P0381

P0381-WAIT TO START LAMP INOPERATIVE

For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

- When Monitored:
Ignition on.

- Set Condition:
The cluster sends a signal to the Engine Control Module (ECM) that it has detected a failed wait to start lamp.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.

1. WAIT-TO-START LAMP DOES NOT COME ON
1. Turn the ignition off.
2. While watching the Wait-To-Start lamp, turn the ignition key on.

Did the Wait-To-Start lamp light?

Yes

- Go To 2

No

- Go To 3

2. WAIT-TO-START LAMP STAYS ON ALL THE TIME
1. Turn the ignition off.
2. While watching the Wait-To-Start lamp, turn the ignition key on.

Does the Wait-To-Start lamp stay on all the time?

Yes

- Go To 3

No

- Wait-To-Start Lamp operating normally. Test passed.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Powertrain Verification Test.

3. FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN




1. Turn the ignition off.
2. Remove the cluster.

NOTE: Check connectors - Clean/repair as necessary.

3. Turn the ignition on.
4. Using a 12-volt test light, check the Fused Ignition Switch Run/Start circuit while the ignition is in the run/start position.

Is the light illuminated and bright?

Yes

- Go To 4

No

- Repair the open fused Ignition Switch Output circuit.
- Perform the POWERTRAIN VERIFICATION TEST - 6.7L. Powertrain Verification Test.

4. WAIT-TO-START LIGHT BULB
1. Remove and inspect the Wait-to-Start Bulb.

Is the Bulb Ok?

Yes

- Test complete.

No

- Replace the Wait-to-Start Bulb.
- Perform POWERTRAIN VERIFICATION TEST VER - 6.7L. Powertrain Verification Test.