Infiniti Q45 (FY33). Manual - part 221

 

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Infiniti Q45 (FY33). Manual - part 221

 

 

SEF268Y

DIAGNOSTIC TROUBLE CODE CONFIRMATION
PROCEDURE

TESTING CONDITION:

I

If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PRO-
CEDURE” has been previously conducted, always turn
ignition switch “OFF” and wait at least 5 seconds before
conducting the next test.

1) Turn ignition switch “ON”.
2) Select “DATA MONITOR” mode with CONSULT-II and

wait at least 5 seconds.

3) If 1st trip DTC is detected, go to “DIAGNOSTIC

PROCEDURE”, EC-415.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Follow the procedure “With CONSULT-II” above.

GI

MA

EM

LC

FE

AT

PD

FA

RA

BR

ST

RS

BT

HA

EL

IDX

TROUBLE DIAGNOSIS FOR DTC P1400

EGRC-solenoid Valve (Cont’d)

EC-413

TEC068M

TROUBLE DIAGNOSIS FOR DTC P1400

EGRC-solenoid Valve (Cont’d)

EC-414

SEF431U

SEF798W

DIAGNOSTIC PROCEDURE

INSPECTION START

CHECK POWER SUPPLY.
1. Disconnect EGRC-solenoid valve har-

ness connector.

2. Turn ignition switch “ON”.
3. Check voltage between terminal

q

1

and

ground with CONSULT-II or tester.
Voltage: Battery voltage

OK

E

NG

Check the following.

I

Harness connectors

F63

,

M49

I

Harness connectors

F80

,

F126

I

10A fuse

If NG, repair harness or
connectors.

CHECK OUTPUT SIGNAL CIRCUIT.
1. Disconnect ECM harness connector.

2. Check harness continuity between ECM

terminal

q

10

and terminal

q

2

.

Continuity should exist.
If OK, check harness for short to ground
and short to power.

OK

E

NG

Check the following.

I

Harness connectors

F126

,

F80

If NG, repair open circuit or
short to ground or short to
power in harness or con-
nectors.

CHECK COMPONENT
(EGRC-solenoid valve).
Refer to “COMPONENT INSPECTION”
below.

OK

E

NG

Replace EGRC-solenoid
valve.

Perform “TROUBLE DIAGNOSIS FOR
INTERMITTENT INCIDENT”, EC-117.

INSPECTION END

GI

MA

EM

LC

FE

AT

PD

FA

RA

BR

ST

RS

BT

HA

EL

IDX

TROUBLE DIAGNOSIS FOR DTC P1400

EGRC-solenoid Valve (Cont’d)

H

H

H

H

H

EC-415

SEF799X

MEC488B

EGRC-solenoid valve

Check air passage continuity.

Perform “EGRC SOLENOID VALVE” in “ACTIVE TEST”
mode.

Condition

EGRC SOLENOID VALVE

Air passage

continuity

between

q

A

and

q

B

Air passage

continuity

between

q

A

and

q

C

ON (FLOW)

Yes

No

OFF (CUT)

No

Yes

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ OR ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Check solenoid valve, following the table as shown below:

Conditions

Air passage

continuity

between

q

A

and

q

B

Air passage

continuity

between

q

A

and

q

C

12V direct current supply
between terminals

q

1

and

q

2

Yes

No

No supply

No

Yes

If NG or operation takes more than 1 second, replace the
solenoid valve.

TROUBLE DIAGNOSIS FOR DTC P1400

EGRC-solenoid Valve (Cont’d)

EC-416

 

 

 

 

 

 

 

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