Infiniti Q45. Manual - part 206

REMOTE KEYLESS ENTRY SYSTEM

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Check Horn Circuit

NIS000UW

1. 

CHECK HORN CHIRP FUNCTION

With CONSULT

−

II

1.

Check horn function “HORN” in“ACTIVE TEST” mode with CONSULT

−

II.

2.

Perform operation shown on display.

Without CONSULT

−

II

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Apply ground to BCM connector E204 terminal 127. 

OK or NG

OK

>> Horn alarm is OK.

NG

>> GO TO 2.

2. 

CHECK HORN RELAY

Check horn relay condition.

OK or NG

OK

>> GO TO 3.

NG

>> Replace horn relay.

3. 

CHECK POWER SUPPLY FOR HORN RELAY

1.

Turn ignition switch OFF.

2.

Disconnect horn relay connector.

3.

Check voltage between horn relay connector E3-5 terminal 2 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Check the following.

●

15A fuse [No. 56, located in the fuse, fusible link and
relay block (J/B)]

●

Harness for open or short between horn relay and
fuse

Horn should sound.

SEL945W

Horn should sound.

PIIA0359E

2 – Ground

: Battery voltage.

PIIA3248E

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REMOTE KEYLESS ENTRY SYSTEM

4. 

CHECK HORN RELAY CIRCUIT

1.

Disconnect BCM connector.

2.

Check continuity between BCM connector E204 terminal 127and horn relay connector E3-5 terminal 1.

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace harness.

5. 

CHECK HORN RELAY CIRCUIT

1.

Disconnect horn relay and horn high or low connector.

2.

Check continuity between horn relay connector E3-5 terminal 3 and horn connector E43 (low), E63 (high)
terminal 1.

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace harness.

6. 

CHECK HORN AND HORN GROUND

Apply battery voltage to horn terminal 1.

OK or NG

OK

>> Replace BCM.

NG

>> Replace horn or repair horn ground.

127 (G/W) – 1 (G/W)

: Continuity should exist.

PIIA3246E

LOW

3 – 1 (G)

:Continuity should exist.

HIGH

3 – 1 (G/OR)

:Continuity should exist.

PIIA3247E

Horn should sound.

REMOTE KEYLESS ENTRY SYSTEM

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Check Hazard Reminder Operation

NIS000UX

1. 

CHECK BCM OUTPUT SIGNAL

1.

Remove electronic key from ignition key cylinder.

2.

Check the signal between combination flasher unit connector and ground with oscilloscope.

OK or NG

OK

>> Check combination flasher unit. Refer to

LT-90, "TURN SIGNAL AND HAZARD WARNING

LAMPS"

 .

NG

>> GO TO 2.

2. 

CHECK COMBINATION FLASHER UNIT CIRCUIT

1.

Disconnect BCM and combination flasher unit connector.

2.

Check continuity between BCM connector M4 terminal 7 and
combination flasher unit connector M91 terminal 6.

3.

Check continuity between BCM connector M4 terminal 7 and
ground.

OK or NG

OK

>> Replace BCM.

NG

>> Repair or replace harness.

Con-

nector

Terminal 

(Wire color)

Condition

Signal

(Reference value)

(+)

(-)

M19

6 (W/L)

Ground

LOCK switch ON
with electronic key

UNLOCK switch 
ON
with electronic 
key*
*: In the state that 
hazard reminder 
operates.

PIIA2832E

PIIA2487J

PIIA2486J

7 (W/L) – 6 (W/L)

: Continuity should exist.

7 (W/L) – Ground

: Continuity should not exist.

PIIA2831E

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REMOTE KEYLESS ENTRY SYSTEM

Check Remote Keyless Entry Receiver

NIS000UY

1. 

CHECK REMOTE KEYLESS ENTRY RECEIVER POWER SUPPLY CIRCUIT

1.

Remove electronic key from ignition key cylinder.

2.

Disconnect remote keyless entry receiver connector.

3.

Check the signal between remote keyless entry receiver connector and ground with oscilloscope.

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 5.

2. 

CHECK REMOTE KEYLESS ENTRY RECEIVER OUTPUT SIGNAL

1.

Connect remote keyless entry receiver connector.

2.

Check the signal between remote keyless entry receiver connector and ground with oscilloscope.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 4.

Connector

Terminal

 (Wire color)

Condition

Signal

(Reference value)

(+)

(-)

B246

4 (L)

Ground

Stand

−

by

PIIA2835E

OCC3881D

Connec-

tor

Terminal (Wire 

color)

Condition

Signal

(Reference value)

(+)

(-)

B246 2

(BR/W)

Ground

Stand

−

by

Press any of 
the electronic 
key switches

PIIA2836E

OCC3879D

OCC3880D