Troubleshooting

Troubleshooting ECM-P007300

Checking the status




- Ignition on
Read the diagnostic status and fault 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 components and wiring

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Checking components and wiring




- Ignition off
Check the signal cables. Check for a short-circuit to supply voltage. Check the signal cables for open circuit.
Check between:
- Engine control module (ECM) #B29 (#C29) and outdoor temperature sensor's connector #1, signal cable (+).
- Engine control module (ECM) #B9 (#C9) and outdoor temperature sensor's connector #2, signal cable (-).
Remedy as necessary.

Other information
- Connecting the breakout box, B8444S Connecting The Breakout Box, Engine Control Module (ECM)
- Checking wiring and terminals Checking Wiring And Terminals









Continue - Verification

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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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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information

Attempt New Test - Checking components and wiring

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