DTC DETECTION LOGIC

DTC | Items (CONSULT‐III screen terms) | Diagnostic item is detected when... | Possible cause
B263D | FRE DOOR FAIL | When the malfunctioning intake door position is detected at FRE position |

- Intake door motor (PBR internal circuit is open or shorted)
- A/C auto amp.
- Harness and connector
  (LAN communication line is open or shorted)

B263E | 20P FRE DOOR FAIL | When the malfunctioning intake door position is detected at 20%FRE position
B263F | REC DOOR FAIL | When the malfunctioning intake door position is detected at REC position

DTC CONFIRMATION PROCEDURE
1.PERFORM SELF-DIAGNOSIS
With CONSULT-III

1. Perform the “SELF-DIAGNOSIS”.
2. Check if any DTC is detected in the self-diagnostic results.

NOTE：
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to DTC Logic or DTC Logic.
Is DTC “B263D”, “B263E” or “B263F” displayed?
YES>>Perform the diagnosis of intake door motor system. Refer to Diagnosis Procedure.
NO>>GO TO 2.
2.FUNCTION INSPECTION

1. Press REC switch to set the air outlet to recirculation.
2. The REC switch indicator turns on.
3. Listen to intake sound and confirm air inlets change.
4. Press FRE switch to set the air outlet to fresh air intake.
5. The FRE switch indicator turns on.
6. Listen to intake sound and confirm air inlets change.

Does it operate normally?
YES>>INSPECTION END
NO>>Check the intake door system installation condition. Repair or replace the malfunctioning parts.