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P0645-A/C CLUTCH RELAY CIRCUIT (CONTINUED) 3. INTERNAL FUSED IGNITION SWITCH OUTPUT CIRCUIT AND FUSED B+ CIRCUIT Ignition on, engine not running. Using a 12-volt test light connected to ground, probe the Internal Does the test light illuminate brightly? Yes >> Go To 4 No >> Repair the open or short to ground in the Fused Ignition Switch Output circuit or the Fused B+ circuit. Check and Perform the POWERTRAIN VERIFICATION TEST. (Refer 4. (C13) A/C CLUTCH RELAY CONTROL CIRCUIT OPEN Turn the ignition off. Disconnect the C3 PCM harness connector. Measure the resistance of the (C13) A/C Clutch Relay Control circuit from the relay connection to the PCM harness Is the resistance below 5.0 ohms? Yes >> Go To 5 No >> Repair the open in the (C13) A/C Clutch Relay Control circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 5. (C13) A/C CLUTCH RELAY CONTROL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (C13) A/C Clutch Is the resistance below 5.0 ohms? Yes >> Repair the short to ground in the (C13) A/C Relay Clutch Control circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 6 9 - 1918 ENGINE - ELECTRICAL DIAGNOSTICS - SRT-10 DR/DH |