B1634

B1634-LEFT HI BEAM CONTROL CIRCUIT HIGH






For a complete wiring diagram refer to Diagrams/Electrical.

- When Monitored:
- With the Headlamps activated.
- Set Condition:
- When the TIPM detects a HIGH condition.






Diagnostic Test

1. INTERMITTENT CONDITION

Turn the ignition on.

With the Scan Tool, clear all TIPM DTC's.

Turn the High Beam Lamps on.

With the Scan Tool read the DTC information.

Does the Scan Tool read: B1634-LEFT HIGH BEAM CONTROL CIRCUIT HIGH?

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. LEFT HIGH BEAM BULB

Turn the ignition off.

Inspect the Left High Beam Bulb Assembly.

Is the inoperative bulb OK?

Yes

- Go To 3

No

- Replace the Inoperative bulb.
- Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

3. (L33) HIGH BEAM CONTROL CIRCUIT





Turn the ignition off.

Disconnect the Left Headlamp harness connector.

Disconnect the TIPM C7 harness connector.

Measure the resistance of the (L33) Left High Beam Driver circuit.

Is the resistance above 5.0 ohms?

Yes

- Repair the (L33) Left High Beam Driver circuit for an open 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