B163C-FRONT LEFT TURN LAMP CONTROL CIRCUIT HIGH

For a complete wiring diagram Refer to Section 8W.

When Monitored:
Continuously.
Set Condition:
When the Totally Integrated Power Module (TIPM) detects a HIGH condition.

Possible Causes

CHECK (Z904) GROUND CIRCUIT

(Z904) GROUND CIRCUIT OPEN

CHECK (L61) FRONT LEFT TURN SIGNAL CONTROL CIRCUIT

(L61) FRONT LEFT TURN SIGNAL CONTROL CIRCUIT OPEN

(L61) FRONT LEFT TURN SIGNAL CONTROL CIRCUIT SHORTED TO VOLTAGE

FRONT LEFT TURN LAMP BULB

TOTALLY INTEGRATED POWER MODULE

Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION

Turn the ignition on.
With the scan tool, clear all DTC's.
Turn the Left Turn Signal on.
With the scan tool, read DTC's.

Does the scan tool display active: B163C-FRONT LEFT TURN LAMP CONTROL CIRCUIT HIGH?

Yes

Go To 2

No

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

2. CHECK (Z904) GROUND CIRCUITS

Turn the ignition off.
Disconnect the Front Left 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

Go To 4

No

Go To 3

3. (Z904) GROUND CIRCUIT OPEN

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

Is the resistance below 10.0 ohms?

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)

No

Repair the appropriate (Z904) Ground circuit(s) for an open.
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

4. CHECK (L61) FRONT LEFT TURN SIGNAL CONTROL CIRCUIT

Turn the ignition on.
With the Left Turn Signal still on and a 12–volt test light connected to ground, check the (L61) Front Left Turn Signal Control circuit.

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

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)

No

Go To 5

5. (L61) FRONT LEFT TURN SIGNAL CONTROL CIRCUIT OPEN

Turn the ignition off.
Disconnect the TIPM C3 harness connector.
Measure the resistance of the (L61) Front Left Turn Signal Control circuit between the Front Left Turn Signal Lamp assembly harness connector and the TIPM C3 harness connector.

Is the resistance below 10.0 ohms?

Yes

Go To 6

No

Repair the (L61) Front Left Turn Lamp Control circuit for an open.
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

6. (L61) FRONT LEFT TURN SIGNAL CONTROL CIRCUIT SHORTED TO VOLTAGE

Turn the ignition on.
Measure for voltage on the (L61) Front Left Turn Signal Control circuit.

Is there any voltage present?

No

Repair the (L61) Front Left Turn Signal Control circuit for a short to voltage.

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

Yes

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)