Nissan Silvia. Manual - part 281

ZHA072H

Dual-pressure Switch

=NMHA0279S03

Terminals

High-pressure side line

pressure

kPa (kg/cm

2

, psi)

Operation

Continuity

Low-pres-

sure side

1 - 2

Increasing to

157 - 216

(1.6 - 2.2, 23 - 31)

ON

Exists.

Decreasing to

152.0 - 201.0

(1.55 - 2.05, 22.0 - 29.2)

OFF

Does not

exist.

High-pres-

sure side

1 - 2

Decreasing to

1,373 - 1,765

(14 - 18, 199 - 256)

ON

Exists

Increasing to

2,648 - 2,844

(27 - 29, 384 - 412)

OFF

Does not

exist.

SHA471F

A/C Relay

NMHA0279S04

Check continuity between terminal Nos. 3 and 5.

Conditions

Continuity

12V direct current supply between terminal Nos. 1
and 2

Yes

No current supply

No

If NG, replace relay.

GI

MA

EM

LC

EC

FE

CL

MT

AT

PD

AX

SU

BR

ST

RS

BT

SC

EL

IDX

TROUBLE DIAGNOSES

Magnet Clutch (Cont’d)

HA-75

Noise

TROUBLE DIAGNOSIS PROCEDURE FOR NOISE

=NMHA0080

Symptom:

I

Noise

Inspection Flow

SHA336FA

*1: HA-82
*2: HA-84

*3: HA-79

*4: EM-16

TROUBLE DIAGNOSES

Noise

HA-76

HFC-134a (R-134a) Service Procedure

NMHA0094

SETTING OF SERVICE TOOLS AND EQUIPMENT

NMHA0094S01

Discharging Refrigerant

NMHA0094S0101

WARNING:

Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Use only approved recovery/recycling equipment to discharge HFC-134a (R-134a) refrigerant.
If accidental system discharge occurs, ventilate work area before resuming service. Additional health
and safety information may be obtained from refrigerant and lubricant manufacturers.

SHA539DE

Evacuating System and Charging Refrigerant

NMHA0094S0102

SHA540DC

GI

MA

EM

LC

EC

FE

CL

MT

AT

PD

AX

SU

BR

ST

RS

BT

SC

EL

IDX

SERVICE PROCEDURE

HFC-134a (R-134a) Service Procedure

HA-77

SHA386FA

*1: HA-79
*2: HA-91

*3: HA-92

*4: HA-44

SERVICE PROCEDURE

HFC-134a (R-134a) Service Procedure (Cont’d)

HA-78