|
|
*NO RESPONSE FROM AHBM (SMARTBEAM) (CONTINUED) For a complete wiring diagram Refer to Section 8W. Possible Causes (F921) FUSED RUN RELAY OUTPUT CIRCUIT OPEN OR SHORTED (Z915) GROUND CIRCUIT OPEN (D55) AND (D54) CAN B BUS CIRCUITS OPEN INSIDE REARVIEW MIRROR (CONTROLS SMARTBEAM FUNCTIONS) Diagnostic Test 1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. NOTE: A red X will be next to the module that is not communicating, indicating that the module is not active Does the scan tool display a red X next to the module? Yes >> Go To 2 No >> The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness con- 2. (F921) FUSED RUN RELAY OUTPUT CIRCUIT OPEN OR SHORTED Turn the ignition off. NOTE: Check the FCM and the Cluster for any ignition related Turn the ignition on. Using a 12-volt test light connected to ground, check the (F921) Fused Does the test light illuminate brightly? Yes >> Go To 3 No >> Repair the (F921) Fused Run Relay Output circuit for an open or short. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 8E - 158 ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS WK |