Pinout Values and Diagnostic Parameters

ECM OR PCM TERMINAL VOLTAGE REFERENCE CHART FOR AUTO-CRUISE CONTROL SYSTEM OPERATION

Special Tool-Power Plant ECU Check Harness (MB991923) Connector: Component Side Part 1:

Special Tool-Power Plant ECU Check Harness (MB991923) Connector: Component Side Part 2:

1. Disconnect the ECM or PCM connectors, and connect special tool MB991923 (Power plant ECU check harness) in between.
2. Measure the voltages between the check connector terminals of special tool MB991923 and ground terminals 63 or 76.