Diagnostic Test

TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all DTCs
3. Turn the Stop Lamps on.
4. With the scan tool, read DTCs.
  Does the scan tool display active: B16B5-RIGHT STOP LAMP CONTROL CIRCUIT HIGH?
  
  Yes
  - Go To 2
  No
  - The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK (Z910) GROUND CIRCUITS
1. Disconnect the Right Rear Tail Lamp harness connector.
2. With a 12-volt test light connected to 12-volts, probe each (Z910) Ground circuit.
  Does the test light illuminate brightly on each ground circuit?
  
  Yes
  - Go To 4
  No
  - Go To 3
(Z910) GROUND CIRCUIT OPEN
1. Measure the resistance of the appropriate (Z910) Ground circuit(s) at the Right Rear Tail Lamp assembly harness connector.
  Is the resistance below 10.0 Ohms?
  
  Yes
  - Replace the Inoperative bulb in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the appropriate (Z910) Ground circuit(s) for an open.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK (L54) RIGHT STOP LAMP CONTROL CIRCUIT
1. Turn the ignition on.
2. With the Stop Lamps still on and a 12-volt test light connected to ground, check the (L54) Right Stop Lamp Control circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Replace the Inoperative bulb in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 5
(L54) RIGHT STOP LAMP CONTROL CIRCUIT OPEN
1. Turn the ignition off.
2. Disconnect the TIPM C7 connector.
3. Measure the resistance of the (L54) Right Stop Lamp Control circuit between the Right Rear Tail Lamp harness connector and the TIPM C7 harness connector.
  Is the resistance below 10.0 Ohms?
  
  No
  - Go To 6
  Yes
  - Repair the (L54) Right Stop Lamp Control circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
(L54) RIGHT STOP LAMP CONTROL CIRCUIT SHORTED TO VOLTAGE
1. Turn the ignition on.
2. Measure the voltage between (L54) Right Stop Lamp Control circuit and ground.
  Is there any voltage present?
  
  Yes
  - Repair the (L54) Right Stop Lamp Control circuit for a short to voltage.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .