NO.3 BRAKE SYSTEM WARNING LIGHT DOES NOT ILLUMINATE WITH IGNITION SWITCH ON [ABS]

id0403a5808700

3
BRAKE system warning light does not illuminate with ignition switch on.
[TROUBLESHOOTING HINTS]
•  Instrument cluster malfunction
•  Communication error between ABS CM and instrument cluster.
•  ABS CM does not operate.

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT FOR DTCS IN ABS CM
•  Connect the M-MDS to DLC-2.
•  Retrieve the ABS CM DTC.
•  Is the DTC U3000:47, U3000:48 or U3000:49 displayed?
Yes
Go to applicable DTC troubleshooting procedure.
(See ON-BOARD DIAGNOSIS [ABS].)
No
Go to the next step.
2
INSPECT FOR DTCS IN INSTRUMENT CLUSTER
•  Retrieve the instrument cluster DTC.
•  Is the DTC displayed?
Yes
Go to applicable DTC troubleshooting procedure.
(See DTC TABLE [INSTRUMENT CLUSTER].)
No
Go to the next step.
3
INSPECT WHETHER MALFUNCTION IS IN ABS CM OR INSTRUMENT CLUSTER
•  Release the parking brake.
•  Turn on all warning light and indicator light using M-MDS simulation function WL+IL?
•  Does the ABS warning light illuminate?
Yes
ABS CM internal malfunctions.
Replace the ABS CM.
(See ABS HU/CM REMOVAL/INSTALLATION [L.H.D.].)
(See ABS HU/CM REMOVAL/INSTALLATION [R.H.D.].)
No
Replace the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)