Anti-Lock Braking System (ABS)
CHECK AT ABS-ECUTERMINAL VOLTAGE CHECK CHART
Required Special Tool:
MB991974: ABS Check Harness
1. Disconnect the ABS-ECU connector A-02, and then use special tool MB991970 to measure the voltages between terminals 1. and each terminal other than terminal (14). Also measure voltages between terminal (14) and each terminal other than terminal 1.
NOTE: Do not measure terminal voltage for approximately three seconds after the ignition switch is turned "ON." The ABS-ECU performs the initial check during that period.
2. The terminal voltage checks specifications are shown.
RESISTANCE AND CONTINUITY BETWEEN HARNESS-SIDE CONNECTOR TERMINALS
Required Special Tool:
MB991974: ABS Check Harness
1. Turn the ignition switch to the "LOCK" (OFF) position and disconnect the ABS-ECU connectors before checking resistance and continuity.
2. Check the resistance and continuity between the terminals indicated in the table.
3. The terminal layout is shown in the illustration.