Diagnostic procedure
WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
DTC P1608 [BP, BP WITH TC] DIAGNOSTIC PROCEDURE
| STEP |
INSPECTION |
ACTION |
| 1 |
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
- Check for related Service Bulletins and/or online repair information availably
- Is any related repair information available?
|
Yes |
Perform repair or diagnostic according to the available repair information
- If the vehicle is not repaired, go to the next step.
|
| No |
Go to the next step. |
| 2 |
INSPECT OUTPUT DEVICE CONTROL CIRCUIT FOR SHORT TO POWER
- Disconnect output device (purge solenoid valve, EGR valve, VTCS solenoid valve, EGR boost sensor solenoid valve and/or CDCV) connectors.
- Measure voltage following connectors.
- Purge solenoid valve terminal B (harness-side) and body GND
- EGR valve terminal E (harness-side) and body GND
- EGR valve terminal A (harness-side) and body GND
- EGR valve terminal B (harness-side) and body GND
- EGR valve terminal F (harness-side) and body GND
- VTCS solenoid valve terminal B (harness-side) and body GND
- EGR' boost sensor solenoid valve terminal B (harness-side) and body GND
- EVAP system leak detection pump terminal C (harness-side) and body GND
- Are voltages approx.0 V
|
Yes |
Go to the next step. |
| No |
Repair or replace appropriate harness for short to power, then go to the next step. |
| 3 |
VERIFY TROUBLESHOOTING OF DTC P1608 COMPLETED
- Make sure to connect all disconnected connectors.
- Clear DTC using the WDS or equivalent.
- Start engine.
- Is same DTC present?
|
Yes |
Replace PCM, then go to the next step. |
| No |
Go to the next step. |
| 4 |
VERIFY AFTER REPAIR PROCEDURE
|
Yes |
Go to the applicable DTC inspection.
(See
DTC TABLE ) |
| No |
Troubleshooting completed. |