Check the Supplies and Grounds to the Air Conditioning Module

: CHECK THE SUPPLIES AND GROUNDS TO THE AIR CONDITIONING CONTROL MODULE (A/CCM)

G239843t103 : CHECK THE IGNITION SUPPLY TO THE A/CCM
1. Disconnect the A/CCM electrical connector, CR119.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between CR119, pin 03 (WG) and GROUND.

- Is the voltage less than 10 volts?

-> Yes
REPAIR the circuit between the A/CCM and battery. This circuit includes the primary junction box (fuse 01) and the ignition switch. TEST the system for normal operation.

-> No

G239843t104 : CHECK THE SWITCHED SYSTEM POWER (SSP) SUPPLY TO THE A/CCM
1. Make sure the SSP relay is energized.
2. Measure the voltage between CR119, pin 02 (N) and GROUND.

- Is the voltage less than 10 volts?

-> Yes
REPAIR the circuit between the A/CCM and battery. This circuit includes the primary junction box (fuse 28). TEST the system for normal operation.

-> No

G239843t105 : CHECK THE SYSTEM GROUND TO THE A/CCM
1. Measure the resistance between CR119, pin 22 (B) and GROUND.

- Is the resistance greater than 5 ohms?

-> Yes
REPAIR the high resistance circuit. TEST the system for normal operation.

-> No
CHECK for DTCs indicating a network or module fault. REFER to the DTC index.