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Symptom:
DRIVER BLEND DOOR TRAVEL TOO SMALL (ACTIVE)
When Monitored and Set Condition:
DRIVER BLEND DOOR TRAVEL TOO SMALL (ACTIVE)
When Monitored: With the ignition on and the IOD fuse installed.
Set Condition: The Automatic Temperature Control (ATC) monitors the door's range of
travel during system initialization. If the measured range is less than expected, the DTC
will set.
DRIVER BLEND DOOR NOT RESPONDING DTC SET
AUTOMATIC TEMPERATURE CONTROL (ATC)
OBSTRUCTED BLEND DOOR
DRIVER BLEND DOOR ACTUATOR
TEST
1
Turn the ignition on.
With the DRBIII , read the active ATC DTCs.
Does the DRBIII display: DRIVER BLEND DOOR NOT RESPONDING?
Yes → Return to the Heating & A/C symptom list and choose the
→ Go To 2
No
2
Turn the ignition off.
Disconnect the Driver Blend Door Actuator harness connector.
Connect a 12-volt Test Light between the Driver Blend Door Actuator harness
connector cavities.
Turn the ignition on.
While monitoring the test light, press the DRIVER BLEND mode switch to change
the temp setting from lo to hi.
NOTE: Observe test light for approximately 30 seconds.
Does the test light start to flash and stay flashing?
Yes → Go To 3
→ Replace the Automatic Temperature Control (ATC) in accordance
No
POSSIBLE CAUSES
ACTION
symptom.
Perform BODY VERIFICATION TEST - VER 1.
with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
517
HEATING & A/C
APPLICABILITY
All
All
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