2006 INFINITI M35 combination meter

TF-14
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
TROUBLE DIAGNOSISPFP:00004
Fail-Safe FunctionNDS000DF
If any malfunction occurs in AWD electrical system, and control unit detects the malfunction, AWD warn-
ing lamp on combination meter turns ON to indicate system malfunction.
When AWD warning lamp is ON, vehicle changes to rear-wheel drive or shifting driving force-AWD (Front-
wheels still have some driving torque).
How to Perform Trouble DiagnosisNDS000DG
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.
Refer to TF-22, "
How to Erase Self-Diagnostic Results" .
For intermittent malfunctions, move harness or harness connec-
tor by hand. Then check for poor contact or reproduced open circuit.
SEF233G
SEF234G

TROUBLE DIAGNOSIS FOR SYMPTOMS
TF-33
C
E
F
G
H
I
J
K
L
MA
B
TF
Revision: 2006 January2006 M35/M45
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
AWD Warning Lamp Does Not Turn ON When The Ignition Switch Is Turned to
ON
NDS000DU
DIAGNOSTIC PROCEDURE
1. CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to TF-22, "
SELF-DIAG RESULT MODE" .
Is the
“CAN COMM CIRCUIT [U1000]” displayed?
YES >> Perform trouble diagnosis for CAN communication line. Refer to TF-32, "CAN Communication
Line" .
NO >> GO TO 2.
2. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-20, "
AWD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> GO TO 3.
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
3. CHECK OUTPUT SIGNAL WITH UNIFIED METER AND A/C AMP.
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “METER A/C AMP” with CONSULT-II.
3. Start the engine, and then make sure that “4WD W/L” display
turns from "ON" to "OFF" after several seconds.
OK or NG
OK >> GO TO 4.
NG >> Perform trouble diagnosis for combination meter. Refer
to DI-18, "
Trouble Diagnosis" .
4. SYMPTOM CHECK
Check again.
OK or NG
OK >>INSPECTION END
NG >> Replace unified meter control unit assembly. Refer to DI-27, "
Disassembly and Assembly of Com-
bination Meter" .
AWD Warning Lamp Does Not Turn OFF Several Seconds after Engine StartedNDS000DV
DIAGNOSTIC PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to TF-22, "
SELF-DIAG RESULT MODE" .
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 2.
Monitor item Condition Display value
4WD W/LIgnition switch ON ON
Start engine (after several seconds) OFF
SDIA2065E

TROUBLE DIAGNOSIS FOR SYMPTOMS
TF-35
C
E
F
G
H
I
J
K
L
MA
B
TF
Revision: 2006 January2006 M35/M45
4. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-20, "
AWD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> GO TO 5.
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
5. CHECK OUTPUT SIGNAL WITH UNIFIED METER AND A/C AMP.
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “DATA MONITOR” mode for “METER A/C AMP” with CONSULT-II.
3. Start the engine, and then make sure that “4WD W/L” display
turns from "ON" to "OFF" after several seconds.
OK or NG
OK >> GO TO 6.
NG >> Perform trouble diagnosis for combination meter. Refer
to DI-18, "
Trouble Diagnosis" .
6. SYMPTOM CHECK
Check again.
OK or NG
OK >>INSPECTION END
NG >> Replace unified meter control unit assembly. Refer to DI-27, "
Disassembly and Assembly of Com-
bination Meter" .
Heavy Tight-Corner Braking Symptom Occurs When The Vehicle Is Driven and
The Steering Wheel Is Turned Fully to Either Side after The Engine Is Started
NDS000DW
NOTE:
Light tight-corner braking symptom may occur depending on driving conditions. This is not malfunc-
tion.
DIAGNOSTIC PROCEDURE
1. CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to TF-22, "
SELF-DIAG RESULT MODE" .
Is the
“CAN COMM CIRCUIT [U1000]” displayed?
YES >> Perform trouble diagnosis for CAN communication line. Refer to TF-32, "CAN Communication
Line" .
NO >> GO TO 2.
2. CHECK ACCELERATOR PEDAL POSITION SIGNAL CIRCUIT
Perform self-diagnosis for ECM. Refer to EC-55, "
Emission-Related Diagnostic Information" .
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 3.
Monitor item Condition Display value
4WD W/LIgnition switch ON ON
Start engine (after several seconds) OFF
SDIA2065E

