4E
“ABS” Warning Lamp Does Not Come ON at Ignition Switch ON
Wiring Diagram
[A]: For M/T model 2. Main fuse 6. ABS warning lamp
[B]: For A/T model 3. Ignition switch 7. Lamp driver module
[C]: ABS hydraulic unit / control module connector E142 (viewed form terminal side) 4. Circuit fuse 8. ABS hydraulic unit / control module assembly
1. Battery 5. Combination meter      
Circuit Description
Operation (ON/OFF) of “ABS” warning lamp is controlled by ABS control module and lamp driver module.
If the Antilock brake system is in good condition, the ABS control module turns the “ABS” warning lamp ON at the ignition switch ON, keeps it ON for 2 seconds and then turns it OFF. If an abnormality in the system is detected, the lamp is turned ON by ABS control module. Also, it is turned ON by lamp driver module when the connector of ABS control module is disconnected.
Troubleshooting
Step Action YES NO
1
1) Turn ignition switch to ON position.
Do other warning lamps come ON?
Go to Step 2.
Go to Step 4.
2
1) Turn ignition switch to OFF position.
2) Disconnect ABS hydraulic unit / control module connector.
Does “ABS” warning lamp light with ignition switch ON?
Replace ABS hydraulic unit / control module assembly.
Go to Step 3.
3
1) Remove combination meter with ignition switch turned OFF.
2) Measure resistance between “RED/BLU” wire of combination meter connector and ground.
Is it infinite (∞)?
Go to Step 6.
“RED/BLU” wire circuit shorted to ground.
4
Is circuit fuse for combination meter in good condition?
Go to Step 5.
Replace fuse and check for short circuit to ground.
5
1) Remove combination meter with ignition switch turned OFF.
2) Check for proper connection to “BLK/RED” wire of combination meter connector.
3) If OK, turn ignition switch to ON and measure voltage between “BLK/RED” wire of combination meter connector and vehicle body ground.
Is it 10 – 14 V?
Go to Step 6.
“BLK / RED” wire circuit open.
6
1) Measure resistance between “BLK/ORN” wire of combination meter connector and valve body ground.
Is continuity indicated?
Replace combination meter.
“BLK/ORN” wire circuit open or high resistance.