Air Conditioning System

DIAGNOSTIC TROUBLE CODE CHART

B1400/00 - B1428/28:

B1432/32 - B1461/61:

If malfunction code is displayed during the DTC check (sensor check), check the circuit listed for that code in the table.


HINT:
- *1 If the room temp. is approx. -20 °C (-4 °F) of less, DTC B1411/11 maybe output even though the system is normal
- *2 If the ambient temperature is approx. -50 °C (-58 °F) or less, a DTC maybe output even though the system is normal.
- *3 If the check is being performed in a dark place, DTC B1421/21 (solar sensor circuit abnormal) could be displayed. In this case, perform DTC check again while shining a light, such as inspection light, on the solar sensor. If DTC B1421/21 is still displayed, there could be trouble in the solar sensor circuit.
- *4 If the check is being performed in a dark place, DTC B1424/24 (solar sensor circuit abnormal) could be displayed. In this case, perform DTC check again while shining a light, such as inspection light, on the solar sensor. If DTC B1424/24 is still displayed, there could be trouble in the solar sensor circuit.
- *5 Compressor lock (DTC B1422/22 is indicated only for a current malfunction.

To confirm DTC B1422/22, perform the following steps.
1. With the engine ON, enter the DTC check mode.
2. Press the R/F switch to enter actuator check mode, and set the operation to Step No.3.
3. Press the AUTO switch to return to DTC check mode.
4. The DTC is displayed after approx. 3 secs.

- *6 The A/C control assembly memorizes the DTC of the respective malfunction when it occurs for period of time indicated in the brackets.
- *7 If the check is being performed in a dark place DTC B1421/21 (solar sensor circuit abnormal) could be displayed. In this case, perform DTC check again while shining a light, such as inspection light, on the solar sensor. If DTC B1421/21 is still displayed, there could be trouble in the solar sensor circuit.