Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking wiring and components
Check the system relay (2/14) base and engine control module (ECM) connectors for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Check for loose or damaged terminal pins.









Was a fault detected?

Yes - Verification

No - Checking wiring and components

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Checking wiring and components
Check that the resistance in the system relay (2/14) between terminals 1 and 2 is approximately 75 ohms at +20°C. Replace the system relay if necessary.
Check the system relay power supply to terminal 2 (86) via fuse 11 in the relay box in the passenger compartment.
Check the cable between system relay base 2 (86) and fuse 11 for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.
Check the signal cable between engine control module (ECM) terminal 10 and system relay base terminal 1 for a short-circuit to ground. Remedy according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault and for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring And Terminals. Permanent Fault.

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













Select Continue.

Continue - Verification

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Verification




- Ignition on.
Activate the system relay. Check that the relay clicks when it is activated.





Is the function OK?

Yes - FAULT FOUND

No - No Fault FoundFault-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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking wiring and components

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