Signal Too Low. Intermittent Fault
Signal too low. Intermittent fault
EFI-621 Fuel tank 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 too low. Intermittent fault
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Signal too low. Intermittent fault
EFI-621 Fuel tank pressure sensor, signal
Checking cables and terminals
- Check fuel tank pressure sensor and control module connectors and connectors 24/2 and 24/4 for loose connections according to 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 tank pressure sensor terminal 3 and engine control module (ECM) #B31 via connector 24/4 terminal E5 and connector 24/2 terminal C6 for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between tank pressure sensor terminal 1 and engine control module (ECM) #B15 via connector 24/4 terminal E4 and connector 24/2 terminal C5 for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and an intermittent open-circuit.
- Check cable between accelerometer terminal 1 and engine control module (ECM) #B1 for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between air conditioning (A/C) pressure sensor terminal 3 and engine control module (ECM) #B29 for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Continue -
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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 -
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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 and connectors 24/2 and 24/4 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 2 and engine control module (ECM) #B31 via connector 24/4 terminal E5 and connector 24/2 terminal C6 for an intermittent short-circuit to ground. Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between tank pressure sensor terminal 3 and engine control module (ECM) #B15 via connector 24/4 terminal E4 and connector 24/2 terminal C5 for an intermittent short-circuit to ground. Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and an intermittent open-circuit. Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between accelerometer terminal 1 and engine control module (ECM) #B1 for an intermittent short-circuit to ground. Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between air conditioning (A/C) pressure sensor terminal 3 and engine control module (ECM) #B29 for 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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