DTC C1090 / C1091 / C1094
Precautions: Precautions for ESP® · Precautions for Diagnosing Trouble · Test with Speedometer Tester or Other Equipment · Precautions for Brakes · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
C1090: ECM Detect Rolling Counter Failure from ESP® Control Module ESP® control module sends invalid CAN data to ECM. |
•CAN communication circuit
•ECM •ESP® control module |
|
C1091: CAN Invalid Data from ECM DTC concerned with ECM is detected. |
|
|
C1094: Torque Request Reject Status ESP® control module receives invalid CAN data from ECM (about engine torque control). |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “ESP® System Check” performed?
|
Go to Step 2.
|
Go to ESP® System Check.
|
| 2 |
DTC check
1)Perform DTC Check.
Is other DTC(s) than C1090, C1091 or C1094 detected?
|
Go to applicable DTC troubleshooting.
|
Go to Step 3.
|
| 3 |
DTC check for ECM
1)Check ECM for DTC.
•M16A model:
 •K14C model: •D16AA model: Is DTC U0073 or U0121 detected?
|
•M16A model: Go to Troubleshooting for Communication Bus Off:M16A Model or Troubleshooting for Lost Communication:M16A Model.
•K14C model: Go to Troubleshooting for Communication Bus Off:K14C Model or Troubleshooting for Lost Communication:K14C Model. •D16AA model: Go to Troubleshooting for Communication Bus Off:D16AA Model or Troubleshooting for Lost Communication:D16AA Model. |
Replace ESP® hydraulic unit / control module assembly and recheck DTC.
|