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CAN COMMUNICATION
Revision: 2006 January2006 M35/M45
CAN COMMUNICATIONPFP:23710
System DescriptionNES000JT
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.
Refer to LAN-34, "
CAN COMMUNICATION" .
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TROUBLE DIAGNOSES
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Revision: 2006 January2006 M35/M45
TROUBLE DIAGNOSESPFP:00004
How to Perform Trouble DiagnosesNES000JU
BASIC CONCEPT
The most important point to perform trouble diagnosis is to understand systems (control and mechanism)
in vehicle thoroughly.
It is also important to clarify customer complaints before inspec-
tion.
First of all, reproduce symptom, and understand it fully.
Ask customer about his/her complaints carefully. In some cases,
they will be necessary to check symptom by driving vehicle with
customer.
CAUTION:
Customers are not professionals. Do not assume “maybe
customer means...” or “maybe the customer mentioned this
symptom”.
It is essential to check symptoms right from beginning in order to
repair a malfunction completely.
For an intermittent malfunction, it is important to reproduce
symptom based on interview with customer and past examples.
Do not perform inspection on ad hoc basis. Most intermittent
malfunctions are caused by poor contacts. In this case, it will be
effective to shake suspected harness or connector by hand.
When repairs are performed without any symptom check, no
one can judge if malfunction has actually been eliminated.
Always diagnosis, make sure to perform “ERASE MEMORY”.
Always read “GI General information” to confirm general precau-
tions. Refer to GI-4, "
General Precautions" .
EFJ0028D
SEF233G
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TROUBLE DIAGNOSES
Revision: 2006 January2006 M35/M45
SchematicNES000JV
TEWT0026E
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Revision: 2006 January2006 M35/M45
Wiring Diagram — T/WARN —NES000JW
TEWT0027E
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TROUBLE DIAGNOSES
Revision: 2006 January2006 M35/M45
TEWT0028E
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Revision: 2006 January2006 M35/M45
TEWT0029E
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Revision: 2006 January2006 M35/M45
Control Unit Input/Output Signal StandardNES000JX
CAUTION:
When checked using a circuit tester for voltage measurement, connector terminals should not be
forcefully extended.
Terminal
Measuring point Measuring condition Standard
+
(wire color)–
2 (B/R)
GroundIgnition switch Ignition switch ON Battery voltage (12 V)
5 (W/R)Tire pressure warning check
connectorAlways Approx. 5 V
7 (LG)
Battery power supply
Ignition switch ONBattery voltage (12 V) 8 (R/W)
9 (GY)
10 (SB)
11 (W/G)
Signal Input Approx. 4.5 V 12 (R)
13 (L)
14 (L/G)
15 (L) Data line (CAN-H) — —
16 (P) Data line (CAN-L) — —
17 (B) Ground — 0 V
19 (G/R) HazardHazard lamp switch OFF Battery voltage (Approx. 12 V)
Hazard lamp switch ON 0 V
23 (BR)
Ground
—0 V
24 (W/L) — 0 V
25 (B/R) — 0 V
26 (V) — 0 V
27 (O)
Analog signal Ignition switch ON Approx. 0.7 V 28 (G)
29 (P)
30 (L/R)
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Revision: 2006 January2006 M35/M45
ID Registration ProcedureNES000JY
ID REGISTRATION WITH ACTIVATION TOOL
This procedure must be done after replacement of a tire pressure transmitter, low tire pressure warn-
ing control unit, or tire rotation.
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunction might be detected
during self-diagnosis depending on control unit which performs CAN communication.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL)” “AIR PRESSURE MONITOR”.
If “AIR PRESSURE MONITOR” is not displayed, print the “SELECT SYSTEM” screen. Then refer to
LAN-7, "
Precautions When Using CONSULT-II"
NOTE:
Just after starting engine, or turning ignition switch ON, it may not be displayed even if “START (NIS-
SAN BASED VHCL)” is touched. In this case, reconnect CONSULT-II and CONSULT-II CONVERTER.
5. Touch “WORK SUPPORT” on “SELECT DIAG MODE” screen.
6. Touch “ID REGIST” on “SELECT WORK ITEM”.
7. With the activation tool [SST: J-45295] pushed against the front-
left tire pressure transmitter position of the tire air valve, press
and hold the button for 5 seconds.
8. Register the IDs in order from FR LH, FR RH, RR RH, RR LH.
When ID registration of each wheel has been completed, a
buzzer sounds and turn signal lamp blinks.
9. After completing all ID registrations, press “END” to complete the procedure.
NOTE:
Be sure to register the IDs in order from FR LH, FR RH, RR RH, to RR LH, or the self-diagnosis results
display will not function properly.
SEIA0460E
Activation tire position Buzzer Turn signal lamp CONSULT-II
1 Front LH Once
2 times flashing“YET”
“DONE” 2 Front RH 2 times
3 Rear RH 3 times
4 Rear LH 4 times