B1644-REAR LEFT TURN CONTROL CIRCUIT HIGH

For a complete wiring diagram Refer to Section 8W.

When Monitored:
Continuously
Set Condition:
When the Totally Integrated Power Module detects a short to battery on the Left Rear Turn Signal Control circuit.

Possible Causes

(L63) LEFT REAR TURN SIGNAL CONTROL CIRCUIT OPEN

(L63) LEFT REAR TURN SIGNAL CONTROL CIRCUIT SHORTED TO VOLTAGE

TOTALLY INTEGRATED POWER MODULE

1.TEST FOR INTERMITTENT CONDITION

Does the scan tool read: B1644-REAR LEFT TURN CONTROL CIRCUIT HIGH?

Yes

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 the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

2.LEFT REAR TURN SIGNAL BULB

Is the inoperative bulb OK?

Yes

Replace the Inoperative bulb in accordance with the service information.
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

3.(L63) LEFT REAR TURN SIGNAL CONTROL CIRCUIT OPEN

Is the resistance above 5.0 ohms?

Yes

Repair the (L63) Turn Signal Control circuit for an open.
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

Is there any voltage present?

Yes

Repair short to voltage on the (L63) Left Rear Turn Signal Control circuit
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

Replace the Totally Integrated Power Module (TIPM) in accordance with the service information.
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)