Checking component and wiring
Check air conditioning (A/C) pressure sensor connector for contact resistance and oxidation according to Contact resistance and oxidation .
Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for an short-circuit to ground according to Short-circuit to ground, permanent faults .
Check signal cable between engine control module (ECM) #A68 (#B8) and air conditioning (A/C) pressure sensor #2 for an open circuit according to Open-circuit, permanent faults .
Check power supply cable between engine control module (ECM) #A39 (#A39) and air conditioning (A/C) pressure sensor #3 for an open-circuit according to Open-circuit, permanent faults .
Remedy as necessary.
Other information:
- Connecting the breakout box/accessing the control module, see Connecting the breakout box .
- Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5 V) and #1 is the signal ground.
- For information about signals on 5-cylinder engines, see Signal specification or Signal specification .
- Continue
Refer to Verification