QB2 - Inspect Engine Compartment Wiring For Proper Routing

- Inspect Electronic Engine Controls (EEC) wiring for closeness to ignition components or wires. If EEC wiring is close, reroute as necessary.

- Clear continuous memory Diagnostic Trouble Code (DTC). Clearing Diagnostic Trouble Codes

- Wait five minutes to allow DTC 15/512 to reset.

- Rerun Key On Engine Off Self-Test. Key ON Engine Running (KOER) Self-Test

- Is DTC 15 or 512 still present on retest?

Yes -- Replace Powertrain Control Module (PCM). Remove breakout box. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

No -- Remove breakout box. Reconnect PCM. Service other DTCs as necessary. If none, testing is complete.