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  • P1389 No ASD Relay Output Voltage At PCM

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    Mopar1973Man

    DTC P1389: NO ASD RELAY OUTPUT VOLTAGE AT PCM

    1. Turn ignition on with engine off. Using scan tool, check for DTCs. If DTC SPECIFIC GOOD TRIP counter is not displayed and equal to zero, go to next step. If DTC SPECIFIC GOOD TRIP counter is displayed and equal to zero, go to step 4 .

    2. Ensure ignition is on with engine off. Using scan tool, check for DTCs. Check that displayed DTC matches the FREEZE FRAME DTC. If DTCs displayed are the same, go to next step. If DTCs displayed are not the same, perform procedures for FREEZE FRAME DTC.

    3. Using scan tool, check for DTCs and record FREEZE FRAME data. Try to duplicate conditions recorded in FREEZE FRAME data. Using scan tool, check for DTCs. If DTC SPECIFIC GOOD TRIP counter changes to zero, go to next step. If DTC SPECIFIC GOOD TRIP counter does not change to zero, go to step 7 .

    4. Turn ignition off. Remove ASD relay from power distribution center. See Fig. 54 . Power distribution center is located at driver's side front corner of engine compartment. Note cavities in power distribution center for ASD relay. See Fig. 54 . Using voltmeter, check voltage at cavity No. 30 (Red/Light Blue wire) in power distribution center for ASD relay. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open between battery, fuse No. 6 (30-amp) and Red/Light Blue wire between fuse No. 6 in power distribution center and cavity No. 30 in power distribution center for ASD relay. Perform TEST VER-2A .

    5. Ensure ignition is off and ASD relay is still removed from power distribution center. Disconnect PCM connectors. PCM is located at passenger's side rear corner of engine compartment. Using ohmmeter, check resistance between cavity No. 87 (Dark Green/Orange wire) in power distribution center for ASD relay and terminal No. 12 (Dark Green/Orange wire) on PCM connector C3. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open on Dark Green/Orange wire between PCM and cavity No. 87 in power distribution center for ASD relay. Perform TEST VER-2A .

    6. Ensure ignition is off. Install a substitute ASD relay. Using scan tool, clear DTCs. Start engine and allow engine to idle. Using scan tool, check for DTCs. If DTC P1389: NO ASD RELAY OUTPUT VOLTAGE AT PCM exists, replace PCM. Perform TEST VER-2A . If DTC P1389: NO ASD RELAY OUTPUT VOLTAGE AT PCM does not exist, replace original ASD relay. Perform TEST VER-2A .

    7. Using scan tool, clear DTCs. Start engine and allow engine to idle. Wiggle wiring harness and connectors between ASD relay and PCM. The ASD relay is located in power distribution center at driver's side front corner of engine compartment. See Fig. 54 . PCM is located at passenger's side rear corner of engine compartment. Using scan tool, check for DTCs. If DTC P1389: NO ASD RELAY OUTPUT VOLTAGE AT PCM does not exist, go to next step. If DTC P1389: NO ASD RELAY OUTPUT VOLTAGE AT PCM exists, repair wiring harness or connectors between ASD relay and PCM that caused DTC. Perform TEST VER-2A .

    8. Shut engine off. At this time, conditions required for DTC to be stored are not present. Inspect wiring harness and connectors between ASD relay and PCM. If no problems exist, go to next step. If any problems exist, repair wiring or connectors as necessary. Perform TEST VER-2A .

    9. Problem is intermittent. Inspect PCM connectors for corroded, pushed out or damaged terminals. Inspect wiring harness and connectors between ASD relay and PCM for chafed, pierced or partially broken wires. If terminals are not corroded, pushed out or damaged and wiring is okay, check for Technical Service Bulletins (TSBs) that may apply. If terminals are corroded, pushed out or damaged, or wiring is damaged, repair as necessary. Perform TEST VER-2A .



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