NOTE: This diagnosis procedure is limited to cases where communication with the MUT-II/III is possible (ABS-ECU power supply is normal) and no diagnosis code outputs.
CIRCUIT OPERATION
Refer to 
.TECHNICAL DESCRIPTION (COMMENT)
Disconnected ABS warning lamp output line of ABS-ECU is suspected.TROUBLESHOOTING HINTS (THE MOST LIKELY CAUSES FOR THIS CONDITION:)
- Damaged wiring harness or connector
- Malfunction of the hydraulic unit (integrated with ABS-ECU)
- Malfunction of the combination meter
DIAGNOSIS
STEP 1. Check the ABS warning lamp circuit at ABS-ECU connector B-03.
- Disconnect ABS-ECU connector B-03.
- Connect ABS-ECU connector B-03 terminal number 12 to earth.
- Turn the ignition switch to the "ON" position.
Q: Does the ABS warning lamp go off?
YES:
To check and reproduce the state of malfunction replace the hydraulic unit (integrated with ABS-ECU). Then go to Step 3
. If the malfunction is not reproduced, an intermittent malfunction is suspected.NO: Go to Step 2
.STEP 2. Check the harness wire between the combination meter connector C-05 terminal 18 and ABS-ECU connector B-03 terminal 12.
NOTE: After inspecting combination meter connector C-105, inspect the wire. If combination meter connector C-105 is damaged, repair or replace it. Then go to Step 3.
.Q: Is the harness wire between combination meter connector C-05 terminal 18 and ABS-ECU connector B-03 terminal 12 damaged?
YES:
Replace the combination meter (printed circuit board) and then go to Step 3.NO: Repair the harness wire and then go to Step 3
.