Important: Do not perform this check if no driveability concern exists.
The Diagnostic System Check - Manual Transmission is an organized approach to identifying a condition created by an electronic engine control system malfunction. The Diagnostic System Check - Manual Transmission is the starting point for any driveability concern diagnosis. This directs the service technician to the next logical step in order to diagnose the concern. Understanding the table and using it correctly will reduce diagnostic time, and will prevent the replacement of good parts.
The numbers below refer to the step numbers on the diagnostic table.
This test ensures that the scan tool is getting power.
This test ensures that the scan tool is communicating to the PCM.
This test ensures that the PCM has the latest calibrations.
This test checks to see if any related DTCs should be diagnosed first.
This test checks to see if the customer concern is with Inspection and Maintenance (I/M) testing.
Step | Action | Yes | No | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Important:
Does the scan tool power-up? | Go to Step 2 | Go to Scan Tool Does Not Power Up in Data Link Communications | |||||||||
Does the scan tool display the PCM data? | Go to Step 3 | Go to Scan Tool Does Not Communicate with Class 2 Device in Data Link Communications | |||||||||
Does the PCM require a calibration update? | Go to Step 11 | Go to Step 4 | |||||||||
4 | Does the scan tool display any PCM DTCs? | Go to Step 5 | Go to Step 8 | ||||||||
5 | Record the Freeze Frame and Failure Records information with the scan tool. Did you complete the action? | Go to Step 6 | -- | ||||||||
Were any of the PCM DTCs P0601, P0602, or P1621? | Go to DTC P0601, P0602, P0603, P0604, P0605, P0606, P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610 in Engine Controls - 2.2L (L61) | Go to Step 7 | |||||||||
7 | Was the DTC a P0502? | Go to Diagnostic System Check - Engine Controls in Engine Controls - 2.2L (L61) | |||||||||
8 | Were any BCM DTCs set? | Go to Diagnostic Trouble Code (DTC) List in Body Control System | Go to Step 9 | ||||||||
Is the customer concern with the Inspection/Maintenance (I/M) testing? | Go to Inspection/Maintenance (I/M) System Check in Engine Controls - 2.2L (L61) | Go to Step 10 | |||||||||
10 |
Did a DTC set? | ||||||||||
11 | Update the PCM with the latest calibration as necessary. Did you perform the task? | Go to Step 12 | -- | ||||||||
12 |
Does the system operate normally without setting any DTCs? | System OK | Go to Step 1 |