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Conditions for Setting the DTC

WARNING: This page is about a different car, the 2008 Suzuki Swift +, 2008 Pontiac Wave, and 2008 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.

This code will set if the output of the mix door indicator indicates that the door opening angle is out of range or does not change value when the door should be moving. This would indicate a short circuit or an open in the sensor or the associated wiring harness, a door motor that is not operating, or a malfunction of the automatic temperature control (ATC) controller.

Step Action Value(s) Yes No
1
  1. Disconnect the instrument panel (I/P) wiring harness connector from the air mix door (AMD) motor.
  2. Use an ohmmeter to measure the resistance between terminals 5 and 7 on the hatchback or 1 and 2 on the notchback on the AMD motor.
Does the measured resistance indicate an open or a shorted condition?		 open=∞, short= 0Ω Go to Step 4  Go to Step 2 
2 Measure the voltage between terminals 2 and 3 on the hatchback or 1 and 2 on the notchback on the AMD motor.
Is the resistance measured equal to the specified value?		 13.5 v Go to Step 3  Go to Step 4 
3 Measure the resistance between terminals 6 and 2 and between terminals 6 and 3 on the AMD motor for the hatchback or measure the voltage between terminals 3 of the AMD and terminal A15 on the ATC for the notchback.
Do these measurements equal to the values specified?		 3000 Ω for the hatchback or 6.0 ± 0.5v for the notchback Go yo Step 5  Go to Step 4 
4 Replace the AMD motor.
Did you complete the replacement?		 - System OK -
5 Inspect the connector terminals at the AMD motor and the wiring in the ATC harness.
Is there a problem with any terminal on either the harness connector or the motor connector or the wiring?		 - Go to Step 6  Go to Step 7 
6 Repair the problem found with a connector terminal or the wiring, or replace the motor as required.
Did you find and correct the condition?		 - System OK -
7
  1. Remove the ATC controller from the instrument panel.
  2. Disconnect the harness connectors from the ATC controller.
  3. Inspect the connector terminals on the harness connectors and the controller connectors and the harness wiring.
Is there a problem with any of these connectors or the wiring?		 - Go to Step 8  Go to Step 9 
8 Repair the problem found with a connector terminal or wiring.
Did you complete the repair?		 - System OK -
9 Measure continuity in the harness between the controller connectors and the following AMD motor connectors:
  • Controller terminal A2 to motor terminal 7
  • Controller terminal A8 to motor terminal 5
  • Controller terminal B6 to motor terminal 2
  • Controller terminal B5 to motor terminal 6
  • Controller terminal B4 to motor terminal 3

For the hatchback or the following continuity checks for the notchback.
  • Controller terminal B8 to motor terminal 1.
  • Controller terminal A15 to motor terminal 3.

Does the continuity equal the specified value?		 0 Ω Go to Step 10  Go to Step 11 
10 Repair the continuity problem.
Did you complete the repair?		 - System OK -
11
  1. Connect the AMD motor to the ATC harness.
  2. Connect the ATC harness connectors to the controller.
  3. Turn the ignition to ON.
  4. Use backprobing for voltage measurements.
  5. Measure the voltage between ground and terminal B5 at the controller.
Is the voltage measured less than or equal to the specified value?		 4 V Go to Step 12  Go to Step 14 
12
  1. Set the temperature controller to 18°C (64°F).
  2. Connect a voltmeter between ground and terminal A8 at the controller. It should display about 12 V.
  3. Raise the temperature setting on the controller to 32°C (90°F).
Does the voltage equal the specified value?		 12 V to 0 V Go to Step 13  Go to Step 15 
13
  1. Connect a voltmeter between ground and terminal A2 at the controller. It should display about 12 V.
  2. Change the temperature setting to 18°C (64°F).
Does the voltage equal the specified value?		 12 V to 0 V Go to Step 20  Go to Step 15 
14
  1. Inspect the wiring harness and the connector terminals associated with controller terminals B4, B5, and B6, and AMD motor terminals 2, 6, and 3.
  2. Repair any problem found.
Did you complete the repair?		 - System OK -
15 Inspect all wiring circuits between the controller and the AMD motor.
Is there a problem in the wiring or the connectors?		 - Go to Step 16  Go to Step 17 
16 Repair the condition in the wiring between the ATC controller and the AMD motor.
Did you complete the repair?		 - System OK -
17 Inspect the AMD motor.
Is there a problem in the AMD motor?		 - Go to Step 18  Go to Step 19 
18 Replace the AMD motor.
Did you complete the replacement?		 - System OK -
19 Replace the controller.
Did you complete the replacement?		 - System OK -
20 Observe the operation of the air mix door when the temperature setting is changed.
Does the door move normally?		 - Go to Step 22  Go to Step 21 
21 Repair or replace the air mix door.
Did you find and correct the condition?		 - System OK -
22 Observe the operation of the AMD motor when the temperature setting is changed.
Does the motor operate normally?		 - Go to Step 24  Go to Step 23 
23 Replace the AMD motor.
Did you complete the replacement?		 - System OK -
24 Connect everything and test the system.
Does DTC 4 reset?		 - Go to Step 25  System OK
25 Replace the controller.
Did you complete the replacement?		 - System OK -
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