Signal Too High. Intermittent Fault
Signal too high. Intermittent fault
EFI-444 Accelerometer, signal
Checking cables and terminals
- Check accelerometer 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 the cable between accelerometer terminal 1 and engine control module (ECM) #B1 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- Check cable between accelerometer 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.
- Check cable between accelerometer terminal 3 and engine control module (ECM) #B32 for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults and an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
- The accelerometer power cable is connected inside the engine control module (ECM) to the fuel tank pressure sensor, atmospheric pressure sensor and air conditioning (A/C) pressure sensor power cables. If anything happens to any of these cables all four will be affected. Air conditioning (A/C) pressure sensor wiring is pre-routed, even on cars without air conditioning, and should always be checked.
Check cables between:
Accelerometer terminal 1 and engine control module (ECM) #B1.
Air conditioning (A/C) pressure sensor terminal 3 and engine control module (ECM) #B29.
Tank pressure sensor terminal 1 and engine control module (ECM) #B15.
Atmospheric pressure sensor terminal 1 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 , and an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Select "Continue" when the fault has been repaired.
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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