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(P0600) ENGINE TEMPERATURE MESSAGE (CONTINUED) 2. (P0720) CAN BUS CIRCUIT DTC PRESENT Turn the ignition on. With the DRB III T , read Transmission DTCs. Note: If DTC (P0720) CAN BUS CIRCUIT is present, perform diag- Is DTC (P0720) CAN BUS CIRCUIT present? Yes >> Refer to the Transmission - Electrical Diagnostics category and perform the appropriate symptom. No >> Go To 3 3. CHECK TO SEE IF ENGINE DTCS ARE PRESENT With the ignition on. With the DRB III T , read Engine DTCs. Are any Engine Coolant Temperature Sensor DTCs present? Yes >> Refer to the Engine - Electrical Diagnostics category and perform the appropriate symptom. No >> Go To 4 4. PCM - ENGINE TEMP MESSAGE Turn the ignition off. Replace and program the Powertrain Control Module. (Refer to 8 - CONTROL MODULES/POWERTRAIN CONTROL MODULE - REMOVAL). Turn the ignition on. With the DRB III T , erase Transmission DTCs. Start the engine. With the brakes firmly applied, shift the gear selector into drive. With the DRB III T , read Transmission DTCs. Did DTC (P0600) ENGINE TEMPERATURE MESSAGE set again? Yes >> Replace the Transmission Control Module. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES/ TRANSMISSION CONTROL MODULE - REMOVAL). Perform NAG1 TRANSMISSION VERIFICATION TEST. No >> Test Complete. ZH NAG1 - ELECTRICAL DIAGNOSTICS 21 - 53 |