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HEATING & A/C
Symptom:
*ATC TEMPERATURE CONTROL INCORRECT IN SUN/SHADE
BODY CONTROL MODULE
SUN SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
BODY CONTROL MODULE
SUN SENSOR OPEN OR HIGH
SENSOR GROUND CIRCUIT OPEN
SUN SENSOR SIGNAL CIRCUIT OPEN
BODY CONTROL MODULE - SUN SENSOR OPEN OR HIGH
TEST
1
Perform the *ATC System Test found in the Heating & A/C Category. Repair all
Diagnostic Trouble Codes found while performing this test.
Verify that the symptom ATC Temperature Control Incorrect In Sun/Shade is still
present.
Is the symptom still present?
Yes → Go To 2
→ Test Complete.
No
2
Turn the ignition off.
Disconnect the Sun Sensor/VTSS LED harness connector.
Turn the ignition on.
With the DRBIII in Sensor Display, read the Sun Sensor voltage.
Is the voltage below 4.8 volts?
Yes → Replace and program the Body Control Module in accordance
→ Go To 3
No
3
Turn the ignition off.
Disconnect the Sun Sensor/VTSS LED harness connector.
Turn the ignition on.
Measure the voltage of the Sun Sensor Signal circuit.
Is the voltage above 5.2 volts?
Yes → Go To 4
→ Go To 5
No
POSSIBLE CAUSES
ACTION
with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
332
APPLICABILITY
All
All
All
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