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Diagnostic Aids

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  1. 1) DTC 0603: Check KAPWR To PCM

    Turn ignition off. Disconnect PCM 104-pin connector, and inspect for damaged pins, corrosion and loose wires. Repair as necessary. Install Breakout Box (014-00950), leaving PCM disconnected. Connect a DVOM between test pins No. 55 and 76 at breakout box. While observing DVOM, wiggle and bend small sections of wiring harness starting at PCM and working toward instrument panel. If DVOM reading indicates less than 10.5 volts at anytime, isolate fault and repair as necessary. Clear DTCs, and repeat QUICK TEST . If reading does not indicate less than 10.5 volts at anytime, go to next step.

  2. 2) Confirm DTC 0603

    Clear DTCs. Wait 10 minutes to allow DTC to reset. Repeat KOEO SELF-TEST . If DTC 0603 is still present, replace PCM. Clear DTCs, and repeat QUICK TEST . If DTC 0603 is not present, no problem is indicated at this time.
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