With Manufacturer's Scan Tool
Checking DTCs by DTC IndicatorNOTE: Before troubleshooting the climate control system, refer to B-CAN System Diagnosis Test Mode A Troubleshooting. Troubleshooting- B-CAN System Diagnosis Test Mode A
To retrieve the DTC, you must run the self-diagnostic function. In the case of multiple problems, the respective indicator segments will come on. If indicator segments A, C, D, E, F, G, I, L, N and AUTO indicator come on at the same time, there may be an open in the common ground wire.
How to Check for DTCs with the HDS
1. Make sure the ignition switch is OFF.
2. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
3. Turn the ignition switch ON (II).
4. Make sure the HDS communicates with the vehicle and the climate control unit. If it doesn't, troubleshoot the DLC circuit.
5. Select HVAC/CLIMATE CONTROL in the BODY ELECTRICAL menu.
6. Select DTCs in the HVAC/CLIMATE CONTROL menu.
7. Check for DTCs. If any DTCs are indicated, write down the DTCs, then go to the indicated DTC troubleshooting. If no DTCs are indicated, refer to symptom troubleshooting. Climate Control
NOTE:
- After troubleshooting, clear the DTCs with the HDS.
- For specific operations, refer to the user's manual that came with the HDS.
Communication circuit self-diagnostic function (EX and EX-L models)
The climate control unit has a communication circuit self-diagnostic function. Perform the following steps to test the communication circuit.
1. Turn the ignition switch OFF, and then ON (II).
2. At the climate control panel, press and hold the OFF button. While holding the OFF button, press the rear window defogger button five times within 10 seconds. Release the OFF button. All the LEDs and LCD segments should blink three times.
- If none of the LEDs or LCD segments blink, go to climate control panel power and ground circuit troubleshooting. Climate Control Panel Power and Ground Circuit Troubleshooting
- If one or more LEDs or LCD segments do not blink, but at least one LED or LCD segment blinks, replace the climate control panel.
- If all LEDs and LCD segments blink, go to step 3.
3. Turn the ignition switch OFF, and then ON (II).
4. At the rear control panel, set the rear fan control dial OFF. The rear temperature control dial to Max Cool, and the rear control dial to select Vent.
5. Press the rear control button five times within 10 seconds. The rear control indicator will come on and then go off. The communication circuit self-diagnostic function will then start. The rear control indicator will blink to indicate any problems.
- If no segment other than segment A lights in the climate control panel and the rear climate control indicator does not blink, the communication circuit is OK.
- If any segment other than segment A lights, and/or the rear control indicator blinks, record the segments and/or blinks, and then go to step 6.
6. Refer to the chart above and perform the appropriate diagnosis for the error indicated by the front fan segments and rear control indicator.
Communication Circuit self-diagnostic Function Test (Touring model)
The climate control unit has a communication circuit self-diagnostic function. Perform the following steps to test the communication circuit.
1. Turn the ignition switch OFF, and then ON (II).
2. At the climate control panel, press and hold the OFF button. While holding the OFF button, press the rear window defogger button five times within 10 seconds. Release the OFF button. All the LEDs and LCD segments should blink three times.
- If none of the LEDs or LCD segments blink, go to climate control panel power and ground circuit troubleshooting. Climate Control Panel Power and Ground Circuit Troubleshooting
- If one or more LEDs or LCD segments do not blink, but at least one LED or LCD segment blinks, replace the climate control panel.
- If all LEDs and LCD segments blink, go to step 3.
3. Turn the ignition switch OFF, and then ON (II).
4. At the rear climate control panel press and hold the OFF button. While holding the OFF button, press the rear button five times within 10 Seconds. Release the OFF button. All the LCD segments should blink three times.
- If none of the LCD segments blink, go to rear climate control panel power and ground circuit troubleshooting. Rear Control Panel Power and Ground Circuit Troubleshooting
- If one or more LCD segments do not blink, but at least one LCD segment does blink, replace the rear climate control panel.
- If all LCD segments blink, go to step 5.
5. Turn the ignition switch OFF, and then ON (II).
6. At the climate control panel, press and hold the fan A button and then the OFF button. While holding both buttons, the fan indicator will light the segment A. If there is any problem in the system, the fan indicator will light corresponding segment (B through E). Record any segments that light and go to step 7.
7. Turn the ignition switch OFF, and then ON (II).
8. At the rear climate control panel, press and hold the rear fan A button and then the OFF button. While holding both buttons, the fan indicator will light the segment A. If there is any problem in the system, the fan indicator will light the corresponding segment (B through E).
- If no segment other than segment A light in either the climate control panel or the rear climate control panel, communication circuit is OK.
- If any segment other than segment A light, record the segments and then go to step 9.
9. Refer to the chart above and perform the appropriate diagnosis for the error indicated by the front and rear fan segments.