Signal Sporadic. Intermittent Fault

Signal sporadic. Intermittent fault

EFI-422 Atmospheric pressure sensor, signal

Identification
First read Identifying cars constructed according to ORVR Application and ID.

Is the car constructed according to ORVR?

Yes - Safety

No - Signal sporadic: Intermittent fault

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Signal sporadic: Intermittent fault

EFI-422 Atmospheric pressure sensor, signal

Checking cables and terminals




- Check fuel tank pressure sensor and engine control module (ECM) connectors for loose connections according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between fuel tank pressure sensor terminal 1 and engine control module (ECM) #B15 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , and an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between fuel tank pressure sensor terminal 3 and engine control module (ECM) #B31 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , and an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between fuel tank pressure sensor terminal 2 and engine control module (ECM) #B28 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- The fuel tank pressure sensor power cable is connected inside the engine control module (ECM) to the air conditioning (A/C) pressure sensor, atmospheric pressure sensor and accelerometer power cables.
If anything happens to any of these cables all four will be affected.
Check cables between:
- air conditioning (A/C) pressure sensor terminal 3 and engine control module (ECM) #B29.
- atmospheric pressure sensor terminal 1 and engine control module (ECM) #B15
- accelerometer terminal 1 and engine control module (ECM) #B1.
for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and an intermittent short-circuit to ground Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.

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 cables and terminals

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Safety
First read Safety regulations for handling fuel Safety Regulations For Handling Fuel.

Continue - Checking cables and terminals

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Checking cables and terminals








- Check fuel tank pressure sensor and control module connectors for loose connections. Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and contact resistance and oxidation. Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between fuel tank pressure sensor terminal 3 and control module #B15 for an intermittent open-circuit. Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , an intermittent short-circuit to ground. Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and an intermittent short-circuit to supply voltage. Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between fuel tank pressure sensor terminal 2 and control module #B31 for an intermittent open-circuit Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults , an intermittent short-circuit to ground. Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and an intermittent short-circuit to supply voltage. Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between fuel tank pressure sensor terminal 1 and control module #B28 for an intermittent open-circuit. Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- The fuel tank pressure sensor power cable is connected inside the engine control module (ECM) to the air conditioning (A/C) pressure sensor, atmospheric pressure sensor and accelerometer power cables.
If anything happens to any of these cables all four will be affected.
Check cables between:
- air conditioning (A/C) pressure sensor terminal 3 and engine control module (ECM) #B29
- atmospheric pressure sensor terminal 1 and engine control module (ECM) #B15
- accelerometer terminal 1 and engine control module (ECM) #B1
for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault and an intermittent short-circuit to ground. Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.





Continue - Fault-tracing information
DONE

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Fault-tracing information
Information
Attempt New Test - Checking cables and terminals

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