K-ACT ABS (Equipped Models)
•
Do the 6th 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 K-ACT ABS indicator light (LED) [A] lit, faulty output
fluid pressure sensor (rear brake) in the K-ACT ABS hy-
draulic unit. Replace the K-ACT ABS hydraulic unit.
If the K-ACT ABS indicator light (LED) unlit, K-ACT ABS
is normal (service code is not stored; temporary failure.).
Power Supply Voltage Abnormal (for Fluid
Pressure Sensor) (Service Code 89)
•
Do the 1st step test.
○
Disconnect the fluid pressure sensor connector and con-
nect the harness adapter [A] between these connectors
as shown.
Main Harness [B]
Fluid Pressure Sensor [C]
Input Fluid Pressure Sensor (Front Brake): G [D]
Input Fluid Pressure Sensor (Rear Brake): LG [D]
Output Fluid Pressure Sensor (Rear Brake): Y [D]
Special Tool - Measuring Adapter: 57001-1700
○
Connect the hand tester [E] to the harness adapter leads.
Special Tool - Hand Tester: 57001-1394
Fluid Pressure Sensor Power Supply Voltage
Connections to Adapter:
For Input Fluid Pressure Sensor (Front Brake)
Hand Tester (+) → R (sensor W/R) lead
Hand Tester (–) → BK (sensor BK/R) lead
For Input Fluid Pressure Sensor (Rear Brake)
Hand Tester (+) → R (sensor W/R) lead
Hand Tester (–) → BK (sensor BK/R) lead
For Output Fluid Pressure Sensor (Rear Brake)
Hand Tester (+) → R (sensor W/R) lead
Hand Tester (–) → BK (sensor BK/R) lead
○
Measure the power supply voltage with the engine
stopped and with the connector joined.
○
Turn the ignition switch ON.
Power Supply Voltage
Standard: 4.5 ~ 5.2 V
If the power supply voltage is not within the specification,
proceed the 2nd step.
If the power supply voltage is within the specification, pro-
ceed the 4th step.
BRAKES 12-75
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