| P1145 | Calculated torque error |
|---|---|
|
DETECTION CONDITION
|
• Base torque map – Not plausible
|
|
POSSIBLE CAUSE
|
• Erratic signal from fuel pressure sensor
• Fuel injector malfunction
• Fuel metering control valve malfunction
• Fuel leakage or clogging in fuel system
• Fuel injection control improper operation
• Turbo charging system improper operation
• Engine malfunction (low compression or excessive friction loss)
• Fuel limiter malfunction
• Fuel supply pump malfunction
• PCM malfunction
|
Diagnostic procedure
| STEP | INSPECTION | ACTION | |
|---|---|---|---|
|
1
|
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has the FREEZE FRAME DATA been recorded?
|
Yes
|
Go to the next step.
|
|
No
|
Record the FREEZE FRAME DATA on repair order, then go to the next step.
|
||
|
2
|
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related service repair information availability.
• Is any related repair information available?
|
Yes
|
Perform repair or diagnosis according to the available repair information.
If the vehicle is not repaired, go to the next step.
|
|
No
|
Go to the next step.
|
||
|
3
|
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
• Is P1145 on FREEZE FRAME DATA?
|
Yes
|
Go to the applicable DTC inspection.
|
|
No
|
Go to the next step.
|
||
|
4
|
INSPECT FUEL LINE
• Turn the engine switch to the ON position.
• Inspect for leakage or clogging in the following fuel lines for each cylinder.
• Is there any malfunction?
|
Yes
|
Repair or replace the suspected fuel line, then go to Step 10.
|
|
No
|
Go to the next step.
|
||
|
5
|
INSPECT FUEL METERING CONTROL VALVE
• Inspect the fuel metering control valve.
• Is there any malfunction?
|
Yes
|
Replace the fuel supply pump, then go to Step 10.
|
|
No
|
Go to the next step.
|
||
|
6
|
INSPECT FUEL PRESSURE SENSOR
• Inspect the fuel pressure sensor.
• Is there any malfunction?
|
Yes
|
Replace the common rail, then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
7
|
INSPECT FUEL INJECTOR
• Inspect the fuel injector.
• Is there any malfunction?
|
Yes
|
Repair the fuel injector, then go to Step 10.
|
|
No
|
Go to the next step.
|
||
|
8
|
INSPECT TURBO CHARGING SYSTEM OPERATION
• Inspect the turbo charging system operation.
• Does the turbo charging system operate properly?
|
Yes
|
Go to the next step.
|
|
No
|
Repair or replace the malfunctioning part, then go to Step 10.
|
||
|
9
|
INSPECT ENGINE COMPRESSION
• Measure the engine compression.
• Is the engine compression correct?
|
Yes
|
Inspect for the following:
• Fuel supply pump
• Fuel pressure limiter
• Engine friction loss
If malfunction is appeared, replace the suspected part.
Then go to the next step.
If it is normal, go to the next step.
|
|
No
|
Inspect for the following:
• Damaged valve sheet
• Worn valve stem and valve guide
• Worn or stuck piston ring
• Worn piston or cylinder
• Improper valve timing
If malfunction is appeared, replace the suspected part.
Then go to the next step.
If it is normal, go to the next step.
|
||
|
10
|
VERIFY THAT DTC P1145 TROUBLESHOOTING IS COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the M-MDS.
• Start the engine and warm-up to normal operating temperature.
• Run the vehicle under the FREEZE FRAME DATA stored condition.
• Retrieve the DTC using the M-MDS.
• Is the PENDING CODE same DTC present?
|
Yes
|
Replace the PCM, then go to the next step.
|
|
No
|
Go to the next step.
|
||
|
11
|
VERIFY AFTER REPAIR PROCEDURE
• Perform the after repair procedure.
• Are any DTCs present?
|
Yes
|
Go to the applicable DTC inspection.
|
|
No
|
DTC troubleshooting completed.
|
||