LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 875 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> Starter Solenoid Does Not Click >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, verify that the scan tool ECM Ignition 1 Signal parameter displays battery voltage.

    → If less than the specified value, test the Run/Crank relay, ECM-IGN fuse, and the ECM ignition 1 circuits for an open.

  2. Ignition ON, transmission in Park or Neutral. Observe the PNP Switch parameter with a scan tool, in Engine Control Module, Data Display, Engine Data. Verify that the scan tool PNP Switch parameter is Park/Neutral.

    → If the scan tool PNP Switch parameter is not Park/Neutral, refer to Circuit/System Testing: PNP Switch Circuit Malfunction.

  3. Command the Starter Relay ON with the scan tool, or turn the ignition switch to the START position. The starter solenoid should engage and the engine should crank.

    → If the solenoid does not engage, refer to Circuit/System Testing: STRTR Relay Circuit Malfunction.

    → If the solenoid engages but the engine does not crank, refer to Starter Solenoid Clicks, Engine Does Not Crank .

scientia non olet · About LEMON Manuals