Signal Too Low. Intermittent Fault

Signal too low. Intermittent fault

Checking wiring
Check that the resistance between relay terminals #1 and #2 is approximately 75-105 ohms at +20°C.
Check the signal cable between engine control module (ECM) terminal #38 (half speed), terminal #8 (full speed) and terminal #69 (air conditioning (A/C) cooling fan) and relay terminal #2. 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. Remedy as necessary.

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













Select Continue.

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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