Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. With the scan tool, read LBSS DTCs and record on the repair order.
2. With the scan tool, erase DTCs.
3. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
4. With the scan tool, read LBSS DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - 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 and repair as necessary. If no problems are found, test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(F923) RUN RELAY OUTPUT CIRCUIT OPEN
1. Disconnect the Left Blind Spot Sensor (RBSS) harness connector.
2. Turn the ignition on.
3. With a 12-volt test light connected to ground, back probe the (F923) RUN RELAY OUTPUT circuit at the RBSS harness connector. (Do not back probe sealed connectors.)
  NOTE:
  The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly?
  
  Yes
  - Go To 3
  No
  - Repair the (F923) RUN RELAY OUTPUT circuit for an open or high resistance.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(Z922) GROUND CIRCUIT(S) OPEN
1. Turn the ignition off.
2. With a 12-volt test light connected to 12 volts, check the (Z922) Ground circuit at the RBSS harness connector.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 4
  No
  - Repair the (Z922) Ground circuit(s) for an open or high resistance.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (D264) AND (D265) CAN IHS BUS CIRCUITS FOR AN OPEN
1. Turn the ignition on.
2. Measure the resistance of the (D264) CAN IHS Bus (-) circuit between the Rear CAN IHS Star Connector C4 harness connector and the RBSS harness connector
3. Measure the resistance of the (D265) CAN IHS Bus (+) circuit between the Rear CAN IHS Star Connector C4 harness connector and the RBSS harness connector.
  Is resistance below 3.0 Ohms on both circuits?
  
  Yes
  - Replace the Right Blind Spot Sensor in accordance with the Service Information. Refer to SENSOR, BLIND SPOT, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Repair the (D265) or (D264) CAN IHS Bus circuit for an open. Inspect the connector for damage.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .