A/C Switch & Compressor Clutch Relay

Using DVOM, measure power supply voltage of ECM. Disconnect ECM connector. Turn A/C switch and ignition switch to ON positions. Measure voltage between specified ECM terminals and vehicle ground. See A/C POWER ECM TERMINAL LOCATION table. Voltage should be 6 volts or greater. If voltage is not battery voltage, check and repair circuit.

A/C POWER ECM TERMINAL LOCATION

Application

⁽¹⁾ Terminal No.

Precis (California)

⁽²⁾ 6 and ⁽³⁾ 13

Precis (Federal)

⁽⁴⁾ 10 and ⁽⁵⁾ 18

⁽¹⁾	See Figure and Figure .

⁽²⁾	ECM connector C50-1. See Figure .

⁽³⁾	ECM connector C50-2. See Figure .

⁽⁴⁾	ECM connector C50-6. See Figure .

⁽⁵⁾	ECM connector C50-4. See Figure .