Galant L4-2.4L (4G69) (2004)
1. Disconnect ABS-ECU connector A-02.
2. Connect special tool MB991970 (ABS check harness) to the ABS-ECU and the wiring harness, and measure the resistance at special tool
MB991970 (ABS check harness).
3. Turn the ignition switch to the "LOCK" (OFF) position.
CAUTION: Disconnect the negative battery terminal. For details refer to Service Precautions/Vehicle Damage Warnings.
4. Disconnect the negative battery terminal.
5. Measure the resistance between special tool MB991970 (ABS check harness) connector terminal 7 and body ground.
OK: 1 kOhm or more
Q: Does the resistance measure 1 kOhm or more?
YES: If the resistance measures 1 kOhm or more, diagnose CAN bus lines thoroughly by referring to DIAGNOSTIC ITEM 15.
NO: If the resistance measures less than 1 kOhm, replace the ABS-ECU.
Part 1
DIAGNOSTIC ITEM 6: Diagnose shorts in the ground to CAN bus line <Vehicles with ABS and vehicles with multi-center display
(middle-grade type)>
CAUTION: When servicing a CAN bus line, ground yourself by touching a metal object such as an unpainted water pipe. If you fail to do so, a
component connected to the CAN bus line may be damaged.