Signal Too High. Permanent Fault

Signal too high. Permanent fault

Checking the air conditioning (A/C) relay








- Ignition off
- Remove air conditioning (A/C) relay 2/10.
Connect an ohmmeter between the air conditioning (A/C) relay terminals #1 and #2 (relay side).









The ohmmeter must read approximately 105 ohms at +20°C

OK - Checking the signal cable

Not OK - Defective air conditioning (A/C) relay

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Checking the signal cable




- Ignition on.
Check the cable between engine cooling fan (FC) relay base terminal #2 and engine control module (ECM) connector terminal #68. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.













Continue - Verification

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Defective air conditioning (A/C) relay
Try a new air conditioning (A/C) relay.

Continue - Verification

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Verification








- Reconnect the connectors, reinstall components etc.
- Connect VCT2000
- Ignition on.
Click the VCT2000 symbol to activate the A/C relay.





Does the air conditioning (A/C) relay click?

Yes - FAULT FOUND

No - No Fault Found 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 the air conditioning (A/C) relay

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