WT-10
LOW TIRE PRESSURE WARNING SYSTEM
Revision: 2006 January2006 M35/M45
RECEIVER
The receiver receives the air pressure signal transmitted by the transmitter in each wheel.
LOW TIRE PRESSURE WARNING CONTROL UNIT
The low tire pressure warning control unit (1) reads the air pressure
signal received by the receiver, and controls the low tire pressure
warning lamp and the buzzer operations. It also has a judgement
function to detect a system malfunction.
LOW TIRE PRESSURE WARNING LAMP
The combination meter receives tire pressure status from the low tire
pressure warning control unit using CAN communication. When a
low tire pressure condition is sensed by the low tire pressure control
unit, the combination meter low tire pressure warning lamp and
buzzer are activated.
Low Tire Pressure Warning Lamp Indication
*: Standard air pressure is for 230 kpa (2.3 kg/cm2 , 33 psi) vehicle. 1. Tire pressure receiver front 2. Tire pressure receiver rear A. Front wheel house
B. Rear wheel house
Refer to GI-11, "
Components" , for the symbols in the figure.
SEIA0649E
SEIA0650E
SEIA0434E
ConditionLow tire pressure warning
lampBuzzer
Less than 186 kPa
(1.86 kg/cm
2 , 27 psi) [Flat tire]*ON Sounds for 10 sec.
Low tire pressure warning system malfunction [Other diagnostic item]Warning lamp flashes 1 min,
then turns ONOFF

TROUBLE DIAGNOSES
WT-23
C
D
F
G
H
I
J
K
L
MA
B
WT
Revision: 2006 January2006 M35/M45
NOTICE:
186 kPa (1.86 kg/cm2 , 27 psi): Standard air pressure is for 230 kpa (2.3 kg/cm2 , 33 psi) vehicles.
How to Erase Self-Diagnostic Results
1. Perform applicable inspection of malfunctioning item and then repair or replace.
2. Start engine, and touch “START (NISSAN BASED VHCL)” “ AIR PRESSURE MONITOR” “SELF-DIAG
RESULTS” “ERASE” in this order to erase the diagnostic memory.
CAUTION:
If memory cannot be erased, repeat step 1, 2.
3. Perform self-diagnosis again, and make sure that DTC memory is erased.
DATA MONITOR MODE
Operation Procedure
1. Perform “CONSULT-II Start Procedure”. Refer to GI-39, "CONSULT-II Start Procedure" .
2. Touch “DATA MONITOR”.
3. Select from “SELECT MONITOR ITEM”, screen of data monitor is displayed.
NOTE:
When malfunction is detected, CONSULT-II performs REAL-TIME DIAGNOSIS. Also, any malfunction
detected while in this mode will be displayed in real time.
Display Item List
NOTE:
Before performing the self-diagnosis, be sure to register the ID, or else the actual malfunction location may be different from that dis-
played on CONSULT-II.
ACTIVE TEST MODE
Operation Procedure
1. Perform “CONSULT-II Start Procedure”. Refer to GI-39, "CONSULT-II Start Procedure" .
2. “ACTIVE TEST” is displayed.
Display Item List
NOTE:
Before performing the self-diagnosis, be sure to register the ID, or else the actual malfunction location may be different from that dis-
played on CONSULT-II.MONITOR CONDITION SPECIFICATION
VEHICLE SPEED SE Drive vehicle. Vehicle speed (km/h or MPH)
AIR PRESS FL
AIR PRESS FR
AIR PRESS RR
AIR PRESS RL
Drive vehicle for a few minutes.
Tire pressure (kPa or Psi) or
Ignition switch ON and activation tool
is transmitting activation signals.
ID REGST FL 1
ID REGST FR 1
ID REGST RR 1
ID REGST RL 1
Ignition switch ONRegistration ID: DONE
No registration ID: YET
WARNING LAMPLow tire pressure warning lamp on: ON
Low tire pressure warning lamp off: OFF
BUZZERBuzzer in combination meter on: ON
Buzzer in combination meter off: OFF
Test item Content
BUZZER This test is able to check to make sure that the buzzer sounds.
WARNING LAMP This test is able to check to make sure that the warning lamp turns on.
HAZARD LAMP This test is able to check to make sure that hazard lamp turns on.

