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 Rear Temperature Feedback Signal 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
→ Replace the A/C - Heater Control Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Rear Temperature Feedback Signal 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 the 5 Volt Supply circuit and the Rear Temperature
Feedback Signal circuit.
Is the resistance above 100K ohms?
All
Yes
→ Go To 5
No
→ Repair the 5 Volt Supply circuit for a short to the Rear Temper-
ature Feedback Signal circuit.
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 of the Rear Temperature Return 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 6
No
→ Repair the Rear Temperature Return circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
552
HEATING & A/C
REAR BLEND POT CIRCUIT OPEN (ACTIVE) - MTC —
Continued