DI±922
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
111 6 Author: Date:
2005 SEQUOIA (RM1146U)
*1: As long as the following operations are not performed, the ABS warning light will not go OFF only by re-
pairing the trouble area.
(1) Drive the vehicle at 12 mph (20 km/h) for 30 seconds or more and check that the ABS warning light goes
off.
(2) Clear the DTC (See page DI±911).
HINT:
There is a possibility that the hand±held tester cannot be used when the ABS warning light is always ON.
DTC chart of VSC system:
DTC No.
(See Page)Detection ItemTrouble Area
C1201/51
(DI±936)Engine control system malfunctionEngine control system
C1202/52
(DI±937)Brake fluid level warning switch circuit
Brake fluid level
Brake fluid level warning switch
Brake fluid level warning switch circuit
Skid control ECU
CAN1 communication system
Translate ECU
C1203/53 *1
(DI±942)Malfunction in CAN1 communication
Skid control ECU
CAN1 communication system
ECM
Translate ECU
C1207/37
(DI±522)Reverse gear signal failureECT
C1223/43
(DI±945)Malfunction in ABS control systemABS control system
C1231/31
(DI±946)Malfunction in steering angle sensor
Steering angle sensor
Steering angle sensor communication circuit
Skid control ECU
Translate ECU
CAN communication system
C1232/32
(DI±951)Malfunction in deceleration sensorYaw rate (deceleration) sensor
Yaw rate (deceleration) sensor circuit
C1234/34
(DI±954)Malfunction in yaw rate sensorYaw rate (deceleration) sensor
Yaw rate (deceleration) sensor circuit
C1310/11
(DI±969)Open or short circuit in active brake booster solenoid circuitBrake booster
Active brake booster solenoid circuit
C1311/12
(DI±971)Open or short circuit in brake inhibit relay circuitBrake inhibit relay
Brake inhibit relay circuit
1335/35
(DI±946)Malfunction in steering angle sensor communication circuit
Steering angle sensor
Steering angle sensor communication circuit
Skid control ECU
Translate ECU
CAN1 communication system
C1340/47*2
(DI±977)Center diff. lock circuit malfunction
Center diff. lock position switch
Center diff. lock position switch circuit
Center diff. lock indicator light circuit
Translate ECU
C1360/61
(DI±983)Malfunction in master cylinder pressure sensorMaster cylinder pressure sensor
Master cylinder pressure sensor circuit
DI±946
± DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1140 Author: Date:
2005 SEQUOIA (RM1146U)
DTCC1231 / 31, C1335 / 35Steering Angle Sensor Circuit
CIRCUIT DESCRIPTION
The steering angle sensor signal is sent to the skid control ECU via the CAN communication system. When
there is a malfunction in the communication system, the DTCs will be detected by the diagnosis function.
DTC No.DTC Detecting ConditionTrouble Area
C1231 / 31Data is not transmitted to the steering angle sensor for a
fixed time invalid steering angle sensor data.
Translate ECU
Steering angle sensor
Steering angle sensor communication circuit
Skid control ECU
CAN communication system
C1335 / 35
When the +BS terminal voltage is 9.5 V or more, data trans-
mission from the steering angle sensor is impossible for 1
sec. or more.
Translate ECU
Steering angle sensor
Steering angle sensor to translate ECU circuit
Skid control ECU
CAN1 communication system
DI93L±04
