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DI-270
DIAGNOSTICS - ABS WITH EBD & BA & TRAC & VSC SYSTEM
DI6BK-03
DTC C1225 / 25 - C1228 / 28 TRAC & VSC Solenoid Circuit
CIRCUIT DESCRIPTION
The TRAC & VSC solenoid operates in accordance with signals from the ECU and raises and lowers the
fluid pressure in the brake cylinders.
DTC No. DTC Detecting Condition Trouble Area
Open or short circuit for SA1 circuit continues for 0.015 sec. S Hydraulic brake booster
C1225 / 25
or more. S SA1 circuit
Open or short circuit for SA2 circuit continues for 0.015 sec. S Hydraulic brake booster
C1226 / 26
or more. S SA2 circuit
Open or short circuit for SA3 circuit continues for 0.015 sec. S Hydraulic brake booster
C1227 / 27
or more. S SA3 circuit
Open or short circuit for STR circuit continues for 0.015 S Hydraulic brake booster
C1228 / 28
sec. or more. S STR circuit
WIRING DIAGRAM
Skid Control ECU
R-B 1
V16 R1+
VSC R/B
ABS SOL Relay
G-B 19
5 R+ SR 5 V16 SR
4 6 Short Hydraulic
Connector Brake Booster
5 5 4 BS 12 2
R-B R-B B-R
5 +BS BS 5 S5 S6 V10 V12 V16 SA1
1 3
SA1
11 3
W-L
B Engine Room R/B V12 V16 SA2
SA2
ABS1 5 4
W-R
2 2 6 6 V12 V16 SA3
2 1 SA3
S5 S6 6
W
V12
STR
Battery Y-G
5
Y-G
V16 STR
F14341
2002 4RUNNER (RM887U)
Author : Date : 446
DI-271
DIAGNOSTICS - ABS WITH EBD & BA & TRAC & VSC SYSTEM
INSPECTION PROCEDURE
1 Check TRAC & VSC solenoid.
LOCK PREPARATION:
Disconnect the 2 connectors (V10, V12) from the hydraulic
brake booster.
6 5 V12
CHECK:
4 V10
Check continuity between terminals V10 - 4 and V12 - 5, 6, 11
and 12 of the hydraulic brake booster.
12 11 OK:
Continuity
F02857 HINT:
Resistance of each solenoid at 20 ◦ Jabse Service Manual Search 2026 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo