Detection Condition

DTC P1460 indicates excessive current draw is detected on A/C Clutch Relay (ACCR) circuit when PCM grounds the circuit or voltage is not detected on ACCR circuit when circuit is not grounded by PCM. The Wide Open Throttle Air Conditioning Cut-Off (WAC) output is used by PCM to disengage A/C clutch when A/C operation is desirable. Under normal conditions (A/C off), PCM will ground WAC output which opens normally closed A/C clutch relay. When A/C demand switch is on, and A/C cycling switch and A/C high pressure switch contacts are closed, voltage is supplied to A/C clutch relay and to A/C Control Signal (ACCS) circuit. Voltage on ACCS circuit indicates to PCM A/C is requested. PCM will verify A/C clutch operation is desirable and adjust idle speed as necessary unground WAC output. This closes normally closed WOT A/C clutch relay and allows voltage to A/C clutch.