TROUBLE DIAGNOSES — Diagnostic Procedure 2 (SYMPTOM: Air outlet does not change.) — Mode door motor checks

HA-72flowchartUnverified

Mode-position table values (1 or 2 / 3 or 4 / 5 or 6 / 4 or 6 / 5 or 8) read from the small grid in the figure-A column; F/D and DEF entries are unusual (re-use of pins) and worth re-reading on Pass 2.

Continued from HA-71

Diagnostic Procedure 2

SYMPTOM: Air outlet does not change.

WARNING

Perform PRELIMINARY CHECK 4 and Main Power Supply and Ground Circuit Check before referring to the following flow chart.

Step A — CHECK MODE DOOR MOTOR POSITION SWITCH

1
Turn VENT switch ON with ignition switch at ACC position.
2
Turn ignition switch OFF. Disconnect push control unit connector.
3
Check if continuity exists between terminal No. 1 or 2 of push control unit harness connector and body ground.
4
Using above procedures, check for continuity in any other mode, as indicated in chart.

Step A — mode position vs continuity terminals

Mode switch	Terminal No. (+)	Terminal No. (−)	Continuity
VENT	1 or 2	Body ground	Yes
B/L	3 or 4	Body ground	Yes
FOOT	5 or 6	Body ground	Yes
F/D	4 or 6	Body ground	Yes
DEF	5 or 8	Body ground	Yes

VENT

Terminal No. (+)1 or 2

Terminal No. (−)Body ground

ContinuityYes

B/L

Terminal No. (+)3 or 4

Terminal No. (−)Body ground

ContinuityYes

FOOT

Terminal No. (+)5 or 6

Terminal No. (−)Body ground

ContinuityYes

F/D

Terminal No. (+)4 or 6

Terminal No. (−)Body ground

ContinuityYes

DEF

Terminal No. (+)5 or 8

Terminal No. (−)Body ground

ContinuityYes

Diagnostic Procedure 2 — air outlet does not change (start)

[A] CHECK MODE DOOR MOTOR POSITION SWITCH (per mode/continuity table).

O.K.

CHECK SIDE LINK. Refer to DOOR CONTROL.

N.G.

Disconnect mode door motor harness connector.

[B] CHECK BODY GROUND CIRCUIT FOR MODE DOOR MOTOR. Does continuity exist between mode door motor harness terminal No. 22 and body ground?

O.K.

[C] Check circuit continuity between each terminal on push control unit and on mode door motor (1↔1, 2↔2, … 8↔8).

O.K.

(Go to next page.) — branch A

Step C — push-control-unit terminal vs mode-door-motor terminal continuity

Push control unit terminal	Mode door motor terminal	Continuity
1	1	Yes
2	2	Yes
3	3	Yes
4	4	Yes
5	5	Yes
6	6	Yes
7	7	Yes
8	8	Yes

Mode door motor terminal1

ContinuityYes

Mode door motor terminal2

ContinuityYes

Mode door motor terminal3

ContinuityYes

Mode door motor terminal4

ContinuityYes

Mode door motor terminal5

ContinuityYes

Mode door motor terminal6

ContinuityYes

Mode door motor terminal7

ContinuityYes

Mode door motor terminal8

ContinuityYes

NOTE

If the result is N.G. after checking circuit continuity, repair harness or connector.

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TROUBLE DIAGNOSES — Diagnostic Procedure 2 (SYMPTOM: Air outlet does not change.) — Mode door motor checks

Diagnostic Procedure 2

SYMPTOM: Air outlet does not change.

Step A — CHECK MODE DOOR MOTOR POSITION SWITCH

Step A — mode position vs continuity terminals

Diagnostic Procedure 2 — air outlet does not change (start)

Step C — push-control-unit terminal vs mode-door-motor terminal continuity

See also

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