Diagnostic Test

Turn the ignition on.

With the scan tool, clear all DTC's.

Turn the Right Turn Signal on.

With the scan tool, read DTC's.

Does the scan tool display active: B1640-FRONT RIGHT TURN LAMP CONTROL CIRCUIT HIGH? 

Yes 

1. Go to  2).

No 

1. The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
2. Perform BODY VERIFICATION TEST - VER 1 .

Turn the ignition off.

Disconnect the Front Right Turn Signal Lamp assembly harness connector.

With a 12-volt test light connected to 12-volts, probe each (Z904) Ground circuit.

Does the test light illuminate brightly on each ground circuit? 

Yes 

1. Go to  4).

No 

1. Go to  3).

Measure the resistance of the appropriate (Z904) Ground circuit(s) at the Front Right Turn Signal Lamp assembly harness connector.

Is the resistance below 10.0 ohms? 

Yes 

1. Replace the Inoperative bulb in accordance with the Service Information.
2. Perform BODY VERIFICATION TEST - VER 1 .

No 

1. Repair the appropriate (Z904) Ground circuit(s) for an open.
2. Perform BODY VERIFICATION TEST - VER 1 .

Turn the ignition on.

With the Right Turn Signal still on and a 12-volt test light connected to ground, check the (L60) Front Right Turn Signal Control circuit.

Does the test light blink brightly from on to off with the turn signal indicator? 

Yes 

1. Replace the Inoperative bulb in accordance with the Service Information.
2. Perform BODY VERIFICATION TEST - VER 1 .

No 

1. Go to  5).

Turn the ignition off.

Disconnect the TIPM C3 harness connector.

Measure the resistance of the (L60) Front Right Turn Signal Control circuit between the Front Right Turn Signal Lamp assembly harness connector and the TIPM C3 harness connector.

Is the resistance below 10.0 ohms? 

Yes 

1. Go to  6).

No 

1. Repair the (L60) Front Right Turn Signal Control circuit for an open.
2. Perform BODY VERIFICATION TEST - VER 1 .

Turn the ignition on.

Measure for voltage on the (L60) Front Right Turn Signal Control circuit.

Is there any voltage present? 

No 

1. Repair the (L60) Front Right Turn Signal Control circuit for a short to voltage.
2. Perform BODY VERIFICATION TEST - VER 1 .

Yes 

1. Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
2. Perform BODY VERIFICATION TEST - VER 1 .