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HOMESERVICE MANUALSCHEVROLET1999CUTAWAY 7.4 JREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSANTI-THEFT SYSTEMSYSTEM TESTSTEST A: ENGINE CRANKS BUT DOES NOT STARTTESTING PROCEDURE
1999 Chevrolet Cutaway 7.4 J

Testing Procedure

1999 Chevrolet Cutaway 7.4 JSECTION Testing Procedure
  1. If the VTD Diagnostic System Check was performed, go to the next step. If not, go to DIAGNOSTIC SYSTEM OPERATION CHECK - ANTI-THEFT (DOMESTIC)  under TROUBLE SHOOTING.
  2. Set the parking brake. Rotate the ignition switch from OFF to CRANK to the ON position. Use a Digital Multimeter (DMM) in order to measure the voltage (4.9-5.0 volts) from the Passlock™ module connector terminal B7 to ground. See Figure. This step determines if the Passlock™ data terminal has an open condition or a short to battery. If the voltage is within the specified range, go to the next step. If the voltage is not within the specified range, go to  7.
  3. Use a DMM in order to measure the voltage (9-16 volts) from the Passlock™ module connector terminal A5 to ground. This step determines if the Passlock™ sensor power is available at the Passlock™ module. If CKT 812 is shorted to ground, DTC B2947 will set. Diagnosing and repairing DTC B2947 may eliminate the engine cranking but not starting condition. If the voltage is within the specified range, go to the next step. If the voltage is not within the specified range, go to DTC B2947: SECURITY SYSTEM SENSOR POWER CKT LOW .
  4. Use a DMM in order to measure the voltage (9-16 volts) between the Passlock™ module connector terminal A5 and terminal B5. This step tests the Passlock™ sensor ground. If the voltage is within the specified range, go to the next step. If the voltage is not within the specified range, go to step  8.
  5. Turn the ignition switch OFF. Disconnect the Passlock™ module connector. See ANTI-THEFT MODULE  under REMOVAL & INSTALLATION. Disconnect connector C200 at the base of the steering column. Use a DMM in order to test for resistance (0-5 ohms) between the following connectors:
    • Connector C200 terminal B1 and the Passlock™ module connector terminal A5. See Figure.
    • Connector C200 terminal D3 and the Passlock™ module connector terminal B7
    • Connector C200 terminal C4 and the Passlock™ module connector terminal B5
    This step tests for an open in any of the Passlock™ sensor liner. If the resistance is within the specified range on all 3 circuits, go to the next step. If the resistance is not within the specified range on all 3 circuits, go to step  11.
  6. Ensure the Passlock™ sensor composite tip (3/10 x 4/10 inch) is mounted flush in the center of the lock cylinder housing closest to the steering wheel. Ensure the magnet at the center of the lock cylinder outer edge (1/10 x 3/10) inch is tightly fitted and supported by a composite piece on the side. Ensure that lock cylinder magnet is not demagnetized and is capable of pulling a pocket screwdriver placed on a bench from a minimum distance of 1/10 inch, if not replace ignition lock cylinder (and magnet) assembly. See REMOVAL & INSTALLATION in STEERING COLUMNS - TRUCKS - EXCEPT TRACKER article.

    If all the above are OK, replace the Passlock™ sensor in the electronic column lock module assembly on models with tilt wheels and standard wheels. See REMOVAL & INSTALLATION in STEERING COLUMNS - TRUCKS - EXCEPT TRACKER article. If the repairs are complete, go to step  12.

  7. Turn the ignition switch OFF. Disconnect the Passlock™ module connector. See ANTI-THEFT MODULE  under REMOVAL & INSTALLATION. Turn the ignition switch ON. Use a DMM in order to test for voltage (1.0 volt) from the Passlock™ module connector terminal B7 to ground. This step tests for a short to battery on the Passlock™ sensor signal line. If the voltage is above the specified value, go to step  9. If the voltage is not above the specified value, go to the next step.
  8. Turn the ignition switch OFF. Replace the Passlock™ module. See ANTI-THEFT MODULE  under REMOVAL & INSTALLATION. If the repair is complete, go to step  12.
  9. Disconnect the C200 connector at the base of the steering column. Use a DMM in order to test for voltage (1.0 volt) from the Passlock™ module connector terminal B7 to ground. This step isolates the problem between the Passlock™ sensor and CKT 1836. If the voltage is above the specified value, go to the next step. If the voltage is not above the specified voltage, go to step  6.
  10. Repair the short to battery in CKT 1836. If the repair is complete, go to DIAGNOSTIC SYSTEM OPERATION CHECK - ANTI-THEFT (DOMESTIC)  under TROUBLE SHOOTING.
  11. Repair the open in the appropriate circuit: CKT 812, CKT 1836 or CKT 1057. If the repair is complete, go to DIAGNOSTIC SYSTEM OPERATION CHECK - ANTI-THEFT (DOMESTIC)  under TROUBLE SHOOTING.
  12. Reconnect all the previously disconnected connectors and the components. Turn the ignition switch ON. Connect the scan tool. Clear the DTCs. Perform one of the following Passlock™ reprogramming procedures: If the repair is complete, go to DIAGNOSTIC SYSTEM OPERATION CHECK - ANTI-THEFT (DOMESTIC)  under TROUBLE SHOOTING.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.