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3. RADIATOR FAN LOW/HIGH CONTROL RELAY SHORTED INTERNALLY With the test light still at the Fused B+ circuits (Radiator Medium/High Fan Relay), remove the Radiator Fan Low/ When the relay is removed, does the test light illuminate brightly? Yes >> Replace the Radiator Fan Low/High Control Relay. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL No >> Repair the open or short to ground in the Fused B+ circuits. Inspect the related fuse and repair as necessary. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL 4. (N112) RADIATOR FAN RELAY CONTROL CIRCUIT Disconnect the TIPM C-11 harness connector. Turn the ignition on, engine not running. With a scan tool, select Radiator Cooling Fan Relay #2 Control State Using a 12–volt test light connected to battery voltage, probe the (N112) Does the test light illuminate and flash on and off? Yes >> Replace the Radiator Fan Medium/High Relay. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) No >> Go To 5 PM ENGINE ELECTRICAL DIAGNOSTICS - DIESEL 9 - 1123 |