DTC C1273: Low Output Signal of Rear Speed Sensor RH (Test Mode DTC); DTC C1274: Low Output Signal of Rear Speed Sensor LH (Test Mode DTC); DTC C1466: Rear Speed Sensor RH Circuit; DTC C1467: Rear Speed Sensor LH Circuit [02/2019 - 10/2019]: Description
Each speed sensor detects the wheel speed and sends the signals to the skid control ECU (brake booster with master cylinder assembly). These signals are used for ABS control.
DTCs C1273 and C1274 are cleared when the speed sensor sends a wheel speed signal or when Test Mode ends. DTCs C1273 and C1274 are output only in Test Mode.
 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
|
| DTC No. |
Detection Item |
INF Code |
DTC Detection Condition |
Trouble Area |
Note |
| C1273 |
Low Output Signal of Rear Speed Sensor RH (Test Mode DTC) |
- |
Detected only during Test Mode. |
- Rear speed sensor RH (Rear axle hub and bearing assembly RH)*1
- Rear speed sensor RH*2
- Sensor installation
- Rear speed sensor rotor RH (Rear axle hub and bearing assembly RH)
- Skid control sensor wire RH (No. 1 parking brake wire assembly)
|
- |
| C1274 |
Low Output Signal of Rear Speed Sensor LH (Test Mode DTC) |
- |
Detected only during Test Mode. |
- Rear speed sensor LH (Rear axle hub and bearing assembly LH)*1
- Rear speed sensor LH*2
- Sensor installation
- Rear speed sensor rotor LH (Rear axle hub and bearing assembly LH)
- Skid control sensor wire LH (No. 2 parking brake wire assembly)
|
- |
| C1466 |
Rear Speed Sensor RH Circuit |
521
522
523
524
526
527
528
529 |
- INF Code: 521
- At a vehicle speed of 10 km/h (6 mph) or more, speed sensor output from one or two wheels is lower than that from other wheels for 15 seconds or more.
- INF Code: 522
- At a vehicle speed of 10 km/h (6 mph) or more, outputs from both front speed sensors are 0 km/h (0 mph) for 15 seconds or more.
- INF Code: 523
- An open is detected in the speed sensor signal circuit for 0.5 seconds or more.
- INF Code: 524
- Instantaneous interruption of sensor signal from the malfunctioning wheel occurs 255 times or more.
- INF Code: 526
- When VM1 voltage is 8.6 V or more, sensor supply voltage drops for 0.5 seconds or more.
- INF Code: 527
- At a vehicle speed of 10 km/h (6 mph) or more, speed sensor output from one wheel is 0 km/h (0 mph) for 1 second or more.
- INF Code: 528
- When VM1 voltage is 8.6 V or more, sensor supply voltage drops for 60 seconds or more.
- INF Code: 529
- Speed sensor output is 270 km/h (167 mph) or more continuously for 5 seconds or more.
|
- INF Code: 521, 522, 524, 527
- Open or short in speed sensor
- Improperly installed speed sensor, or abnormal clearance between sensor and rotor
- Open or short in wire harness
- Improperly connected connector, deformation or corrosion of terminals
- Rear speed sensor RH (Rear axle hub and bearing assembly RH)*1
- Rear speed sensor RH*2
- Skid control ECU (Brake booster with master cylinder assembly)
- INF Code: 523
- Open or short in speed sensor
- Open or short in wire harness
- Improperly connected connector, deformation or corrosion of terminals
- Rear speed sensor RH (Rear axle hub and bearing assembly RH)*1
- Rear speed sensor RH*2
- Skid control ECU (Brake booster with master cylinder assembly)
- INF Code: 526, 528
- Open or short in wire harness
- Skid control ECU (Brake booster with master cylinder assembly)
- INF Code: 529
- Open or short in speed sensor
- Open or short in wire harness
- Rear speed sensor RH (Rear axle hub and bearing assembly RH)
- Skid control ECU (Brake booster with master cylinder assembly)
|
- |
| C1467 |
Rear Speed Sensor LH Circuit |
531
532
533
534
536
537
538
539 |
- INF Code: 531
- At a vehicle speed of 10 km/h (6 mph) or more, speed sensor output from one or two wheels is lower than that from other wheels for 15 seconds or more.
- INF Code: 532
- At a vehicle speed of 10 km/h (6 mph) or more, outputs from both front speed sensors are 0 km/h (0 mph) for 15 seconds or more.
- INF Code: 533
- An open is detected in the speed sensor signal circuit for 0.5 seconds or more.
- INF Code: 534
- Instantaneous interruption of sensor signal from the malfunctioning wheel occurs 255 times or more.
- INF Code: 536
- When VM1 voltage is 8.6 V or more, sensor supply voltage drops for 0.5 seconds or more.
- INF Code: 537
- At a vehicle speed of 10 km/h (6 mph) or more, speed sensor output from one wheel is 0 km/h (0 mph) for 1 second or more.
- INF Code: 538
- When VM1 voltage is 8.6 V or more, sensor supply voltage drops for 60 seconds or more.
- INF Code: 539
- Speed sensor output is 270 km/h (167 mph) or more continuously for 5 seconds or more.
|
- INF Code: 531, 532, 534, 537
- Open or short in speed sensor
- Improperly installed speed sensor, or abnormal clearance between sensor and rotor
- Open or short in wire harness
- Improperly connected connector, deformation or corrosion of terminals
- Rear speed sensor LH (Rear axle hub and bearing assembly LH)*1
- Rear speed sensor LH*2
- Skid control ECU (Brake booster with master cylinder assembly)
- INF Code: 533
- Open or short in speed sensor
- Open or short in wire harness
- Improperly connected connector, deformation or corrosion of terminals
- Rear speed sensor LH (Rear axle hub and bearing assembly LH)*1
- Rear speed sensor LH*2
- Skid control ECU (Brake booster with master cylinder assembly)
- INF Code: 536, 538
- Open or short in wire harness
- Skid control ECU (Brake booster with master cylinder assembly)
- INF Code: 539
- Open or short in speed sensor
- Open or short in wire harness
- Rear speed sensor LH (Rear axle hub and bearing assembly LH)
- Skid control ECU (Brake booster with master cylinder assembly)
|
- |
- *1: for 2WD
- *2: for AWD