Tests AA

PINPOINT TEST AA: INSUFFICIENT AIR CONDITIONING (A/C) COOLING

Test AA1:

Test AA1-AA3:

Test AA3-AA4:

Test AA4-AA6:

Test AA7:

Normal Operation
Under normal operation, the automatic temperature control (ATC) solenoid and manifold receives a ground from the dual automatic temperature control (DATC) module through circuit 1070 (BN/LB). When the heater control valve vacuum solenoid is to be energized, the ATC solenoid and manifold receives power from the DATC module through circuit 1069 (OG/LB).

Possible Causes
An open or short to ground in circuit 1069 (OG/LB).
- ATC solenoid and manifold.
- DATC module.
- Manual climate control assembly.
- Heater control valve.
- Stuck or bound linkage or door.
- Leaking or plugged vacuum hose.