DIAGNOSIS SYSTEM
1. DIAGNOSIS
(a) If the skid control ECU detects a malfunction, the ABS and/or BRAKE warning lights and the slip indicator lights come on in accordance with the trouble area to warn the driver.
HINT:
NOTICE:
If parts connected to the IG terminal circuit are damaged due to high voltage, DTCs may not be able to be output from the ABS warning light and slip indicator light by connecting SST to the DLC3. In this case, inspect the IG power source circuit.
2. WARNING LIGHT AND INDICATOR LIGHT CHECK
(a) Release the parking brake.
CAUTION:
When releasing the parking brake, set chocks to hold the vehicle for safety.
HINT:
When the parking brake is applied or the level of the brake fluid is low, the BRAKE warning light comes on.
(b) Check that the ABS warning light, BRAKE warning light and slip indicator light come on when the ignition switch is turned to ON, and go off in approximately 3 seconds.
HINT:
If the indicator remains on or does not come on, proceed to troubleshooting for the light circuit below.
Trouble Area |
See Procedure |
---|---|
ABS warning light circuit (Remains on) |
|
ABS warning light circuit (Does not come on) |
|
BRAKE warning light circuit (Remains on) |
|
BRAKE warning light circuit (Does not come on) |
|
Slip indicator light circuit (Remains on) |
|
Slip indicator light circuit (Does not come on) |
|
No Response from ID BOX (B2789)
DESCRIPTION
This DTC is stored when LIN communication between the certification ECU and ID
code box stops for 10 seconds or more.
DTC Code
DTC Detection Condition
Trouble Area
B2789
No communicat ...
System Diagram
SYSTEM DIAGRAM
Communication Table
Sender
Receiver
Signal
Line
Certification ECU
Main body ECU
Door unlock standby control signal
Door lock/unlock output req ...