Recirc Overcurrent (Active)

Test 1:

Tests 2 - 3:

Tests 4 - 6:

Tests 7 - 8:

Test 9:

SYMPTOM
RECIRC OVERCURRENT (ACTIVE) - MTC

TEST NOTE
This symptom is diagnosed using the test BLEND OVERCURRENT (ACTIVE) - MTC.

WHEN MONITORED
When actuator movement is requested.

SET CONDITION
All (Blend, Mode, Recirc, and Zone) Overcurrent DTC's may set if the A/C-Heater Control Module detects an excessive current draw on the door driver circuit(s).

POSSIBLE CAUSES
- Mode door actuator shorted
- Recirculation door actuator shorted
- Passenger blend door actuator shorted
- Driver blend door actuator shorted
- Door driver circuit shorted to ground
- Door driver circuits shorted together
- A/C - heater control module
- Rear blend door actuator shorted
- Rear mode door actuator shorted
- Rear a/c heater unit wiring harness shorted