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4F-34 Electronic Stability Program:
Step
6
Check wheel speed sensor
1) Refer to "Front / Rear Wheel Speed Sensor On-Vehicle
Inspection", check output voltage or waveform.
Is specified voltage and/or waveform obtained?
DTC C1024: Steering Angle Sensor Circuit Failure
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
• Steering angle sensor internal defect is detected by
CPU in steering angle sensor.
• Steering angle sensor signal is out of specified range.
DTC Troubleshooting
Step
1
Was "Electronic Stability Program Check" performed?
2
DTC check for ESP®
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch ON and check DTC for ESP®.
Are DTC U1073 and/or U1126 detected?
3
Check sensor calibration
1) Calibrate steering angle sensor referring to "Sensor
Calibration".
2) Clear all DTC(s) and check DTC for ESP®.
Is DTC C1024 still detected?
4
Check steering angle sensor
1) Check steering angle sensor referring to "Steering Angle
Sensor On-Vehicle Inspection".
Is it good condition?
DTC C1027: ESP® OFF Switch Circuit Failure
Wiring Diagram
BLK/ORN
[A]: ESP® control module connector (viewed from terminal side)
Action
Action
12V
1
LT GRN/RED
E85-7
1. ESP® OFF Switch
Yes
Substitute a known-
good ESP® hydraulic
unit / control module
assembly and recheck.
Trouble Area
• Steering angle sensor
• ESP® control module
Yes
Go to Step 2.
Go to applicable DTC
diag. flow.
Go to Step 4.
Substitute a known-
good ESP® hydraulic
unit / control module
assembly and recheck.
[A]
2
2. ESP® hydraulic unit control module assembly
No
Replace wheel speed
sensor and recheck.
S7RS0B4604029
No
Go to "Electronic
Stability Program
System Check".
Go to Step 3.
Steering angle sensor
calibration was
incompleted.
Replace steering angle
sensor.
S7RS0B4604030
E85
32
1
17
33
2
18
34
3
19
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4
20
36
5
21
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6
22
38
7
23
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8
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40
9
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10
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11
27
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12
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15
31
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16
I6RS0B460018-01
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