G1 - Check for Idle Air DTCs: Initiate KOER Self-Test

Continuous Memory Diagnostic Trouble Code (DTC) 121 indicates Throttle Position (TP) was inconsistent with Mass Air Flow (MAF) value.

Continuous Memory DTC 124 indicates TP value was higher than expected.

Continuous Memory DTC 125 indicates TP value was lower than expected.

- Key "ON".

- Initiate Key On Engine Running (KOER) Self-Test.

- Are DTCs 411 or 412 present?

Yes -- Return to Diagnostic Routines for appropriate Pinpoint Test.

No -- Go to G2.