Mitsubishi 3000GT Service Manual page 879

SERVICE BRAKES - Anti-lock Braking System Troubleshooting
Code No. 16 ABS-ECU power supply system (voltage Probab,e cauSe
abnormally low or high)
Output is provided when ABS-ECU power supply voltage drops below or rises above
Caution
If battery voltage drops or rises while making this check, this code is output as an existing trouble,
making it impossible to perform correct trouble diagnosis. Before carrying out the following check,
be sure to check the battery for conditions and charge it if necessary.
Start engine. Measure voltage
l
between terminal No. 83 and
body ground.
Code Nos. 21,22,23 and 24 Wheel speed sensor system ' Probab,e cauSe
(shorted)
Output is provided in the following case.
wheel speed sensors at a vehicle speed of 10 km/h (6 mph) or more.
Check wheel speed sensor installa-
tion.
Replace ABS-ECU.
if power supply voltage returns to normal
is received by one or more of the four
Check wheel bearing.
TSB Revision
Harness and connector defective
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ABS-ECU defective
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Check harness between ignition
Wheel speed sensor defective
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Harness and connectors defective
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Rotor defective
l
Excessive clearance between sensor and rotor
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ABS-ECU defective
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Wheel bearing defective
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Check harness betweeneach wheel
Replace wheel speed sensor.
Replace rotor.