NISSAN 350Z 2007 Z33 Road Wheels And Tires User Guide

TIRE PRESSURE MONITORING SYSTEM
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BCM (BODY CONTROL MODULE)
The BCM reads the air pressure signal received by the remote key-
less entry receiver, and controls the low tire pressure warning lamp
operations. It also has a judgement function to detect a system mal-
function.
LOW TIRE PRESSURE WARNING LAMP
The combination meter receives tire pressure status from the BCM
using CAN communication. When a low tire pressure condition is
sensed by the BCM, the combination meter low tire pressure warn-
ing lamp are activated.
Low tire pressure warning lamp indication
NOTE:
Standard air pressure is for 240 kpa (2.4 kg/cm2 , 35 psi) vehicles.
SEIA0591E
SEIA0434E
Condition Low tire pressure warning lamp
Less than 190 kPa (1.90 kg/cm
2 , 28 psi) [Note]ON
Low tire pressure warning system malfunction [Other diagnostic item] Warning lamp flashes 1 min, then turns ON.

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TIRE PRESSURE MONITORING SYSTEM
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Can CommunicationNES000A0
SYSTEM DESCRIPTION
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-49, "
CAN
Communication Signal Chart" .

TROUBLE DIAGNOSIS
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TROUBLE DIAGNOSISPFP:00004
How to Perform Trouble DiagnosisNES000AF
BASIC CONCEPT

To perform trouble diagnosis, it is the most important to have understanding about vehicle systems (con-
trol and mechanism) thoroughly.

It is also important to clarify customer complaints before inspec-
tion.
First of all, reproduce symptoms, and understand them fully.
Ask customer about his/her complaints carefully. In some cases,
it will be necessary to check symptoms by driving vehicle with
customer.
CAUTION:
Customers are not professional. It is dangerous to make an
easy guess like “maybe the customer means that...,” or
“maybe the customer mentions this symptom”.

It is essential to check symptoms right from the beginning in
order to repair malfunctions completely.
For intermittent malfunctions, reproduce symptoms 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 repairing with-
out any symptom diagnosis, you cannot judge if malfunctions
have actually been eliminated.

After completing diagnosis, always erase diagnostic memory.

For intermittent malfunctions, move harness or harness connec-
tor by hand. Then check for poor contact or reproduced open cir-
cuit.
INTRODUCTION

Before troubleshooting, verify customer complaints.

If a vehicle malfunction is difficult to reproduce, harnesses, harness connectors or terminals may be mal-
functioning. Hold and shake these parts to make sure they are securely connected.

When using a circuit tester to measure voltage or resistance of each circuit, be careful not to damage or
deform connector terminals.
SEF233G
SEF234G

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TROUBLE DIAGNOSIS
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WORK FLOW
Preliminary check:WT-29Self-diagnosis:WT-23Trouble diagnosis for symptoms:WT-33
SEIA0100E

TROUBLE DIAGNOSIS
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SchematicNES0001D
TEWT0020E

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TROUBLE DIAGNOSIS
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Wiring Diagram — T/WARN —NES0001E
TEWT0056E

TROUBLE DIAGNOSIS
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TEWT0022E

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TROUBLE DIAGNOSIS
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TEWT0023E

TROUBLE DIAGNOSIS
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Trouble Diagnosis Chart for Symptoms NES000A1
If low tire pressure warning lamp turns ON, perform self-diagnosis. Refer to WT-23, "SELF-DIAG RESULTS MODE" .
Symptom Check item Reference page
Warning lamp does not come on when ignition switch is
turned on.CAN communication line
WT-33
Combination meter
BCM
Warning lamp stays on when ignition switch is turned
on.ID registration
WT-33
BCM connector or circuit
BCM
Warning lamp blinks when ignition switch is turned on.BCM connector or circuit
WT-35
BCM
Turn signal lamp blinks when ignition switch is turned
on.BCM connector or circuit
WT-36
BCM
ID registration can not be operated.Transmitter
WT-36
Remote keyless entry receiver connector or circuit
Remote keyless entry receiver
BCM connector or circuit
BCM

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TROUBLE DIAGNOSIS
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Control Unit Input/Output Signal StandardNES0001F
Standards using a circuit tester and oscilloscope
Te r m i n a l
(Wire color)Item ConditionVoltage (V)
Approx. value
15 (W)Tire pressure warning check con-
nectorAlways 5V
18 (B)Remote keyless entry receiver
(Ground)—0V
19 (Y)Remote keyless entry receiver
(Power supply)Stand-by
Press any of the keyfob switches
20 (L)Remote keyless entry receiver
(Signal)Stand-by
Press any of the keyfob switches
38 (W/L) Ignition switch Ignition switch ON or START Battery voltage (12V)
39 (L) Data line (CAN H) — —
40 (P) Data line (CAN L) — —
42 (GY) Battery power supply (Fuse) Always Battery voltage (12V)
45 (G/W) Turn signal (left)

Ignition switch ON

Combination switch is turn left ON
OCC3879D
OCC3882D
OCC3881D
OCC3880D
SKIA3009J