Diagnostic Test

Turn the ignition on.

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

Turn the High Beam Headlamps on.

With the scan tool, read the DTC information.

Does the Scan Tool read: B1633-LEFT HI BEAM CONTROL CIRCUIT LOW? 

Yes 

1. Go To  2).

No 

1. 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.
2. Perform the BODY VERIFICATION TEST - VER 1 .

Fig 1: Measuring Resistance Between Ground And Left High Beam Output Circuit

Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the TIPM C5 harness connector.

Disconnect the Left Headlamp harness connector.

Measure the resistance between ground and the Left High Beam Output circuit.

Is the resistance below 5.0 ohms? 

Yes 

1. Repair the (L33) Left High Beam Output circuit for a short to ground condition.
2. Perform the BODY VERIFICATION TEST - VER 1 .

No 

1. Replace the Totally Integrated Power Module (TIPM) in accordance with the service information.
2. Perform the BODY VERIFICATION TEST - VER 1 .