C1090

DTC C1090: ECM Detect Rolling Counter Failure from ESP(R) Control Module

DTC Detecting Condition and Trouble Area






DTC Troubleshooting

1.
Was "Electronic Stability Program Check" performed?
YES -
Go to Step 2.
NO -
Go to (ESP) Check Electronic Stability Program Check.

2. DTC check for ESP(R)

Connect scan tool to DLC with ignition switch turned OFF.
Turn ignition switch ON and check DTC for ESP(R).

Is there any DTC(s) other than C1038 and C1090?
YES -
Go to applicable DTC diag. flow.
NO -
Go to Step 3.

3. DTC check for ECM

Check DTC for ECM.

Is DTC U0073 and/or DTC U0121 detected?
YES -
Go to applicable DTC diag. flow.
NO -
Substitute a known-good ESP(R) hydraulic unit / control module assembly and recheck.