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• When Monitored: • Set Condition: Possible Causes BOOST PRESSURE SOLENOID BP SOLENOID CONTROL SHORTED TO VOLTAGE ENGINE CONTROL MODULE - INTERNAL SHORT TO VOLTAGE Diagnostic Test 1. CHECK FOR ACTIVE DTC NOTE: If the ECM detects and stores a DTC, the ECM also stores the engine/vehicle operating conditions NOTE: Before erasing stored DTCs, record these conditions. Attempting to duplicate these conditions may With the scan tool, erase ECM DTCs. Test drive the vehicle. Monitor the scan tool for ECM DTCs. Did this DTC set again? Yes >> Go To 2 No >> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) 2. BP SOLENOID CONTROL SHORTED TO VOLTAGE Turn the ignition off. Disconnect the BP Solenoid harness connector. Disconnect the ECM harness connectors. Remove the ASD Relay from the PDC. Connect a jumper wire between cavity 30 and cavity 87 of the ASD Turn the ignition on. Measure the voltage of the BP Solenoid Control circuit. Is the voltage below 1.0 volt? Yes >> Go To 3 No >> Repair the BP Solenoid Control circuit for a short to voltage. Perform the ECM Verification Test Ver. 1 (Refer to 9 - 9 - 698 ENGINE DIESEL DIAG KJ |