4E-23 ABS:
DTC C1063: Solenoid Valve Power Supply Driver Circuit
S7RS0B4504016
Wiring Diagram
DTC Detecting Condition
ABS control module monitors the voltage at the terminal of solenoid circuit constantly with ignition switch turned ON.
Also, immediately after ignition switch is turned ON, perform initial check as follows.
Switch solenoid valve power supply driver (transistor) in the order of OFF → ON and check if voltage changes to Low
→ High. If anything faulty is found in the initial check and when the voltage is low with ignition switch turned ON, this
DTC will be set.
DTC Troubleshooting
[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
6
WHT/BLU
12V
5
E03-14
5V
12V
8
GRN/ORN
E03-7
WHT/BLU
GRN
1
2
3
4
7
I6RS0C450013-01
[A]: ABS hydraulic unit / control module connector
(viewed from terminal side)
5. Solenoid valve power supply driver (transistor)
1. Battery 6. ABS hydraulic unit / control module assembly
2. Main fuse box 7. To solenoid valve
3. Ignition switch 8. ABS power control module
4. Circuit fuse box
Step Action Yes No
1 Was “ABS Check” performed? Go to Step 2. Go to “ABS Check”.
2 Check battery voltage.
Is it about 11 V or higher?
Go to Step 3. Check charging system
referring to “Battery
Inspection in Section
1J” and “Generator Test
(Undercharged Battery
Check) in Section 1J”.
3 Check main fuse for ABS solenoid and its terminal.
Is it in good condition?
Go to Step 4. Replace fuse and check
for short circuit to
ground.
4 1) Turn ignition switch to OFF position.
2) Disconnect ABS hydraulic unit / control module
connector.
3) Check for proper connection to ABS hydraulic unit /
control module at terminal “E03-14”.
4) If OK, then measure voltage between connector terminal
“E03-14” and body ground.
Is it 10 – 14 V?
Substitute a known-
good ABS hydraulic unit
/ control module
assembly and recheck.
“WHT/BLU” circuit
imperfect short to
ground.
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