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 CAN communication system, it will be detected by the steering angle sensor zero point malfunction diagnostic function.
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
C1231/31 |
When ECU IG1 terminal voltage is 9.5 V or more, the steering angle sensor malfunction signal is received. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. |
CHECK DTC |
(a) Clear the DTCs (See page ).
(b) Turn the ignition switch off.
(c) Turn the ignition switch to ON again and check that no CAN communication
system DTC is output (See page ).
(d) Drive the vehicle and turn the steering wheel to the right and left at a
speed of 35 km/h (22 mph) and check that no speed sensor and yaw rate and acceleration
sensor DTCs are output (See page ).
Result |
Proceed to |
---|---|
No CAN communication system DTC and the speed sensor or yaw rate and acceleration sensor DTC are output |
A |
CAN communication system DTC is output |
B |
Speed sensor or yaw rate and acceleration sensor DTC is output |
C |
HINT:
B | ![]() |
INSPECT CAN COMMUNICATION SYSTEM |
C | ![]() |
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS |
|
2. |
INSPECT STEERING ANGLE SENSOR (POWER SOURCE TERMINAL) |
(a) Turn the ignition switch off. |
|
(b) Remove the steering wheel and the column cover.
(c) Make sure that there is no looseness at the locking part and the connecting part of the connector.
(d) Disconnect the steering angle sensor connector.
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D35-5 (IG) - Body ground |
Ignition switch ON |
11 to 14 V |
D35-6 (BAT) - Body ground |
Always |
11 to 14 V |
*1 |
Front view of wire harness connector (to Spiral Cable Sub-assembly (Steering Angle Sensor)) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
|
3. |
INSPECT STEERING ANGLE SENSOR (GROUND TERMINAL) |
(a) Turn the ignition switch off. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D35-2 (ESS) - Body ground |
Always |
Below 1 Ω |
*1 |
Front view of wire harness connector (to Spiral Cable Sub-assembly (Steering Angle Sensor)) |
HINT:
If troubleshooting has been carried out according to Problem Symptoms Table,
refer back to the table and proceed to the next step (See page
).
OK | ![]() |
REPLACE SPIRAL CABLE SUB-ASSEMBLY (STEERING ANGLE SENSOR) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) |
Meter Illumination is Always Dark
DESCRIPTION
In this circuit, the meter CPU receives auto dimmer signals from the main body
ECU (driver side junction block assembly) using the CAN communication system (CAN
No. 1 Bus). When the meter CPU receives an auto dimmer signal, it dims the meter
...
Intake Air Temperature Sensor Gradient Too High (P0111)
DESCRIPTION
The intake air temperature sensor, mounted on the mass air flow meter,
monitors the intake air temperature. The intake air temperature sensor has
a built-in thermistor with a resistance that varies according to the temperature
...
Customize Parameters
CUSTOMIZE PARAMETERS
1. INTUITIVE PARKING ASSIST SYSTEM (See page
)
2. POWER DOOR LOCK CONTROL SYSTEM (See page
)
3. WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Smart Key System) (See page
)
4. WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Smart Key System) (Se ...