Faulty Signal. Intermittent Fault

Faulty signal. Intermittent fault

Checking wiring
Check the engine control module (ECM) and engine speed (RPM) sensor connectors. Check for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.
Check in particular for damage or loose terminal pins.
Check the signal cables between engine control module (ECM) terminals #54 and #24 and engine speed (RPM) sensor terminals #2 and #1. Check for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults. Check for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults. Check for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults. Check for a short-circuit to each other. Remedy if necessary.
If no faults are found in the above fault-tracing, try a new engine speed (RPM) sensor. See Replacing engine speed (RPM) sensor Service and Repair.

Other information
- To connect the breakout box, see Connecting the breakout box. EMS 2000 Connecting The Breakout Box. EMS 2000.













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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 wiring

FAULT FOUND - DONE

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