B1664-REAR FOG LAMP CONTROL CIRCUIT HIGH
For a complete wiring diagram Refer to Section 8W.
Possible Causes
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(L239) REAR FOG LAMP CONTROL CIRCUIT OPEN
|
(L239) REAR FOG LAMP CONTROL CIRCUIT SHORTED TO VOLTAGE
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LEFT AND/OR RIGHT REAR FOG LAMP BULBS
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TOTALLY INTEGRATED POWER MODULE
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Diagnostic Test
1.
INTERMITTENT CONDITION
Turn the ignition on.
With the scan tool, clear all DTC's.
Turn the Rear Fog Lamps on.
With the scan tool, read DTC's.
Does the scan tool display active: B1664-REAR FOG LAMP CONTROL CIRCUIT HIGH?
Yes
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.
LEFT AND RIGHT REAR FOG LAMP BULBS
Turn the ignition off.
Remove the Left and Right Fog Lamp Bulbs.
Inspect the Left and Right Fog Lamp Bulbs.
Are the inoperative bulbs OK?
Yes
No
3.
(L239) REAR FOG LAMP CONTROL CIRCUIT OPEN
Disconnect the TIPM C6 harness connector.
Disconnect the Left and Right Rear Fog Lamp harness connectors.
Measure the resistance of the (L239) Rear Fog Lamp Control circuit between the Left and Right Rear Fog Lamp harness connectors and the TIPM C6 harness connector.
Is the resistance below 10.0 ohms?
Yes
No
4.
(L239) REAR FOG LAMP CONTROL CIRCUIT SHORTED TO VOLTAGE
Turn the ignition on.
Measure for voltage on the (L239) Rear Fog Lamp Control circuit.
Is there any voltage present?
Yes
No