Engine Control Module: Testing and Inspection

CHECK AT THE POWERTRAIN CONTROL MODULE (PCM)

1. Disconnect the PCM connectors B-19, B-20, B- 21, B-22 and B-23, and connect check harness special tool MB991923 between the PCM connectors.
2. Measure the voltage between each check harness connector terminal and check harness connector ground terminal (No. 25 or No. 29).

Check Harness Special Tool MB991923 Connector Terminal Arrangement Part 1:

Check Harness Special Tool MB991923 Connector Terminal Arrangement Part 2:

Check Harness Special Tool MB991923 Connector Terminal Arrangement Part 3:

Check Harness Special Tool MB991923 Connector Terminal Arrangement Part 4:

Check Harness Special Tool MB991923 Connector Terminal Arrangement Part 5:

Check Harness Special Tool MB991923 Connector Terminal Arrangement Part 6:

Check Harness Special Tool MB991923 Connector Terminal Arrangement Part 7:

TERMINAL VOLTAGE CHECK CHART

PCM Harness Side Connector Terminal Arrangement Part 1:

PCM Harness Side Connector Terminal Arrangement Part 2:

TERMINAL RESISTANCE AND CONTINUITY CHECK