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Home >> Pontiac >> 2008 >> Torrent GXP, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 91 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> Starter Solenoid Does Not Click >> Circuit/System Testing >> PNP Switch Circuit Malfunction - 6T70 (MH2/MH4)

PNP Switch Circuit Malfunction - 6T70 (MH2/MH4)

WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect the range selector lever cable for proper adjustment. Refer to Range Selector Lever Cable Adjustment .
  2. Ignition OFF, disconnect the inline 20-way harness connector at the transmission.
  3. Ignition ON, test for greater than 5 volts on the park/neutral signal circuit terminal 20.
    • If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
  4. Ignition OFF, remove the control valve body cover. Refer to Control Valve Body Cover Replacement .
  5. Connect the transmission inline 20-way connector, with the cover removed.
  6. Disconnect the internal mode switch connector at the control solenoid valve assembly.
  7. Ignition ON, verify that the scan tool ECM PNP Switch parameter is In Gear.
    • If not the specified value, test the signal circuit for a short to ground. If the circuit tests normal, replace the ECM.
  8. Connect a 3A fused jumper wire between the park/neutral signal terminal F at the control solenoid valve assembly and ground. The scan tool ECM PNP Switch parameter should be Park/Neutral.
    • If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the ECM.
  9. If all circuits test normal, test or replace the internal mode switch.
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