Signal Too High. Intermittent Fault

Signal too high. Intermittent fault

Checking wiring
Check the engine control module (ECM) and air conditioning (A/C) pressure sensor connectors. Check for contact resistance and oxidation according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults.
Check in particular for damage or loose terminal pins.
Check the signal cable between engine control module (ECM) terminal #14 and air conditioning (A/C) pressure sensor terminal 2. Check for an intermittent short-circuit to supply voltage according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults. Remedy if necessary.
Check the ground lead between engine control module (ECM) terminal #77 and air conditioning (A/C) pressure sensor terminal 1. Check for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring And Terminals. Intermittent Faults. Remedy if necessary.
Try a new air conditioning (A/C) pressure sensor if no faults are found in the above fault-tracing.

Other information
- To connect the breakout box, see Connecting the breakout box. EMS 2000 Connecting The Breakout Box. EMS 2000
- To replace the air conditioning (A/C) pressure sensor, see Replacing the air conditioning (A/C) system pressure sensor Replacing The Air Conditioning (A/C) System Pressure Sensor.













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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).

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Yes - Attempt New Test

No - FAULT FOUND

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Attempt New Test - Checking wiring

FAULT FOUND - DONE

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