PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE
| 1. | Make sure the scan tool will communicate with the appropriate modules. |
Are you currently experiencing a NO RESPONSE condition?
Yes
- The NO RESPONSE condition must be properly diagnosed before continuing. (Refer to 29 - Non-DTC Diagnostics/Communication - Diagnosis and Testing) .
- (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Diagnosis and Testing) and (Refer to 29 - Non-DTC Diagnostics/Drivability - Gas - Diagnosis and Testing) for diagnostic procedures and other possible causes.
No
- Go To 2
Is the customer complaint a NO START condition?
Yes
- Check the vehicle for any NO START related PCM DTCs or Vehicle Theft Security related DTCs.
- If no Theft related DTCs are present, (Refer to 29 - Non-DTC Diagnostics/Drivability - Gas - Diagnosis and Testing) for the No Start related diagnostic procedures.
No
- Go To 3
| 1. | Continue by reading Powertrain Control Module (PCM) DTCs and record the related Freeze Frame data if any DTCs are present. |
| 2. | Whether or not any DTCs are present you will want to check the following items which may assist in repairing the customers complaint successfully. |
| 3. | Check the vehicle's repair history. |
| 4. | If the vehicle has a repair history that pertains to the customer's current complaint, review the repair. |
| 5. | Inspect the vehicle for any aftermarket accessories that may have been installed incorrectly. |
| 6. | Check for any Technical Service Bulletins (TSB)s related to the customer's complaint or DTCs. |
| 7. | If a TSB applies, follow the instructions per the TSB. |
Choose the following scenario that best applies.
The TSB repaired the customer's complaint.
A DTC is present, no TSB applies or the TSB didn't repair the customer's complaint.
- Go To 4
No DTCs are present.
- Perform the INTERMITTENT CONDITION diagnostic procedure (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).
| 1. | Clear the DTCs. |
| 2. | Attempt to duplicate the customer complaint. |
| 3. | Whether the customer complaint can be duplicated or not, make a quick wire harness inspection related to the DTCs that were previously cleared. |
| 4. | Check the Powertrain Control Module connectors, the suspected component connection, in-line connectors, wire harness splices, PCM power and ground circuits and any related fuses. |
| 5. | If the DTCs are fuel or air related, check the fuel level and quality. |
Were any repairs made that fixed the customer's complaint?
Yes
No
- Perform the diagnostic test procedure related to the DTC. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Diagnosis and Testing) and perform the appropriate diagnostic procedure.