Fault-Tracing Information

Fault-tracing

Checking the status




- Start the engine.
- A/C on.
Read the diagnostic status and trouble status for the diagnostic trouble code by selecting the diagnostic trouble code in the list.
Check if the malfunction is permanent or intermittent by reading off the diagnostic trouble code's status when the diagnostic status is "Implemented".
If the trouble status is "Malfunction found", this indicates that the malfunction is permanent. If the trouble status is "No malfunction found", this indicates that the malfunction is intermittent and not active right now.

Note! Trouble status cannot go from "Malfunction found" to "No malfunction found" in the same operating cycle.









Continue - Checking component and cables

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Checking component and cables




- Ignition off
Check the signal cables for short-circuit to voltage, short-circuit to ground, and open circuit.
Check between:
- Engine control module (ECM) #A49 (#A49) and the control valve's (solenoid's) connector #2, signal cable (+).

Hint: The control valve with solenoid is located on the underside of the A/C compressor.

Remedy as necessary.

Other information
- Connecting the breakout box Connecting The Breakout Box, Engine Control Module (ECM)
- Signal specification Signal Specification, Engine Control Module (ECM)
- Solenoid compressor Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals





Continue - Verification

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Troubleshooting information

Attempt New Test - Checking component and cables

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Verification




Verification

Hint: After repairing, it is necessary to check that the malfunction has been fixed.








- Ignition off
- Reconnect the connectors, components, etc.
- Ignition on
- Read the diagnostic status and trouble status for the diagnostic trouble code by selecting the diagnostic trouble code in the list.
Check the trouble status for the diagnostic trouble code when the diagnosis is "Implemented". When the function is correct the trouble status should be "No malfunction found" when the diagnosis is implemented.





Is the function OK?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Troubleshooting information

VERIFIED - FAULT FOUND

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