Infiniti I30 (A33). Manual — part 299

SEF860Y

Diagnostic Procedure

NHEC0291

1

CHECK ENGINE START

Turn ignition switch “OFF”, and restart engine.
Is engine running?

Yes or No

Yes (With CONSULT-II)

©

GO TO 2.

Yes (Without CONSULT-
II)

©

GO TO 12.

No

©

GO TO 3.

2

SEARCH FOR MALFUNCTIONING CIRCUIT

With CONSULT-II

1. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-II.
2. Search for circuit which does not produce a momentary engine speed drop.

SEF070Y

©

GO TO 12.

GI

MA

EM

LC

FE

AT

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

DTC P1320 IGNITION SIGNAL

Wiring Diagram (Cont’d)

EC-511

3

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I

1. Turn ignition switch ON.
2. Check voltage between ECM terminals 110, 112 and ground with CONSULT-II or tester.

SEF366X

OK or NG

OK

©

GO TO 4.

NG

©

Go to TROUBLE DIAGNOSIS FOR POWER SUPPLY, EC-145.

4

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II

1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.

SEF275X

3. Turn ignition switch ON.
4. Check voltage between condenser terminal 1 and ground with CONSULT-II or tester.

SEF367X

OK or NG

OK

©

GO TO 10.

NG

©

GO TO 5.

DTC P1320 IGNITION SIGNAL

Diagnostic Procedure (Cont’d)

EC-512

5

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III

1. Turn ignition switch OFF.
2. Disconnect ECM relay.

SEC003C

3. Check harness continuity between ECM relay terminal 7 and condenser 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

©

GO TO 6.

6

DETECT MALFUNCTIONING PART

Check the following.

I

Harness connectors F18, E15

I

Harness for open or short between ECM relay and condenser

©

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

7

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-IV

Check voltage between ECM relay terminal 6 and ground with CONSULT-II or tester.

SEF368X

OK or NG

OK

©

GO TO 9.

NG

©

GO TO 8.

8

DETECT MALFUNCTIONING PART

Check the following.

I

15A fuse

I

Harness for open and short between ECM relay and fuse

©

Repair or replace harness or connectors.

GI

MA

EM

LC

FE

AT

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

DTC P1320 IGNITION SIGNAL

Diagnostic Procedure (Cont’d)

EC-513

9

CHECK ECM RELAY

1. Apply 12V direct current between ECM relay terminals 1 and 2.
2. Check continuity between ECM relay terminals 3 and 5, 6 and 7.

SEF296X

OK or NG

OK

©

GO TO 17.

NG

©

Replace ECM relay.

10

CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.
2. Check harness continuity between condenser terminal 2 and engine ground. Refer to Wiring Diagram.

Continuity should exist.

3. Also check harness for short to power.

OK or NG

OK

©

GO TO 11.

NG

©

Repair open circuit or short to power in harness or connectors.

11

CHECK CONDENSER

Check resistance between condenser terminals 1 and 2.

SEF369X

OK or NG

OK

©

GO TO 12.

NG

©

Replace condenser.

DTC P1320 IGNITION SIGNAL

Diagnostic Procedure (Cont’d)

EC-514

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Политика конфиденциальности