B1644-REAR LEFT TURN CONTROL CIRCUIT HIGH

For a complete wiring diagram Refer to Section 8W.

When Monitored:
Continuously
Set Condition:
When the Front Control Module detects a short to battery on the Control circuit.

Possible Causes

(L63) TURN SIGNAL CONTROL CIRCUIT

POWER DISTRIBUTION CENTER

FRONT CONTROL 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 TURN SIGNAL CONTROL CIRCUIT

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)

4. FRONT CONTROL MODULE

Is there any voltage present?

Yes

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

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