4E-13 ABS:
ABS Warning Light Does Not Come ON at Ignition Switch ON
S7RS0B4504008
Wiring Diagram
Circuit Description
Operation (ON/OFF) of ABS warning light is controlled by ABS control module through lamp driver module in
combination meter.
If the antilock brake system is in good condition, ABS control module turns ABS warning light 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, ABS warning light is
turned ON continuously by ABS control module. Also, it is turned ON continuously by lamp driver module when the
connector of ABS control module is disconnected.
Troubleshooting
WHT/BLU
BLK
12V
9
BLK
E03-14
E03-13
E03-26
WHT/RED
GRN/ORN
E03-7
WHT/BLU
GRN
1
2
3
4
8
RED/BLK
7
6
5
10
E03-1
12V
[A]
E03
15
16
17
18
19
20
21
22
23
24
25
2
3
4
5
6
7
8
9
10
11
12
1
13
14
26
BLK/ORN
E03-12
E03-6
RED
WHT
10
G28-8
G28-10
RED
WHT
E46-1
E46-2
RED/BLK
RED/BLK
RED
RED
WHT
WHT
12
13
11
10
G37-2
G37-4
I6RS0C450007-01
[A]: ABS hydraulic unit / control module connector
(viewed from terminal side)
5. Combination meter 10. CAN driver
1. Battery 6. ABS warning light 11. BCM
2. Main fuse box 7. EBD warning light (Brake warning light) 12. Brake fluid level switch
3. Ignition switch 8. Lamp driver module 13. Parking brake switch
4. Circuit fuse box 9. ABS hydraulic unit / control module assembly
Step Action Yes No
1 1) Turn ignition switch to ON position.
Do other warning lights come ON?
Go to Step 2. Go to Step 3.
2 1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch to ON position and check DTC.
Is there DTC U1073?
Go to “DTC U1073:
Control Module
Communication Bus
Off”.
Substitute a known-
good combination meter
and recheck. If ABS
warning light remains
OFF, substitute a
known-good ABS
hydraulic unit / control
module assembly and
recheck.
3 Is Circuit fuse for combination meter in good condition? Go to Step 4. Replace fuse and check
for short circuit to
ground.
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