Pinout Values and Diagnostic Parameters

CHECK AT THE ENGINE CONTROL MODULE (ECM)

1. Disconnect the ECM connectors B-108 and B-109, and connect check harness special tool MB992110 between the ECM connectors.
2. Measure the voltage between each check harness connector terminal and check harness connector ground terminal (No. 81 or No. 93).

TERMINAL VOLTAGE CHECK CHART

NOTE:
- *1: The average voltage through an analog voltmeter is described in this service manual (because the average voltage would be not constantly shown on a digital voltmeter).
- *2: Vehicles for Canada, the headlight, taillight, etc. remain lit even when the lighting switch is in "OFF" position but this is no problem for checks.






















TERMINAL RESISTANCE AND CONTINUITY CHECK