REAR AXLE – Troubleshooting <AYC>
27-14
Code No. 52: Longitudinal acceleration sensor system Probable cause
This code is output when the longitudinal acceleration exceeds a predetermined value
while the vehicle is running with both ABS and brakes being inactive.
D Defective longitudinal acceleration sensor
D Defective harness or connector
D Defective AYC-ECU
NG
Check and repair the harness between
longitudinal acceleration sensor and
AYC-ECU.
OK
Check the trouble symptom.
NG
Replace AYC-ECU.
OK
Check the trouble symptom.
OK
Check the following connector:
B-95
NG
Repair
OK
Measure at B-95 AYC-ECU connector.
D Connector connected
D Ignition switch: ON
D Voltage across 3 and body ground
OK: 2.4 V to 2.6 V (where vehicle
in horizontal position)
NG
Check the following connectors:
B-95, B-52, D-20
Check the acceleration sensor.
(Refer to P.27-52.)
NG
Replace
NG
Repair
Code No. 61: Stop lamp switch system Probable cause
This code is output under either of the following conditions:
D Stop lamp switch remains ON for 15 min. or more.
D There is an open-circuit in the harness between AYC-ECU and stop lamp switch.
D Defective stop lamp switch
D Defective harness or connector
D Defective AYC-ECU
NG
Replace AYC-ECU.
OK
Check the trouble symptom.
OK
Check the following connector:
B-95
NG
Repair
OK
Measure at the B-95 AYC-ECU con-
nector.
D Disconnect the connector and
measure at the harness side.
D Voltage across 11 and body ground
D Brake pedal not depressed.
OK: 1 V or less
NG
Check and repair the harness between
AYC-ECU and stop lamp switch.
Check the stop lamp switch.
NG
Replace
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