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Home >> Saturn >> 2007 >> Relay 3.9 W >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> DTC B153A >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Saturn Outlook. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the liftgate latch assembly.
  2. Ignition OFF, test for less than 1.0 ohm of resistance between the low reference circuit terminal 2 and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the PLGM.
  3. Ignition ON, verify the scan tool Pawl Sw. parameter is INACTIVE.
    • If not the specified value, test the signal circuit terminal 5 for a short to ground. If the circuit tests normal, replace the PLGM.
  4. Ignition ON, verify the scan tool Ratchet Sw. parameter is INACTIVE.
    • If not the specified value, test the signal circuit terminal 6 for a short to ground. If the circuit tests normal, replace the PLGM.
  5. Ignition ON, verify the scan tool Sector Sw. parameter is INACTIVE.
    • If not the specified value, test the signal circuit terminal 4 for a short to ground. If the circuit tests normal, replace the PLGM.
  6. Install a 3A fused jumper wire between the signal circuit terminal 5 and low reference circuit terminal 2. Verify the scan tool Pawl Sw. parameter is ACTIVE.
    • If not the specified value, test the signal circuit terminal 5 for a short to voltage or an open/high resistance. If the circuit tests normal, replace the PLGM.
  7. Install a 3A fused jumper wire between the signal circuit terminal 6 and low reference circuit terminal 2. Verify the scan tool Ratchet Sw. parameter is ACTIVE.
    • If not the specified value, test the signal circuit terminal 6 for a short to voltage or an open/high resistance. If the circuit tests normal, replace the PLGM.
  8. Install a 3A fused jumper wire between the signal circuit terminal 4 and low reference circuit terminal 2. Verify the scan tool Sector Sw. parameter is ACTIVE.
    • If not the specified value, test the signal circuit terminal 4 for a short to voltage or an open/high resistance. If the circuit tests normal, replace the PLGM.
  9. If all circuits test normal, test or replace the liftgate latch assembly.
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