B1663
B1663-REAR FOG LAMP CONTROL CIRCUIT LOWB1663 - Rear Fog Lamp Control Circuit Low:
WHEN MONITORED
With the Rear Fog Lamps activated.
SET CONDITION
When the TIPM detects a LOW condition.
POSSIBLE CAUSES
- (L239) Rear fog lamp control circuit short to ground
- Totally integrated power module
Diagnostic Test
1. INTERMITTENT CONDITION
Turn the ignition on.
With the Scan Tool, clear all TIPM DTC's.
Turn the Rear Fog Lamps on.
With the Scan Tool read the DTC information.
Q: Does the Scan Tool read: B1663-REAR FOG LAMP CONTROL CIRCUIT LOW?
YES: Go To 2
NO: The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
2. (L239) REAR FOG LAMP CONTROL CIRCUIT SHORT TO GROUND
Turn the ignition off.
Disconnect the TIPM C6 harness connector.
Disconnect the Left and Right Fog Lamp harness connectors.
Measure the resistance between ground and the (L239) Right Low Beam Control circuit.
Q: Is the resistance below 5.0 ohms?
YES: Repair the (L39) Rear Fog Lamp Control circuit for a short to ground condition. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Totally Integrated Power Module (TIPM). Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test