Faulty Signal
Faulty signal
Checking status
- Start the engine and let it idle. Engine should run evenly
Does the engine run on all cylinders?
Yes - Intermittent fault
No - Faulty signal. Permanent fault
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Faulty signal. Permanent fault
Checking connector and wiring
Check ignition coil connector for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check signal cable between ignition coil #1 and engine control module (ECM):
#A31 (ECM-3300)
#A30 (ECM-3310)
#A29 (ECM-3320)
#A51 (ECM-3330)
#A50 (ECM-3340)
for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.
Other information:
- For connection of engine control module (ECM) breakout box, see Connecting the breakout box Connecting the Breakout Box
- To access/replace the ignition coil, see Replacing ignition coil Service and Repair
- To access/replace the engine control module (ECM), see
- For information about signals, see Signal specification Signal Description / Specification.
Continue - Verification
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Verification
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reinstall connectors, components etc.
- Start the engine and let it idle. Engine should idle evenly.
Does the engine run on all cylinders?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFICATION FAILED - Fault-tracing information
VERIFIED - Fault Found
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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 - Faulty signal. Permanent fault
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Intermittent fault
Faulty signal. Intermittent fault
Checking cables and connectors
Check ignition coil connector for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults
and loose connections according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check signal cable between ignition coil #1 and engine control module (ECM):
#A31 (ECM-3300)
#A30 (ECM-3310)
#A29 (ECM-3320)
#A51 (ECM-3330)
#A50 (ECM-3340)
for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Other information
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- To access/replace the ignition coil, see Replacing ignition coil Service and Repair
- For information about signals, see Signal specification Signal Description / Specification.
Continue - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).
Do you want to view the information again?
Yes - Attempt New Test
No - Fault Found
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Attempt New Test - Checking cables and connectors
FAULT FOUND - DONE
DONE - DONE
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DONE - DONE
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