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Home >> Chevrolet >> 2002 >> Tracker 2D Utility, RWD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 2.0L >> Diagnostic Tests >> DTC P1500: Start Switch Circuit >> Diagnostic Procedures

Diagnostic Procedures

  1. Perform diagnostic system check - engine controls. See DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS  under SELF-DIAGNOSTIC SYSTEM. After performing diagnostic system check - engine controls, go to next step.
  2. Turn ON the ignition, leaving the engine OFF. Perform the scan tool Clear DTC Information function. Start the engine. Run the engine for 3 minutes or more. If the MIL is not illuminated, turn OFF the engine and repeat the prior two steps. Is DTC P1500 set? If yes, go to next step. If no, see DIAGNOSTIC AIDS  .
  3. Turn OFF ignition. Disconnect PCM electrical connectors. Turn ON ignition, leaving engine OFF. Place the gear selector in Park or Neutral. Measure start signal circuit voltage with a Digital Multimeter (DMM). Crank engine. If necessary depress clutch pedal fully while cranking. Measure start signal circuit voltage with a DMM while cranking engine. Does the voltage equal 0 volts with ignition ON and within 6-12 volts range while cranking engine? If yes, go to step  5 . If no, go to next step.
  4. Repair the open or the short in the crank signal circuit between the PCM and the CPP switch. After repairs, go to step  7 .
  5. Check for faulty electrical connections at the PCM. Repair as necessary. Was a repair necessary? If yes, go to step  7 . If no, go to next step.
  6. Replace PCM. Perform PCM relearn procedure. See POWERTRAIN CONTROL MODULE  under PROGRAMMING. After replacing PCM, go to next step.
  7. Turn OFF ignition. Remove DOME fuse for 30 seconds. Install the DOME fuse. Reset the radio clock time. Start the engine. Operate the vehicle within the Conditions for Running the DTC or until the DTC P1500 diagnostic test has run. Does the DTC run and pass? If yes, go to next step. If no, go to step  2 .
  8. Using scan tool, observe stored information and Capture Info. Does the scan tool display any DTCs that you have not diagnosed? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS  . If no, system is okay.
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