Ambient Sensor And Switch; Vacuum Hose Harness - Pontiac Grand Prix Service Manual

1B-2
1%9
PONTIAC SERVICE MANUAL
BLOWER MOTOR
AMBIENT SENSO
.-a,
HI BLOWER&
H E A T E R DELAY RELAY
Fig. 18-2 Pontiac Automatic Temperature Cot'ttrol
N C Engine Harness
4. Remove retaining screws. 2. To replace reverse removal procedure. When
checking with an ohmmeter, the resistance value of the
5. Remove sensor.
ambient sensor should be approximately 500 ohms at
75°F. The switch should be open at or below 32°F.
6. To replace reverse removal procedure.
GRAND PRlX REMOVE AND REPLACE
When checking with an ohmmeter, the resistance
value of the iiisar sensor should be approximately
1. Remove two wire connectors, Fig. 1 ~ - 3 .
1000 ohms at 75".
2. Remove retaining screws.
AMBIENT SENSOR AND SWITCH
3. Remove sensor and switch assembly.
PONTIAC REMOVE AND REPLACE
VACUUM HOSE HARNESS
ALL REMOVE AND REPLACE
1. Remove ambient sensor wire connector and remove
sensor attaching screws, Fig. 1B-2.
1. Remove cold air distributor duct.