B16F9-FRONT LEFT FOG LAMP CONTROL CIRCUIT HIGH

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

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

Possible Causes
(L89) LEFT FRONT FOG LAMP CONTROL CIRCUIT OPEN
(L89) LEFT FRONT FOG LAMP CONTROL CIRCUIT SHORTED TO VOLTAGE
(Z905) GROUND CIRCUIT OPEN
LEFT FRONT FOG LAMP BULB
TOTALLY INTEGRATED POWER MODULE (TIPM)

1. INTERMITTENT CONDITION

1.	Turn the ignition on.

2.	With the scan tool, clear all DTCs.

3.	Turn the Front Fog Lamps on.

4.	With the scan tool, read DTCs.

Does the scan tool display active DTC B16F9-FRONT LEFT FOG LAMP CONTROL CIRCUIT HIGH?

Yes

Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

2. CHECK THE (Z905) GROUND CIRCUIT

1.	Disconnect the Left Front Fog Lamp harness connector.

2.	With a 12-volt test light connected to 12-volts, check the (Z905) Ground circuit.

Does the test light illuminate brightly?

Yes

3. (Z905) GROUND CIRCUIT OPEN

1.	Turn the ignition off.

2.	Measure the resistance between ground and the (Z905) Ground circuit in the Left Front Fog Lamp harness connector.

Is the resistance below 5.0 Ohms?

Yes

Replace the inoperative bulb in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

4. CHECK (L89) LEFT FRONT FOG LAMP CONTROL CIRCUIT

1.	Turn the ignition on.

2.	With a 12-volt test light connected to ground, check the (L89) Left Front Fog Lamp Control circuit.

Does the test light illuminate brightly with the fog lamp switch turned on, and shut off with the fog lamps turned off?

Yes

Replace the inoperative bulb in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

5. (L89) LEFT FRONT FOG LAMP CONTROL CIRCUIT OPEN

1.	Turn the ignition off.

2.	Disconnect the TIPM C4 harness connector.

3.	Measure the resistance of the (L89) Left Front Fog Lamp Control circuit between the Left Front Fog Lamp harness connector and the TIPM C4 harness connector.

Is the resistance below 5.0 Ohms?

Yes

Repair the open in the (L89) Left Front Fog Lamp Control circuit.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

6. (L89) LEFT FRONT FOG LAMP CONTROL CIRCUIT SHORTED TO VOLTAGE

1.	Turn the ignition on.

2.	Measure the voltage of the (L89) Left Front Fog Lamp Control circuit.

Is there any voltage present?

Yes

Repair the short to voltage in the (L89) Left Front Fog Lamp Control circuit.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

Replace the TIPM in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).