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6. CABIN HEATER RELAY CONTROL CIRCUIT OPEN Turn the ignition off. Remove the Cabin Heater Relay from the PDC. Disconnect the ECM harness connectors. Measure the resistance of the Cabin Heater Relay Control circuit. Is the resistance below 10.0 ohms? Yes >> Replace and program the Engine Control Module in accor- dance with the Service Information. Perform the ECM Verification Test Ver. 1 (Refer to 9 - No >> Repair the Cabin Heater Relay Control circuit for an open. Perform the ECM Verification Test Ver. 1 (Refer to 9 - 9 - 1226 ENGINE DIESEL DIAG KJ |