DTC DETECTION LOGIC

DTC | Items (CONSULT‐III screen terms) | Diagnostic item is detected when... | Possible cause
B2636 | DR VENT DOOR FAIL | When the malfunctioning door position is detected at VENT position |

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

B2637 | DR B/L DOOR FAIL | When the malfunctioning door position is detected at B/L position
B2638 | DR D/F1 DOOR FAIL | When the malfunctioning door position is detected at FOOT position
B2639 | DR DEF DOOR FAIL | When the malfunctioning door position is detected at DEF position
B2654 | D/F2 DOOR FAIL | When the malfunctioning door position is detected at D/F position
B2655 | B/L2 DOOR FAIL | When the malfunctioning door position is detected at B/L2 position

DTC CONFIRMATION PROCEDURE
1.PERFORM SELF-DIAGNOSIS

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 “B2636”, “B2637”, “B2638”, “B2639”, “B2654” or “B2655” displayed?
YES>>Perform the diagnosis of mode door motor system. Refer to Diagnosis Procedure.
NO>>GO TO 2.
2.FUNCTION INSPECTION

1. Operate MODE switch and DEF switch.
2. Check that the air outlets change according to each indicated air outlet by placing a hand in front of the outlets. Refer to System Description.

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