Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Pickup. However, it is still accessible from the selected car via links, so may be relevant.

INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all DTCs.
3. Turn the Right Turn Signal on.
4. With the scan tool, read DTCs.
  Does the scan tool display DTC: B1640-FRONT RIGHT TURN LAMP CONTROL CIRCUIT HIGH?
  
  Yes
  - Go To 2.
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (L160) RIGHT FRONT TURN SIGNAL DRIVER CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS

Fig 1: Checking Right Front Turn Signal Driver Circuit For A Short To Voltage In The Harness
Courtesy of CHRYSLER LLC
1. Turn the Right Turn Signal off.
2. Turn the ignition off.
3. Disconnect the Right Front Park/Turn Lamp harness connector.
4. Disconnect the TIPM C4 harness connector.
5. Turn the ignition on.
6. Measure the voltage between ground and the (L160) Right Front Turn Signal Driver circuit.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (L160) Right Front Turn Signal Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3.
CHECK THE TIPM FOR CORRECT OPERATION

Fig 2: Checking TIPM For Correct Operation Park And Turn Signal
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Reconnect the TIPM C4 harness connector.
3. Connect a 12-volt test light between the (L160) Right Front Turn Signal Driver circuit and the (Z904) Ground circuit at the Right Front Park/Turn Lamp harness connector.
4. Turn the ignition on.
5. Turn the Right Turn Signal on.
  Does the test light blink on and off?
  
  Yes
  - Replace the Park and Turn Signal Bulb in accordance with the Service Information. Refer to UNIT, Front Lamp , Removal .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4.
CHECK THE (L160) RIGHT FRONT TURN SIGNAL DRIVER CIRCUIT FOR AN OPEN IN THE HARNESS

Fig 3: Checking Right Front Turn Signal Driver Circuit For An Open
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the TIPM C4 harness connector.
3. Measure the resistance of the (L160) Right Front Turn Signal Driver circuit between the Right Front Park/Turn Lamp harness connector and the TIPM C4 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the open in the (L160) Right Front Turn Signal Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (Z904) GROUND CIRCUIT FOR AN OPEN IN THE HARNESS

Fig 4: Checking Ground Circuit For An Open
Courtesy of CHRYSLER LLC
1. Using a 12-volt test light connected to 12-volts, check the (Z904) Ground circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information. Refer to MODULE, Totally Integrated Power (TIPM) , Removal .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Repair the open in the (Z904) Ground circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .