12-54 BRAKES
Anti-Lock Brake System (Equipped Models)
Rear Wheel Rotation Sensor Wiring Inspection
(Service Code 45)
•
Do the 1st step test.
○
Disconnect the ABS hydraulic unit connector and rear
wheel rotation sensor connector.
○
Short the black and brown/black lead terminals of the
main harness side connector [A] with a jumper lead, and
check for continuity between the black and brown/black
lead terminals of the main harness side connector [B].
If there is the continuity in the lead, 2nd step.
If there is not the continuity in the lead, replace or repair
the main harness.
•
Do the 2nd step test.
○
Check for continuity between the black lead terminal of
the sensor connector [A] and ground, and white lead ter-
minal of the sensor connector and ground.
If there is the continuity in the lead, replace the rear wheel
rotation sensor.
If there is not the continuity in the lead, 3rd step.
•
Do the 3rd step test.
○
Recheck the service code indication; erase the service
code, perform the pre-diagnosis inspection 1 and 2, and
retrieve the service code.
If the ABS indicator light (LED) [A] lit, faulty ECU in the
ABS hydraulic unit. Replace the ABS hydraulic unit.
If the ABS indicator light (LED) unlit, ABS system is nor-
mal (service code is not stored; temporary failure.).
Power Supply Voltage Abnormal (Under-Voltage)
(Service Code 52)
•
Do the 1st step test.
○
Disconnect the ignition switch connector and ABS hy-
draulic unit connector.
○
Check for continuity between the brown lead terminal of
the main harness side connector [A] and yellow lead ter-
minal of the main harness side connector [B].
If there is the continuity in the lead, 2nd step.
If there is not the continuity in the lead, inspect the ABS
ECU fuse (10 A) (see Fuse Inspection in the Electrical
System chapter) and replace or repair the main harness.
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