HVAC DTC Troubleshooting: 1 | 2012-2016 CR-V RM1/RM4,RE5/RE6 HONDA CR-V Service Manual

1.

Problem verification:

Problem verification

?1.	Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

?2.	Do the Self-Diagnostic Function with the HVAC control unit.

?3.	Check for DTCs.

Is DTC 1 indicated?


	YES

Go to step 2.


	NO

Intermittent failure. Check for loose wires or poor connections on the air mix control motor circuit.?

2.

Determine possible failure area (AMD P DR/AMD-P line, others):

Determine possible failure area (AMD P DR/AMD-P line, others)

?1.	Turn the vehicle to the OFF (LOCK) mode.

?2.

Disconnect the following connector.

Air mix control motor 7P connector

?3.	Turn the vehicle to the ON mode.

?4.

Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
Test condition	Air mix control motor 7P connector: disconnected
Test point 1	Air mix control motor 7P connector No. 2
Test point 2	Body ground

Is there about 5 V?


	YES

The AMD P DR/AMD-P wire is OK. Go to step 3.


	NO

Go to step 4.

3.

Open wire check (SENSOR COM/SENS-COM line):

Open wire check (SENSOR COM/SENS-COM line)

?1.

Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
Test condition	Air mix control motor 7P connector: disconnected
Test point 1	Air mix control motor 7P connector No. 1
Test point 2	Air mix control motor 7P connector No. 2

Is there about 5 V?


	YES

The SENSOR COM/SENS-COM wire is OK. Replace the air mix control motor.?


	NO

Repair an open in the wire between the HVAC control unit and the air mix control motor.?

4.

Open wire check (AMD P DR/AMD-P line):

Open wire check (AMD P DR/AMD-P line)

?1.

Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
Test condition	Air mix control motor 7P connector: disconnected
Test point 1	HVAC control unit 32P connector No. 22
Test point 2	Body ground

Is there about 5 V?


	YES

Repair an open in the wire between the HVAC control unit and the air mix control motor.?


	NO

The AMD P DR/AMD-P wire is OK. Replace the HVAC control unit.?