PROBLEM SYMPTOMS TABLE
If there are no DTCs output and the problem still occurs, check the circuits for each problem symptom in the order given in the following table and proceed to the relevant troubleshooting page.
NOTICE:
When replacing the brake actuator assembly, sensors, etc., turn the ignition switch off.
HINT:
Symptom |
Suspected Area |
See page |
---|---|---|
ABS, BA and/or EBD does not operate. |
Check for DTCs again and make sure that the normal system code is output. |
|
IG power source circuit |
|
|
Front speed sensor circuit |
|
|
Rear speed sensor circuit |
|
|
Check the brake actuator assembly using the Techstream. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks. |
|
|
If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). |
|
|
ABS, BA and/or EBD does not operate efficiently. |
Check for DTCs again and make sure that the normal system code is output. |
|
Front speed sensor circuit |
|
|
Rear speed sensor circuit |
|
|
Stop light switch circuit |
|
|
Check the brake actuator assembly using the Techstream. (Check brake actuator assembly operation using the Active Test function.) If abnormal, check the hydraulic circuit for leaks. |
|
|
If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). |
|
|
ABS sensor DTC check cannot be done. |
Check for DTCs again and make sure that the normal system code is output. |
|
TC and CG terminal circuit |
|
|
If the symptoms still occur even after the above circuit in suspected areas has been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). |
|
|
ABS warning light abnormal (Remains on). |
ABS warning light circuit |
|
Brake actuator assembly (Skid control ECU) |
|
|
ABS warning light abnormal (Does not come on). |
ABS warning light circuit |
|
Brake actuator assembly (Skid control ECU) |
|
|
Brake warning light abnormal (Remains on). |
Brake warning light circuit |
|
Brake actuator assembly (Skid control ECU) |
|
|
Brake warning light abnormal (Does not come on). |
Brake warning light circuit |
|
Brake actuator assembly (Skid control ECU) |
|
|
VSC and/or TRAC does not operate. |
Check for DTCs again and make sure that the normal system code is output. |
|
IG power source circuit |
|
|
Check the hydraulic circuit for leaks. |
- |
|
Front speed sensor circuit |
|
|
Rear speed sensor circuit |
|
|
Yaw rate and acceleration sensor circuit |
|
|
Steering angle sensor circuit |
|
|
If the symptoms still occur even after the above circuits in suspected areas have been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). |
|
|
VSC sensor DTC check cannot be done. |
Check for DTCs again and make sure that the normal system code is output. |
|
TC and CG terminal circuit |
|
|
If the symptoms still occur even after the above circuit in suspected areas has been inspected and proved to be normal, replace the brake actuator assembly (skid control ECU). |
|
|
TRAC OFF indicator light abnormal (Remains on). |
TRAC OFF indicator light circuit |
|
Brake actuator assembly (Skid control ECU) |
|
|
TRAC OFF indicator light abnormal (Does not come on). |
TRAC OFF indicator light circuit |
|
Brake actuator assembly (Skid control ECU) |
|
|
VSC OFF indicator light abnormal (Remains on). |
VSC OFF indicator light circuit |
|
Brake actuator assembly (Skid control ECU) |
|
|
VSC OFF indicator light abnormal (Does not come on). |
VSC OFF indicator light circuit |
|
Brake actuator assembly (Skid control ECU) |
|
|
Slip indicator light abnormal (Remains on). |
Slip indicator light circuit |
|
Brake actuator assembly (Skid control ECU) |
|
|
Slip indicator light abnormal (Does not come on). |
Slip indicator light circuit |
|
Brake actuator assembly (Skid control ECU) |
|
|
Sensor check cannot be done. |
TS and CG terminal circuit |
|
Brake actuator assembly (Skid control ECU) |
|
|
Meter buzzer abnormal. |
Meter buzzer circuit |
|
Brake actuator assembly (Skid control ECU) |
|
ECM Power Source Circuit
DESCRIPTION
When the ignition switch is turned to ON, the battery voltage is applied to IGSW
of the ECM. The output signal from the MREL terminal of the ECM causes a current
to flow to the coil, closing the contact of the engine room junction block assemb ...
Relay
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT DOME CUT RELAY
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
...
Transfer System
Precaution
PRECAUTION
Prior to starting any work, clean the transfer assembly to prevent sand
or mud deposits from entering the assembly.
When removing any light alloy components such as the transfer cover,
do not pry on the component wi ...