P0512

DTC P0512

CIRCUIT DESCRIPTION
The powertrain control module (PCM) receives 2 ignition inputs from the ignition switch, IGN 0 and IGN 1. The PCM receives the crank request input with the ignition switch in the START position. The PCM uses a class 2 ignition mode message, and the voltage input from 2 separate systems to test the crank request circuit. If the PCM detects an improper input, DTC P0512 will set.

DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC P0512 Start Switch Circuit

CONDITIONS FOR RUNNING THE DTC
No class 2 serial data circuit problem.

CONDITIONS FOR SETTING THE DTC
The PCM detects an improper crank request input.

ACTION TAKEN WHEN THE DTC SETS
- The PCM will not illuminate the malfunction indicator lamp (MIL).
- The PCM will store conditions which were present when the DTC set as Failure Records information only.

CONDITIONS FOR CLEARING THE MIL/DTC
- The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
- The DTC can be cleared by using the scan tool Clear DTC Information function.

TEST

Steps 1-9:

Steps 10-12: