Signal Too High - Permanent Fault
Signal too high. Permanent fault
Diagnostic trouble code (DTC) status ECM-2400 Fuel pump (FP) relay. Signal too high
Reading off diagnostic trouble code (DTC)status ECM-2400
Note! When reading off the Diagnostic trouble code (DTC) status, other stored diagnostic trouble codes (DTCs) and their status will be listed.
- Read off the diagnostic trouble code (DTC) status. Check the status of the relevant diagnostic trouble code (DTC).
Was the status of the relevant diagnostic trouble code (DTC) permanent?
Yes - Checking cables
No - Intermittent fault
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Intermittent fault
Signal too high. Intermittent fault
Checking cables
Check the cable between engine control module (ECM) #B45 (#B55) and central electronic module #14B (#A34) for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Other information
- Connecting the breakout box / accessing the control module, see Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box.
- To connect the central electronic module breakout box, see Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM).
- For information about signals, see Signal Specifications.
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
FAULT FOUND - DONE
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DONE - DONE
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Checking cables
Check the cable between engine control module (ECM) #B45 (#B55) and central electronic module #14B (#A34) for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary
Other information:
- Connecting the breakout box / accessing the control module, see Connecting the breakout box Connecting the Breakout Box.
- To connect the Central electronic module (CEM)breakout box, see Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM).
- For information about signals, see Signal description Signal Description.
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 the connectors, components etc.
- Ignition on.
Read off the central electronic module (CEM) fuel pump input signal from the engine control module (ECM).
Start the engine and check that the fuel pump (FP) input signal to the Central electronic module changes status.
Does the input signal status change?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFICATION FAILED - Fault-tracing information
VERIFIED - Fault Found
PAPER - No 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 - Checking cables
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