Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. 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 DTC's.
3. Turn the High Beam Headlamps on.
4. With the scan tool, read DTC's.
  Does the scan tool display DTC: B1638-RIGHT HI BEAM 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 (L34) RIGHT HIGH BEAM DRIVER CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS

Fig 1: Checking Right High Beam Driver Circuit For A Short To Voltage In The Harness
Courtesy of CHRYSLER GROUP, LLC
1. Turn the Headlamps off.
2. Turn the ignition off.
3. Disconnect the Right Headlamp Lamp harness connector.
4. Disconnect the TIPM C3 harness connector.
5. Turn the ignition on.
6. Measure the voltage between ground and the (L34) Right High Beam Driver circuit.
  Is there any voltage present?
  
  Yes
  - Repair the short to voltage in the (L34) Right High Beam 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
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Reconnect the TIPM C3 harness connector.
3. Connect a 12-volt test light between the (L34) Right High Beam Driver circuit and (L910) Right Headlamp Return Signal circuit in the Right Headlamp Lamp harness connector.
4. Turn the ignition on.
5. Turn the High Beam Headlamps on.
  Does the test light illuminate brightly?
  
  Yes
  - Replace the Right High Beam 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 (L34) RIGHT HIGH BEAM DRIVER CIRCUIT FOR AN OPEN IN THE HARNESS

Fig 3: Checking Right High Beam Driver Circuit For An Open In The Harness
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the TIPM C3 harness connector.
3. Measure the resistance of the (L34) Right High Beam Driver circuit between the Right Headlamp Lamp harness connector and the TIPM C3 harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go To 5.
  No
  - Repair the open in the (L34) Right High Beam Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (L910) RIGHT HEADLAMP RETURN SIGNAL CIRCUIT FOR AN OPEN IN THE HARNESS

Fig 4: Checking Right Headlamp Return Signal Circuit For An Open In The Harness
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (L910) Right Headlamp Return Signal circuit between the Right Headlamp Lamp harness connector and the TIPM C3 harness connector.
  Is the resistance below 5.0 Ohms?
  
  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 (L910) Right Headlamp Return Signal circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .