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location of theft deterrent module on a 98 chevy pickup

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

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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?

2004 Chevrolet Monte Carlo SS SCHEMATIC AND ROUTING DIAGRAMS THEFT DETERRENT SYSTEM SCHEMATICS

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DIAGNOSTIC SYSTEM CHECK – THEFT DETERRENT Test Description The number(s) below refer to the step number(s) on the diagnostic table. 2: Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition. 5: The presence of DTCs which begin with “U” indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed. 6: The listed DTCs are internal module malfunctions and should be corrected before attempting any other diagnostics. 7: The listed DTCs are battery voltage related malfunctions and should be corrected before attempting any other diagnostics. Diagnostic System Check – Theft Deterrent Step Action Yes No 1 Install a scan tool. Does the scan tool power up? Go to Step 2 Go to Scan Tool Does Not Power Up in Data Link Communications 2 1. Turn ON the ignition, with the engine OFF. 2. Attempt to establish communication with the body control module (BCM) and the powertrain control module (PCM). Does the scan tool communicate with the specified modules? Go to Step 3 Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications 3 1. Access the Class 2 Power Mode parameter in the Diagnostic Circuit Check menu on the scan tool. IMPORTANT: Important: The engine may start during the following step. Turn OFF the engine as soon as you have observed the Crank power mode. IMPORTANT: Insure that all ignition switch positions are observed

2004 Chevrolet Chevy K Silverado – 4WD Evaporative Emission (EVAP) Canister Vent Solenoid Valve Replacement Pickup

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Evaporative Emission (EVAP) Canister Vent Solenoid Valve Replacement Pickup Removal Procedure Important Clean the evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the fittings in order to avoid possible system contamination. 1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. 2. Remove the harness clip from the canister vent solenoid (CVS) line. 3. Disconnect the CVS electrical connector. 2004 Chevrolet Chevy K Silverado – 4WD 4. If the vehicle is equipped with a 6 ft box, disconnect the EVAP CVS line from the canister. 5. Remove the CVS clip from the frame crossmember. 6. Push in the retainer and remove the CVS from the fuel tank clip. 7. If the vehicle is equipped with a 8 ft box, disconnect the EVAP CVS line from the canister. 8. Remove the CVS clip from the frame crossmember. 9. Push in the retainer and remove the CVS from the fuel tank clip. Installation Procedure 1. If the vehicle is equipped with a 8 ft box, install the CVS to the fuel tank until the clip engages. Important On vehicles equipped with a 8 ft box, the CVS line is routed below the frame crossmember. 2. Install the CVS clip to the frame crossmember. 3. Connect the EVAP CVS line to the canister. 4. If the vehicle is equipped with a 6 ft box, install the CVS to the fuel tank until the clip engages. Important On vehicles equipped with a 6 ft box, the CVS line is routed above the frame crossmember. 5. Install the CVS clip to the frame crossmember. 6. Connect the EVAP CVS line to the canister. 7. Connect the CVS electrical connector. 8. Install the harness clip to the canister vent solenoid (CVS) line. 9. Lower the vehicle.

1986 Ford Truck F 150 2WD Pickup Emission Maintenance Warning Module-Service Manual

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EMISSION MAINTENANCE WARNING MODULE SERVICE INFORMATION ^LAMP – “EMISSIONS/CHECK ENGINE” – EMISSION MAINTENANCE WARNING MODULE – SERVICE INFORMATION LIGHT TRUCK: 1985-89 BRONCO 1985-87 BRONCO II 1985-89 ECONOLINE, F- 150, F-250, F-350 1985-88 RANGER 1986-87 AEROSTAR ISSUE: The Emission Maintenance Warning “EMW” module operates a light that is located on the instrument panel. For 1985-87 model year vehicles, the light will display the word “EMISSIONS”. For 1988-89 model year vehicles, the light will display the words “CHECK ENGINE”. When the light is lit, it is indicating that the 60,000 mile emission maintenance should be performed. After the maintenance is performed the EMW module must be reset to zero time. Another type of module is the “IMS” module. This module is not part of the light circuit and does not require maintenance. At a predetermined time, the IMS module directs the EEC IV processor to make a strategy change. A third type of module is the “COMBO” module. This module combines the functions of the IMS and the EMW modules. ACTION: Refer to the following module application charts for the specific vehicle application and location of the different types of modules. NOTE: FOR APPLICATIONS NOT LOSTED IN THE FOLLOWING MODULE APPLICATION CHARTS, THE “CHECK ENGINE” LIGHT IS CONTROLLED BY THE EEC IV PROCESSOR. THESE VEHICLES DO NOT USE THE “EMW” MODULE

1995 Volvo 850 L5-2.3L Turbo Relay Identification and Location

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Relay Identification and Location Relays Inside the Central Electrical Unit 101-102Control module, cruise control (4/3) 103 Fuel pump relay (2/23) 104,108Main headlight relay with bulb malfunction indicator (2/1) 105 Overload relay +X supply (2/30) 106 Overload relay +15 supply (2/31) 107 Overload relay +X supply (2/60) 201 Fog light relay (2/2) 202 Relay, deadlock setting (2/47) 203 Relay, windshield intermittent wiper (2/4) 204 Relay, tailgate intermittent wiper (2/16) 205-206Relay, central lock and delayed inside lighting (2/7) 207 Speed warning (2/51) or exhaust temp. sensor relay (2/15) 208 Relay, heated rear window and door mirrors (2/44) 210-211Relay, anti-theft alarm (2/28) 212 Relay, seat belt reminder/key warning (2/5) 213 Front fog lights, bridge (25/9) 214 Relay, heated rear seat (2/43) If the car is not equipped with a theft alarm, position 210 is bridged and 211 is unconnected. Relays Outside the Central Electrical Unit