INFINITI FX35 2005 Service Manual

DI-60
WARNING CHIME
Revision: 2005 July 2005 FX

to combination meter terminal 9

through seat belt buckle switch (driver side) terminal 60.
Seat belt buckle switch (driver side) terminal 61A is grounded through body grounds B15 and B45.
Combination meter sends seat belt unfastened [seat belt buckle switch (driver side) ON] signal to unified
meter and A/C amp. with communication line between unified meter and A/C amp. and combination meter.
BCM receives seat belt unfastened [seat belt buckle switch (driver side) ON] signal from unified meter and A/
C amp. with CAN communication line, and sends seat belt warning signal to unified meter and A/C amp. with
CAN communication line. Unified meter and A/C amp. sends seat belt warning signal to combination meter
with communication line between unified meter and A/C amp. and combination meter.
When combination meter receives seat belt warning signal, it sounds warning chime.
CAN Communication System DescriptionAKS007Z2
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitAKS007YY
Refer to LAN-30, "CAN Communication Unit" in “LAN SYSTEM”.

WARNING CHIME DI-61
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Component Parts and Harness Connector LocationAKS005NK
SKIA9338E

DI-62
WARNING CHIME
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SchematicAKS0069H
TKWM0812E

WARNING CHIME DI-63
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Wiring Diagram — CHIME —AKS005NN
TKWM2061E

DI-64
WARNING CHIME
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TKWM0697E

WARNING CHIME DI-65
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TKWM2435E

DI-66
WARNING CHIME
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Terminals and Reference Value for BCMAKS005NO
Te r m i n a l
No. Wire
color Item Measuring condition
Reference value
Ignition
switch Operation or condition
2 GY Combination switch input 5 ON Lighting, turn, wiper OFF
Wiper dial position 4
3 L/B Combination switch input 4 ON Lighting, turn, wiper OFF
Wiper dial position 4
4 PU/W Combination switch input 3
5 Y/R Combination switch input 2
6 SB Combination switch input 1
32 GY/R Combination switch output 5 ON Lighting, turn, wiper OFF
Wiper dial position 4
33 G Combination switch output 4 ON Lighting, turn, wiper OFF
Wiper dial position 4
34 W/B Combination switch output 3
35 W/G Combination switch output 2
36 W/R Combination switch output 1
37 B/W Key switch signal OFF Key is removed Approx. 0 V
Key is inserted Battery voltage
38 W/L Ignition switch ON or START ON — Battery voltage
39 L CAN H OFF — —
40 R CAN L OFF — —
42 L/R Battery power supply OFF — Battery voltage
49 B Ground ON — Approx. 0 V
52
55 G Battery power supply OFF — Battery voltage
62 W Front door switch (driver side) OFF When driver side door is
opened (Door switch ON) Approx. 0 V
When driver side door is
closed (Door switch OFF) Approx. 12 V
PKIB3468E
PKIB3469E
PKIB3470E
PKIB3471E

WARNING CHIME DI-67
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Terminals and Reference Value for Unified Meter and A/C Amp. AKS005NP
Terminals and Reference Value for Combination MeterAKS005NQ
Terminal
No. Wire
color Item Measuring condition
Reference value
Ignition
switch Operation or condition
1 L CAN H OFF — —
9PU TX communication line (To
combination meter) ON —
11 R C A N L O F F — —
19 L/B RX communication line
(From combination meter) ON —
21 R/W Battery power supply OFF — Battery voltage
22 G/R Ignition switch ON or START ON — Battery voltage
29 B Ground (power)
ON — Approx. 0 V
30 Ground
SKIA3362E
SKIA3361E
Terminal
No. Wire
color Item Measuring condition
Reference value
Ignition
switch Operation or condition
5 B Ground ON — Approx. 0 V
6
7 G/Y Ignition switch ON or START ON — Battery voltage
8 R/W Battery power supply OFF — Battery voltage
9 LG/R Seat belt buckle switch
(driver side) ON Unfastened (ON) Approx. 0 V
Fastened (OFF) Approx. 12 V
13 L/B TX communication line (To
unified meter and A/C amp.) ON —
14 PU RX communication line
(From unified meter and A/C
amp.) ON —
15 B Ground ON — Approx. 0 V
SKIA3361E
SKIA3362E

DI-68
WARNING CHIME
Revision: 2005 July 2005 FX
Trouble DiagnosisAKS005NR
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the malfunction symptom or customer complaint.
2. Understand operation description and function description. Refer to DI-58, "
System Description" .
3. Perform the Preliminary Check. Refer to DI-68, "
PRELIMINARY CHECK" .
4. Select “METER A/C AMP” on CONSULT-II, and perform self-diagnosis of unified meter and A/C amp. Refer to DI-31, "
CONSULT-II Function (METER A/C AMP)" . When no malfunction detected, go to next
step 5. When malfunction detected, go to DI-17, "
Symptom Chart 2" in “COMBINATION METER”.
5. Check symptom and repair or replace the cause of malfunction.
6. Does the warning chime operate normally? If so, GO TO 7. If not, GO TO 5.
7. INSPECTION END
PRELIMINARY CHECK
Inspection for Power Supply and Ground Circuit
1. CHECK FUSE AND FUSIBLE LINK
Check BCM fuses and fusible link for blown-out.
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse or fusible link. Refer to PG-3, "
POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
Check voltage between BCM harness connector terminals and
ground.
OK or NG
OK >> GO TO 3.
NG >> Check harness between BCM and fuse or fusible link.
Unit Power source Fuse and fusible link No.
BCM Battery
M
22
Ignition switch ON or START 1
Terminals Ignition switch position
(+) (–) OFF ON
Connector Terminal
(Wire color)
M4 55 (G)
Ground Battery voltage Battery voltage
42 (L/R)
M3 38 (W/L) 0 V Battery voltage
PKIB3988E

WARNING CHIME DI-69
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3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM harness connector M4 terminals 49 (B), 52 (B) and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
CONSULT-II Function (BCM)AKS005NT
CONSULT-II performs the following functions communicating with the BCM.
DIAGNOSTIC ITEMS DESCRIPTION
CONSULT-II BASIC OPERATION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. With the ignition switch OFF, connect “CONSULT-II” and “CON- SULT-II CONVERTER” to the data link connector, and turn the
ignition switch ON.
2. Touch “START (NISSAN BASED VHCL)”. 49 (B) – Ground
: Continuity should exist.
52 (B) – Ground
SKIA5041E
System Test item Diagnosis mode Description Reference
page
BCM BUZZER Data monitor The input data to the BCM control unit is displayed in real time.
DI-70
Active test Operation of electrical loads can be checked by sending driving
signal to them. DI-70
BCM Self-diagnostic BCM performs self-diagnosis of CAN communication.
DI-71
PBIB1503E
SAIA0450E