Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking components and wiring
Check the power supply cable. Check for a short-circuit to ground. Also check that the fuse is intact.
Check the cable between engine control module (ECM) terminal #A7 (#A7) and engine cooling fan (FC) relay terminal #IN1. Check for a short-circuit to ground.
Remedy as necessary.

Other information
- To connect the breakout box, see Connecting the breakout box, B5234T9, B5244T7 Connecting The Breakout Box
- For information about signals, see Signal specification Signal Specifications
- Checking wiring and terminals Checking Wiring and Terminals














Continue - Verification

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Verification




Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off.
- Reinstall connectors, components etc.
- Ignition on.
- Activate engine cooling fan (FC).





Does the engine cooling fan (FC) start?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking components and wiring

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