Manual Temperature Control

B102E - Rear Blend Request Input Circuit Low

For a complete wiring diagram, refer to.






• When Monitored: With the ignition on.

• Set Condition: If the rear blend door driver is out of range towards the low voltage threshold.






• This DTC must be active for the results of this test to be valid. Do not perform this test if this DTC is stored.

Test Step 1 - Check Rear Blend Door Driver Circuit for a Short to Ground






• Turn the ignition OFF.

• Disconnect the A/C heater control C1 harness connector.

• Measure the resistance between ground and the rear blend door driver circuit in the A/C heater control C1 harness connector.

Is the resistance less than 5 ohms?

Yes

• Repair the rear blend door driver circuit for a short to ground.

• Perform the HVAC Verification Test. Refer to => Non-DTC Based Diagnostics. HVAC Verification Test

No

• Go to Test Step 2 => [ Test Step 2 - Check Rear Blend Door Driver Circuit for a Short to
Common Door Driver Circuit ]

Test Step 2 - Check Rear Blend Door Driver Circuit for a Short to Common Door Driver Circuit

• Measure the resistance between the rear blend door driver circuit and the common door driver circuit in the A/C heater control C1 harness connector.

Is the resistance less than 5 ohms?

Yes

• Repair the rear blend door driver circuit for a short to the common door driver circuit.

• Perform the HVAC Verification Test. Refer to => Non-DTC Based Diagnostics. HVAC Verification Test

No

• Go to Test Step 3 => [ Test Step 3 - Check Rear Blend Door Driver Circuit for an Open ]

Test Step 3 - Check Rear Blend Door Driver Circuit for an Open






• Disconnect the rear blend door 6 way harness connector.

• Measure the resistance of the rear blend door driver circuit between the A/C heater control C1 harness connector and the rear blend door 6 way harness connector.

Is the resistance less than 5.0 ohms?

Yes

• Replace the A/C heater control.

• Perform the HVAC Verification Test. Refer to => Non-DTC Based Diagnostics. HVAC Verification Test

No

• Repair the rear blend door driver circuit for an open.

• Perform the HVAC Verification Test. Refer to => Non-DTC Based Diagnostics. HVAC Verification Test