TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the A/C - Heater Control Module C1 harness connector.
Disconnect the Rear Blower Rear Control Switch C2 harness connector.
Measure the resistance of the 5 Volt Supply circuit between the A/C - Heater Control
Module C1 harness connector and the Rear Blower Rear Control Switch C2 harness
connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 4
No
→ Repair the 5 Volt Supply circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Disconnect the A/C - Heater Control Module C1 harness connector.
Disconnect the Rear Blower Rear Control Switch C2 harness connector.
Measure the resistance between ground and the Rear Temperature Feedback Signal
circuit.
Is the resistance above 100K ohms?
All
Yes
→ Go To 5
No
→ Repair the Rear Temperature Feedback Signal circuit for a short
to ground.
Perform BODY VERIFICATION TEST - VER 1.
5
Turn the ignition off.
Disconnect the A/C - Heater Control Module C1 harness connector.
Disconnect the Rear Blower Rear Control Switch C2 harness connector.
Measure the resistance between the Rear Temperature Feedback Signal circuit and
the Rear Temperature Return circuit.
Is the resistance above 100K ohms?
All
Yes
→ Go To 6
No
→ Repair the Rear Temperature Feedback Signal circuit for a short
to the Rear Temperature Return circuit.
Perform BODY VERIFICATION TEST - VER 1.
6
Turn the ignition off.
Make sure that the A/C - Heater Control Module C1 harness connector is connected
to the A/C - Heater Control Module.
Disconnect the Rear Blower Rear Control Switch C2 harness connector.
Turn the ignition on.
With the DRBIII
t, read active HVAC DTCs.
Does the DRBIII
t display: Rear Blend Pot Circuit Short?
All
Yes
→ Replace the A/C - Heater Control Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Rear Blower Rear Control Switch in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
681
HEATING & A/C
REAR BLEND POT CIRCUIT SHORT (ACTIVE) - MTC —
Continued