Faulty Signal. Permanent Fault
Faulty signal. Permanent fault
Checking for air leakage in the intake system
Check for air leakage in the intake system according to intake system/leak test Intake System/Leak Test.
Remedy as necessary.
Was there any air leakage?
Yes - Fault-tracing information
No - Checking for air leakage in the exhaust system
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Checking for air leakage in the exhaust system
Check for air leakage in the exhaust system according to Checking the exhaust system for leakage Checking For Air Leakage In The Exhaust System.
Remedy as necessary.
Was there any leakage?
Yes - Fault-tracing information
No - Checking fuel and residual pressures
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Checking fuel and residual pressures
Check the fuel pressure and residual pressure according to Measuring fuel pressure EMS 2000 Measuring Fuel Pressure EMS 2000.
Remedy as necessary.
Was the pressure OK?
Yes - Checking the compression
No - Fault-tracing information
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Checking the compression
Checking the engine:
Checking the engine:
- Ignition off
- Disconnect system relay 2/14
- Remove spark plugs.
Check the compression at wide open throttle (WOT).
In particular, check for uneven compression between the cylinders.
Note! Compression testing should always be carried out at wide open throttle (WOT) and with the engine at operating temperature. Diagnostic trouble codes (DTCs) ECM-24 and ECM-A3 will be stored because the system relay is disconnected.
Is the compression OK?
Yes - No Fault Found
No - Engine repairs
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Engine repairs
Carry out the repair required to the engine.
Press "Continue" when the fault has been repaired.
Continue - Verification
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Verification
Hint: Check after repair that the fault has been rectified.
- Reinstall system relay 2/14.
Start the engine and check that idle speed runs evenly.
Is idle speed even?
Yes - FAULT FOUND
No - No Fault FoundFault-tracing information
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Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - FAULT-TRACING FAILED
No - Attempt New Test
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FAULT-TRACING FAILED - FAULT-TRACING FAILED
Attempt New Test - Checking the engine:
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FAULT FOUND - Fault-tracing information
No Fault Found - Replacing the component
FAULT-TRACING FAILED - FAULT-TRACING FAILED
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Replacing the component
- Try a new three-way catalytic converter (TWC). Replace according to Three-way catalytic converter (TWC), replacing Service and Repair.
Select "Continue" when the fault has been remedied.
Continue - Fault-tracing information
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Fault-tracing information
FAULT FOUND - FAULT FOUND
Attempt New Test - Checking for air leakage in the intake system
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