Diagnostic Test

1) TEST FOR INTERMITTENT CONDITION
Turn the ignition on.

Clear all TIPM DTC's.

Turn the Right Turn Signal on.

With the scan tool, read DTC's.

Does the scan tool read: B1640-FRONT RIGHT TURN CONTROL CIRCUIT HIGH?

Yes
1. Go to Step 2.
No
1. The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
2. Perform the BODY VERIFICATION TEST - VER 1 .
2) FRONT RIGHT TURN SIGNAL BULB
Turn the ignition off.

Inspect the Front Right Turn Signal Bulb Assembly.

Is the inoperative bulb OK?

Yes
1. Go to Step 3.
No
1. Replace the Inoperative bulb in accordance with the service information.
2. Perform the BODY VERIFICATION TEST - VER 1 .
3) (L60) RIGHT TURN SIGNAL CONTROL CIRCUIT OPEN

Fig 1: Measuring Front Right Turn Signal Control Circuit Resistance
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the TIPM C4 connector.

Disconnect the Front Right Turn Signal harness connector.

Measure the resistance of the (L60) Front Right Turn Signal Control circuit.

Is the resistance above 5.0 ohms?

Yes
1. Repair the (L60) Turn Signal Control circuit for an open.
2. Perform the BODY VERIFICATION TEST - VER 1 .
No
1. Go to Step 4.
4) (L60) RIGHT TURN SIGNAL CONTROL CIRCUIT SHORT TO VOLTAGE

Fig 2: Measuring Front Right Turn Signal Control Circuit Voltage
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the TIPM C4 connector.

Disconnect the Front Right Turn Signal harness connector.

Turn the ignition on.

Measure for voltage on the (L60) Front Right Turn Signal Control circuit.

Is the voltage above 10.0 volts?

Yes
1. Repair the (L60) Turn Signal Control circuit for a short to voltage.
2. Perform the BODY VERIFICATION TEST - VER 1 .
No
1. Replace the Totally Integrated Power Module.
2. Perform the BODY VERIFICATION TEST - VER 1 .