Code 124, A/C Request Shorted
Code will set if Code 35 is not set, A/C compressor is not requested by HVAC serial data, voltage is present on A/C low pressure switch circuit for 20 seconds and engine speed is greater than 500 RPM for 20 seconds.
NOTE:
Test numbers refer to numbers on diagnostic chart.
- Determines if conditions to set code are present.
- With A/C low pressure switch unplugged and ignition on, scan A/C request should display off.
- With low pressure switch unplugged, there should be no voltage on the A/C high pressure switch circuit.
- With HVAC unplugged there should be no voltage on terminal "A" of A/C low pressure switch.