Nissan Silvia. Manual — part 277

Mode Door

TROUBLE DIAGNOSIS PROCEDURE FOR MODE DOOR

=NMHA0142

Symptom:

I

Air outlet does not change.

Inspection Flow

ZHA047H

*1: HA-61
*2: HA-28

*3: HA-27
*4: HA-17

*5: HA-60

GI

MA

EM

LC

EC

FE

CL

MT

AT

PD

AX

SU

BR

ST

RS

BT

SC

EL

IDX

TROUBLE DIAGNOSES

Mode Door

HA-59

DIAGNOSTIC PROCEDURE

=NMHA0260

SYMPTOM:

I

Mode door motor does not operate normally.

1

CHECK POWER SUPPLY FOR A/C CONTROL UNIT

Refer to “MAIN POWER SUPPLY AND GROUND CIRCUIT CHECK”, HA-31.

OK or NG

OK

©

GO TO 2.

NG

©

Repair or replace.

2

CHECK FOR OUTPUT OF A/C CONTROL UNIT

Are there approx. 12 volts between mode door motor harness connector M28 terminal No. 7 (G/OR), 8 (G/Y) and body
ground?

ZHA048H

Yes or No

Yes

©

Disconnect mode door motor and A/C control unit connector. GO TO 4.

No

©

Disconnect mode door motor and A/C control unit connector. GO TO 3.

3

CHECK CIRCUIT CONTINUITY BETWEEN MODE DOOR MOTOR AND A/C CONTROL UNIT

Check circuit continuity between mode door motor harness connector M28 terminal No. 7 (G/OR), 8 (G/Y) and A/C control
unit harness connector M32 terminal No. 17 (G/Y), 25 (G/OR).

ZHA049H

Continuity should exist.

If OK, check harness for short.

OK or NG

OK

©

Replace A/C control unit.

NG

©

Repair harness or connector.

TROUBLE DIAGNOSES

Mode Door (Cont’d)

HA-60

4

CHECK CIRCUIT CONTINUITY BETWEEN MODE DOOR MOTOR AND A/C CONTROL UNIT

Check circuit continuity between mode door motor harness connector M28 terminal No. 1 (B/W), 2 (R/G), 3 (L/R), 4 (L/W),
5 (L/B), 6 (L) and A/C control unit harness connector M32 terminal No. 18 (R/G), 19 (L/W), 20 (L), 26 (B/W), 27 (L/R), 28
(L/B).

ZHA050H

Continuity should exist.

If OK, check harness for short.

OK or NG

OK

©

Replace air mix door motor.

NG

©

Repair harness or connector.

ZHA051H

CONTROL LINKAGE ADJUSTMENT

NMHA0151

Mode Door

NMHA0151S01

1.

Install mode door motor on heater unit and connect it to main
harness.
Make sure lever of mode door motor is fitted into the slit of
mode door link.

2.

Turn ignition switch to ON.

3.

Turn VENT switch ON.

4.

Turn DEF switch ON. Check that slide link operates at the full-
open position. Also turn DEF switch ON to check that slide link
operates at the fully-open position.

GI

MA

EM

LC

EC

FE

CL

MT

AT

PD

AX

SU

BR

ST

RS

BT

SC

EL

IDX

TROUBLE DIAGNOSES

Mode Door (Cont’d)

HA-61

Bi-Level Door

TROUBLE DIAGNOSIS PROCEDURE FOR BI-LEVEL DOOR

=NMHA0274

Symptom:

I

Bi-level door motor does not operate normally.

Inspection Flow

ZHA052H

*1: HA-64
*2: HA-28

*3: HA-27
*4: HA-17

*5: HA-63

TROUBLE DIAGNOSES

Bi-Level Door

HA-62