B1090

B1090-ACTUATOR PULSE COUNT PERFORMANCE

For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

Theory of Operation

The A/C Heater Control monitors the door driver circuits during actuator operation for conditions that prevent proper door operation. If a pulse count error is detected, the Front A/C Heater Module will set this DTC. This DTC is a informational DTC and indicates that a fault occurred while driving a door actuator and that additional testing is necessary to provide more details about the reported fault.

- When Monitored:
With the ignition on.

- Set Condition:
If the A/C Heater Control detects a pulse count error while attempting to drive a door actuator. This DTC has a maturing time of five seconds and a de-maturing time of 10 seconds. If the DTCs status changes from active to stored, it will stay in memory for 100 ignition cycles.





1. CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE AND CONTROL CIRCUIT OPEN DTCS
1. Turn the ignition on.
2. With the scan tool, read HVAC DTCs.

Are there any active control circuit performance or control circuit open DTCs present?

Yes

- Testing and Inspection Perform the appropriate diagnostic procedure.

No

- Go To 2

2. RUN ACTUATOR CALIBRATION TEST
1. With the scan tool, perform an Actuator Calibration Test. and read HVAC DTCs after the Calibration Test is completed.
2. With the scan tool, read HVAC DTCs.

Does the scan tool display any DTCs?

Yes

- Testing and Inspection Perform the appropriate diagnostic procedure.

No

- Test complete.