens in the serial data circuit between the VCM and the VTD. This also checks for any intermittent malfunctions associated with the serial data circuit. 4. This step is to determine if the condition that set the DTC is still present. The engine must be cranked in order to set this DTC. If the condition is present, the engine will start and then stall, indicating the VCM is disabling fuel. 7. Use a scan tool to clear and check for any DTCs in all the modules connected to the Class 2 Serial Data circuit (VCM, VTD, ATC, and BCM). the module itself. After repairing the cause of DTC P1626, clear all DTCs from the systems capable of storing this DTC and DTC U1192. 1 Important: Before clearing the DTCs, use the scan tool Capture Info to save the Freeze Frame and Failure Records for reference. The control module’s data is deleted once the Clear Info function is used. Did you perform the Powertrain On-Board Diagnostic (OBD) System Check? — Go to Step 2 Go to Powertrain On Board Diagnostic (OBD) System Check 2 1. Install the scan tool. 2. Turn ON the ignition leaving the engine OFF. 3. Attempt to establish communications with the VTD (Passlock) Control Module. Does the scan tool communicate with the VTD (Passlock) Control Module? — Go to Step 3 Go to Diagnostic System Check – Theft Deterrent in Theft Deterrent 3 Check the Class 2 Serial Data circuit for the following intermittent conditions: Did you find a problem? • An open in the Class 2 Serial Data circuit between the VCM and the VTD (Passlock) Control Module. • A short to ground. • A short to voltage. • Loose or damaged terminals at the DLC, VCM or the VTD (Passlock) Control Module. — Go to Step 6 Go to Step 4 4 1. Turn OFF the ignition. 2. Connect or install any connectors or components that were disconnected or removed. 3. Clear all DTCs using a scan tool. 4. Turn OFF the ignition for 15 seconds. 5. Attempt to start the engine. Does DTC P1626 reset? — Go to Diagnostic System Check – Theft Deterrent in Theft Deterrent Go to Step 5 5 This DTC is intermittent. Are any additional DTCs stored? — Go to the applicable DTC table Go to Diagnostic Aids 6 Repair the circuit as necessary. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the action complete?

2000 Ford Windstar INCORRECT FUEL GAUGE INDICATION Workshop Manual

download
The fuel gauge does not change indication unless there has been at least 3 gallons of fuel added or deleted between ignition switch cycle. Use recorded REM and instrument cluster DTCs from the Continuous and On- Demand self-test. ? Are any DTCs recorded? Yes If REM DTC B1201 or IC DTC U1131 is retrieved, GO to D6 . No GO to D2. D2 CARRY OUT THE ICM FUEL GAUGE ACTIVE COMMAND IC Active Command Select the IC FUEL GAUGE CONTROL active command. Trigger FUELLEVEL active command. Toggle and monitor the fuel gauge while adjusting the FUELLEVEL active command to read 50% and 100% Did the fuel gauge needle start at empty (E), move to half at 50%, and full (F) at 100%? Yes GO to D3. No INSTALL a new instrument cluster; REFER to Instrument Cluster. CLEAR the DTC. REPEAT the instrument cluster self-test. D3 CHECK THE FUEL GAUGE READING Fuel Pump Module C412 Connect one lead of Instrument Gauge System Tester to fuel pump module C412 Pin 5, Circuit 1357 (LB/YE), harness side. Connect the other lead to fuel pump module C412 Pin 8, Circuit 1356 (LG/VT), harness side. Set the power switch on Instrument Gauge System Tester to the ON position Set Instrument Gauge System Tester to 15 ohms. Wait one minute. Set Instrument Gauge System Tester to 160 ohms. Wait one minute. Read the fuel gauge. The fuel gauge should read full or above. Set Instrument Gauge System Tester to 15 ohms. Wait one minute. Read the fuel gauge. The fuel gauge should read empty or below Does the fuel gauge operate correctly? Yes GO to D4. No GO to D6. D4 INSPECT THE FUEL TANK Visually inspect the fuel tank for any damage or deformation. ? Is the fuel tank OK? Yes GO to D5. No INSTALL a new fuel tank. REFER to Section 310-01. TEST the system for normal operation. D5 INSPECT THE FUEL LEVEL SENSOR AND PUMP ASSEMBLY Visually inspect the fuel pump assembly for damaged wiring or connectors. Visually inspect the float and float rod for damage or obstruction