Code should be P0560 and not as posted.

DTC P0560: SYSTEM VOLTAGE MALFUNCTION

Diagnostic Aids
Check for following possible problems:

• Generator malfunction.
• Faulty battery.
• Open, high resistance, short to ground or intermittent poor contact between IG COIL fuse (10-amp), INJ fuse (10-amp) or ECM B+ fuse (10-amp) and Engine Control Module (ECM).

Procedure

NOTE: Vehicle will not run if IG COIL fuse (10-amp), INJ fuse (10-amp) or ECM B+ fuse (10-amp) is blown. If any of these fuses are blown,
locate and repair short, then replace appropriate fuse before continuing diagnosis.

1. Check battery condition and generator output. If problem does not exist, go to next step. If problem exists, repair as necessary.

NOTE: Using a breakout box will make following tests easier.

2. Turn ignition on. Backprobe and measure voltage between ECM harness connector terminal No. 26 (Pink wire) and ground. See Fig. 7 . Also, backprobe and measure voltage between ECM harness connector terminal No. 54 (Red/Yellow wire) and ground. And backprobe and measure voltage between ECM harness connector terminal No. 58 (Yellow wire) and ground. If battery voltage exists at each terminal, go to next step. If battery voltage does not exist at a terminal, repair open in appropriate wire.

3. Drive vehicle while monitoring voltage at ECM harness connector terminals No. 26, 54 and 58. If voltage stays stable at battery voltage at each terminal, check connectors for loose, damaged or corroded terminals. If problem exists, repair as necessary appropriate connector. If voltage is unstable at a terminal, locate intermittent poor contact and repair as necessary. If voltage is unstable at ECM harness connector terminal No. 54, also check EGI main relay control circuit connections and wiring for intermittent poor contact. Repair as necessary.

Answered by KHLow2008 (expert)
40,332 answers provided

Thanks! Great information very helpful

Response from jpeete
2 questions asked

You're welcome.

Have a nice day.

Answered by KHLow2008 (expert)
40,332 answers provided