WT-24
TROUBLE DIAGNOSES
Revision: 2006 January2006 M35/M45
LOW TIRE PRESSURE WARNING CONTROL UNIT PART NUMBER
Operation Procedure
1. Perform “CONSULT-II Start Procedure”. Refer to GI-39, "CONSULT-II Start Procedure" .
2. The part number described on low tire pressure warning control unit sticker is displayed.
Diagnosis Procedure with Warning Lamp Function (Without CONSULT-II)NES000K6
DESCRIPTION
During driving, the low tire pressure warning system receives the signal transmitted from the transmitter
installed in each wheel, and gives alarms when the tire pressure becomes low. The control unit (low tire pres-
sure warning control unit) of this system has pressure judgement and trouble diagnosis functions.
FUNCTION
When the low tire pressure warning system detects low inflation pressure or another unusual symptom, the
warning lamps in the combination meter comes on. To start the self-diagnostic results mode, ground terminal
of the tire pressure warning check connector. The malfunction location is indicated by the warning lamp flash-
ing and the buzzer sounds. Regarding location of tire pressure warning check connector, refer to PG-63,
"HARNESS" .
LOW TIRE PRESSURE WARNING LAMP DIAGNOSTIC CHART
Diagnosis
ItemSymptom
(Ignition switch ON)Low tire pressure warning lamp Cause Action
Low tire pres-
sure warning
lampWarning light comes
on immediately and
turns off after 1 sec-
ond.All wheel transmit-
ters are “activated”
(working).None (system OK)
Warning light blinks
on for 2 seconds,
then turns off for 0.2
seconds-repeats.All wheel transmit-
ters are not acti-
vated.Activate all wheel tire pres-
sure transmitters. Refer to
WT-21, "
Transmitter Wake Up
Operation" .
Warning light blinks
1 time.Tire pressure trans-
mitter front LH is not
activated.Activate tire pressure trans-
mitter front LH. Refer to WT-
21, "Transmitter Wake Up
Operation" .
Warning light blinks
2 times.Tire pressure trans-
mitter front RH is not
activated.Activate tire pressure trans-
mitter front RH. Refer to WT-
21, "Transmitter Wake Up
Operation" .
Warning light blinks
3 times.Tire pressure trans-
mitter rear RH is not
activated.Activate tire pressure trans-
mitter rear RH. Refer to WT-
21, "Transmitter Wake Up
Operation" .
SEIA0592E
SEIA0593E
SEIA0594E
SEIA0595E
SEIA0596E

TROUBLE DIAGNOSES
WT-27
C
D
F
G
H
I
J
K
L
MA
B
WT
Revision: 2006 January2006 M35/M45
Preliminary CheckNES000K8
BASIC INSPECTION
1. CHECK ALL TIRE PRESSURES
Check all tire pressures. Refer to WT-41, "
SERVICE DATA AND SPECIFICATIONS (SDS)" .
OK or NG
OK >> GO TO 2.
NG >> Adjust tire pressure to specified value.
2. CHECK LOW TIRE PRESSURE WARNING LAMP ACTIVATION
1. Check low tire pressure warning lamp activation.
2. Does low tire pressure warning lamp activate for 1 second when ignition switch is turned “ON”.
Does warning lamp activate?
YES >> GO TO 3.
NO >> Check fuse and combination meter. Refer to DI-5, "
COMBINATION METERS" .
3. CHECK CONNECTOR
1. Disconnect low tire pressure warning control unit harness connectors M19.
2. Check terminals for damage or loose connection.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK ACTIVATION TOOL
Check activation tool battery.
OK or NG
OK >> Perform self-diagnosis.
NG >> Replace activation tool battery.

WT-34
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2006 January2006 M35/M45
2. REPLACE TIRE PRESSURE TRANSMITTER
1. Check low tire pressure warning condition again, and replace malfunctioning tire pressure transmitter.
2. Perform ID registration of all transmitter.
Can ID registration of all tire pressure transmitters be completed?
YES >> GO TO 3.
NO >> GO TO the inspection 1. Refer to WT-30, "
Inspection 1: Transmitter no Data" .
3. VEHICLE DRIVING
Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for 10
minutes. Then check all tire pressures with CONSULT-II “DATA MONITOR” within 5 minutes.
Does
“DATA MONITOR” display tire pressure as normal without any warning lamp?
YES >> INSPECTION END
NO >> Replace malfunctioning transmitter, and perform “Step 3” again.
Inspection 7: Vehicle Speed SignalNES000KG
MALFUNCTION CODE NO. 52
1. CHECK SELF-DIAGNOSIS RESULTS
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 (NISSAN
BASED VHCL)” is touched. In this case, reconnect CONSULT-II and CONSULT-II CONVERTER.
5. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
6. Check display contents in self-diagnostic results.
Is
“CAN COMM CIRCUIT” displayed in the self-diagnosis display items?
YES >> Malfunction in CAN communication system. GO TO LAN-7, "Precautions When Using CONSULT-
II" .
NO >> No malfunction. Check combination meter refer to DI-18, "
Trouble Diagnosis" .
Inspection 8: CAN Communication System MalfunctionNES000KS
1. CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT CONNECTOR
1. Turn ignition switch OFF, disconnect low tire pressure warning control unit harness connector, and check
terminal for deformation, disconnection, looseness, etc.
2. Reconnect harness connector securely, and perform CONSULT-II self-diagnosis.
Is above displayed on self-diagnosis display?
YES >> If “CAN COMM CIRCUIT [U1000]” is displayed, print out self-diagnosis. And then, go to LAN-7,
"Precautions When Using CONSULT-II" .
NO >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
Self-diagnostic results
CAN COMM CIRCUIT [U1000]