DTC B1970
Precautions: Precautions for Headlight Auto Leveling System Service · Precautions for Body, Cab and Accessories · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
B1970: Wheel Speed Sensor and/or Its Circuit Malfunction Vehicle speed signal is not inputted by CAN communication. |
•Wheel speed sensor and/or its circuit
•Wheel speed sensor encoder •ESP® control module •Headlight auto leveling control module |
DTC Confirmation Procedure
WARNING:
If you do not select a suitable route and take proper precautions when performing a road test, an accident can occur.
•Select a level road with no traffic to minimize the risk of accident.
•Perform the test extremely carefully.
•Perform the road test with 2 persons, a driver and a tester.
•Perform the test extremely carefully.
•Perform the road test with 2 persons, a driver and a tester.
NOTE:
Troubleshoot first unexpected DTCs previously detected in “DTC Confirmation Procedure”.
1)Drive vehicle at 40 km/h (25 mile/h) constantly for 10 sec. or more.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
DTC check
1)Clear DTC.
2)Set ignition “OFF”.
3)Perform “DTC Confirmation Procedure” and recheck DTC.
Is DTC B1970 still detected?
|
Go to Step 2.
|
Intermittent trouble.
|
| 2 |
DTC check
1)Check DTC in ESP® control module.
Is there any DTC(s) detected?
|
Go to troubleshooting for applicable DTC.
|
Replace headlight auto leveling control module and recheck DTC.
|