B1801

B1801-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT LOW - TIPM





For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored:

Continuously

- Set Condition:

When the Driver Door Lock Switch Mux circuit is below 0.8 volts for over 10 seconds.





This test is only applicable for vehicles that do not have "Express Up" Power Windows.

Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION

With the scan tool, record and erase DTC's

Operate the Driver Door Lock Switch in all positions several times.

Cycle the ignition from on to off.

Turn the ignition on.

With the scan tool, read DTC's.

Does the scan tool display B1801-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT LOW?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. DOOR LOCK SWITCH SHORTED





With the scan tool, erase DTC's.

Disconnect the Driver Window/Door Lock Switch C2 connector.

With the scan tool, read DTC's.

Does the scan tool display B1801-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT LOW?

No

- Replace the Driver Window/Door Lock Switch.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

Yes

- Go To 3

3. (G161) DRIVER DOOR LOCK SWITCH MUX CIRCUIT SHORT TO GROUND





Turn the ignition off.

Disconnect the TIPM C7 connector.

Measure the resistance between ground and the (G161) Driver Door Lock Switch Mux circuit.

Is the resistance below 1,000.0 ohms?

Yes

- Repair the (G161) Driver Door Lock Switch Mux circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 4

4. (G161) DRIVER DOOR LOCK SWITCH MUX CIRCUIT SHORT TO THE (P37) DOOR LOCK SWITCH RETURN CIRCUIT





Turn the ignition off.

Disconnect the TIPM C7 connector.

Measure the resistance between the (G161) Driver Door Lock Switch Mux circuit and the (P37) Door Lock Switch Return circuit in the switch C2 connector.

Is the resistance below 1,000.0 ohms?

Yes

- Repair the (G161) Driver Door Lock Switch Mux circuit for a short to the (P37) Door Lock Switch Return circuit.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Replace the Totally Integrated Power Module (TIPM).
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test