Nissan Silvia. Manual — part 165

Wiring Diagram

NMEC0753

TEC814

GI

MA

EM

LC

FE

CL

MT

AT

PD

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

INTAKE VALVE TIMING CONTROL SOLENOID VALVE

Wiring Diagram

EC-175

Diagnostic Procedure

NMEC0754

1

INSPECTION START

Do you have CONSULT-II?

Yes or No

Yes

©

GO TO 2.

No

©

GO TO 3.

2

CHECK OVERALL FUNCTION

With CONSULT-II

1. Turn ignition switch “ON”.
2. Select “VALVE TIMING SOL” in “ACTIVE TEST” mode with CONSULT-II.
3. Touch “ON” CONSULT-II screen.

SEC437C

4. Check for operating sound of the intake valve timing control solenoid valve.

Clicking noise should be heard.

OK or NG

OK

©

INSPECTION END

NG

©

GO TO 4.

3

CHECK OVERALL FUNCTION

Without CONSULT-II

1. Lift up vehicle, start engine and warm it up to normal operation temperature.
2. Shift to a suitable gear position other than “P” or “N” position.
3. Check voltage between ECM terminal 105 (Intake valve timing control solenoid valve signal) and ground under the fol-

lowing conditions.

SEC438C

OK or NG

OK

©

INSPECTION END

NG

©

GO TO 4.

INTAKE VALVE TIMING CONTROL SOLENOID VALVE

Diagnostic Procedure

EC-176

4

CHECK POWER SUPPLY

1. Turn ignition switch “OFF”.
2. Disconnect intake valve timing control solenoid valve harness connector.

SEC385C

3. Turn ignition switch “ON”.
4. Check voltage between terminal 2 and ground with CONSULT-II or tester.

SEC439C

OK or NG

OK

©

GO TO 6.

NG

©

GO TO 5.

5

DETECT MALFUNCTIONING PART

Check the following.

I

Harness connector F4, M60

I

10A fuse

I

Harness for open or short between valve timing control solenoid valve and fuse

©

Repair harness or connectors.

6

CHECK OUTPUT SIGNAL CIRCUIT

1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 105 and intake valve timing control solenoid valve harness connector

terminal 1. Refer to wiring diagram.

Continuity should exist.

4. Also check harness for short to ground and short to power.

OK or NG

OK

©

GO TO 7.

NG

©

Repair open circuit or short to ground to short to power or connectors.

GI

MA

EM

LC

FE

CL

MT

AT

PD

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

INTAKE VALVE TIMING CONTROL SOLENOID VALVE

Diagnostic Procedure (Cont’d)

EC-177

7

CHECK VALVE TIMING CONTROL SOLENOID VALVE

Refer to “Component Inspection”, EC-178.

OK or NG

OK

©

GO TO 8.

NG

©

Replace valve timing control solenoid valve.

8

CHECK INTERMITTENT INCIDENT

Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-82.

©

INSPECTION END

SEC440C

Component Inspection

NMEC0755

INTAKE VALVE TIMING CONTROL SOLENOID VALVE

NMEC0755S01

1.

Check oil passage visually for any metal debris.

2.

Supply intake valve timing control solenoid valve terminals with
battery voltage.

3.

Make sure that inside plunger protrudes.
If NG, replace intake valve timing control solenoid valve.

INTAKE VALVE TIMING CONTROL SOLENOID VALVE

Diagnostic Procedure (Cont’d)

EC-178