Signal Too High - Intermittent Fault

Signal too high. Intermittent fault

Checking wiring and connectors
Check the control module and mass air flow (MAF) sensor connectors for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Also check for loose connections according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. The intake air temperature (IAT) sensor is integrated in the mass air flow (MAF) sensor.
Check the signal cable between control module connector terminal A4 (#A4) and mass air flow (MAF) sensor connector terminal 3 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults. Also check for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the ground lead between control module connector terminal A61 (#B3) and mass air flow (MAF) sensor connector terminal 4 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.

Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- To access / replace the control module see
- To access / replace the Mass Air Flow (MAF) sensor, see
- For information about signals, see Signal specification Signal Description / Specification.










Continue - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).

Do you want to view the information again?

Yes - Attempt New Test

No - Fault Found

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Attempt New Test - Checking wiring and connectors

DONE - DONE

FAULT FOUND - DONE

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