Infiniti QX4 (R50). Manual — part 473



RHA593F

COMPONENT DESCRIPTION

NBHA0057

The intake door motor is attached to the intake unit. It rotates so
that air is drawn from inlets set by the auto amplifier. Motor rota-
tion is conveyed to a lever which activates the intake door.

RHA502GA

DIAGNOSTIC PROCEDURE

NBHA0058

SYMPTOM: Intake door motor does not operate normally.

I

Perform Self-diagnosis STEP 1 before referring to the flow
chart.

1

CHECK BODY GROUND CIRCUIT FOR INTAKE DOOR MOTOR

Does continuity exist between intake door harness terminal No. 1 and body ground?

RHA492G

Yes or No

Yes

©

GO TO 2.

No

©

Repair harness or connector.

TROUBLE DIAGNOSES

Intake Door Motor (Cont’d)

HA-90

2

CHECK FOR AUTO AMP. OUTPUT

Set up Self-diagnosis STEP 4.
Measure voltage across auto amp. harness terminals and body ground.

RHA821H

MTBL0466

OK or NG

OK

©

INSPECTION END

NG

©

GO TO 3.

GI

MA

EM

LC

EC

FE

AT

TF

PD

AX

SU

BR

ST

RS

BT

SC

EL

IDX

TROUBLE DIAGNOSES

Intake Door Motor (Cont’d)

HA-91

3

CHECK CIRCUIT CONTINUITY BETWEEN AUTO AMP. AND INTAKE DOOR MOTOR

Check circuit continuity between each terminal on auto amp. and on intake door motor.

RHA822H

MTBL0510

Continuity should exist.

If OK, check harness for short.

OK or NG

OK

©

GO TO 4.

NG

©

Repair harness or connector.

TROUBLE DIAGNOSES

Intake Door Motor (Cont’d)

HA-92

4

CHECK FOR AUTO AMP. OUTPUT

Set up Self-diagnosis STEP 4.
Measure voltage across auto amp. harness terminals and body ground.

RHA823H

MTBL0468

OK or NG

OK

©

Replace intake door motor.

NG

©

Replace auto amp.

GI

MA

EM

LC

EC

FE

AT

TF

PD

AX

SU

BR

ST

RS

BT

SC

EL

IDX

TROUBLE DIAGNOSES

Intake Door Motor (Cont’d)

HA-93

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Текст

Политика конфиденциальности