Infiniti M35/M45 Y50. Manual - part 139

 

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Infiniti M35/M45 Y50. Manual - part 139

 

 

TROUBLE DIAGNOSIS

ATC-107

C

D

E

F

G

H

I

K

L

M

A

B

ATC

2. 

CHECK ECV CONTROL SIGNAL

1.

Turn ignition switch OFF.

2.

Reconnect compressor (ECV) connector.

3.

Perform self-diagnosis. Refer to 

ATC-56, "Self-diagnosis Func-

tion"

 .

4.

Set in self-diagnosis STEP-4 (Code No. 45). Refer to 

ATC-57,

"FUNCTION CONFIRMATION PROCEDURE"

 .

5.

Confirm ECV control signal between unified meter and A/C amp.
harness connector M65 terminal 65 and ground using an oscillo-
scope.

OK or NG

OK

>> Replace compressor.

NG

>> GO TO 3.

3. 

CHECK CIRCUIT CONTINUITY BETWEEN ECV AND UNIFIED METER AND A/C AMP.

1.

Turn ignition switch OFF.

2.

Disconnect compressor (ECV) and unified meter and A/C amp.
connector.

3.

Check continuity between compressor (ECV) harness connector  
F34 terminal 3 and unified meter and A/C amp. harness connec-
tor M65 terminal 65.

OK or NG

OK

>> GO TO 4.

NG

>> Repair harness or connector.

4. 

CHECK ECV

Check continuity between compressor (ECV) connector  F34 termi-
nals 2 and 3.

OK or NG

OK

>> Replace unified meter and A/C amp.

NG

>> Replace compressor.

RJIA4082E

SJIA1765E

3 – 65

: Continuity should exist.

RJIA4083E

2 – 3

: Continuity should exist.

RJIA3523E

TROUBLE DIAGNOSIS

ATC-109

C

D

E

F

G

H

I

K

L

M

A

B

ATC

Noise

NJS000GX

SYMPTOM: Noise

INSPECTION FLOW

SJIA0843E

 

 

 

 

 

 

 

Content   ..  137  138  139  140   ..