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1.Operate the lock lever to disconnect the ASC-ECU harness connector as shown in the figure.
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2.Connect the special tool ASC check harness (MB991997) to measure the voltage between each
check connector terminal and the earth terminal (No. 16 or 47).
Terminal No.
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Check item
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Check condition
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Normal condition
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1
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Motor power supply
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Ignition switch: ON (OFF)
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Approximately battery voltage
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2
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ASC-ECU power supply
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Ignition switch: ON
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Approximately battery voltage
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Ignition switch: OFF
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Approximately battery voltage
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8
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ASC-ECU power supply
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Ignition switch: ON
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Approximately battery voltage
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Ignition switch: OFF
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0V
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22
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G and yaw rate sensor power supply
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Ignition switch: ON
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Approximately battery voltage
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32
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Solenoid valve power supply
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Ignition switch: ON (OFF)
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Approximately battery voltage
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34
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Wheel speed sensor (FR) power supply
|
Ignition switch: ON
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Approximately battery voltage
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36
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Wheel speed sensor (RL) power supply
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Ignition switch: ON
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Approximately battery voltage
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43
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Wheel speed sensor (RR) power supply
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Ignition switch: ON
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Approximately battery voltage
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45
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Wheel speed sensor (FL) power supply
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Ignition switch: ON
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Approximately battery voltage
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1.Operate the lock lever to disconnect the ASC-ECU harness connector as shown in the figure.
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2.When performing the continuity check, turn the ignition switch to LOCK (OFF) position,
connect the special tool ASC check harness (MB991997) as shown in the figure, and disconnect
the ASC-ECU connector.
3.Check the continuity between terminals shown in the chart below.
4.Terminal layout is shown in the figure.
Terminal No.
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Signal
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Normal condition
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16 - body earth
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Earth
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Continuity exists (2Ω or less)
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47 - body earth
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Earth
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