2006 INFINITI M35 combination meter

TROUBLE DIAGNOSIS FOR SYMPTOMS
ACS-67
[ICC]
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Revision: 2006 January2006 M35/M45
3. ADJUST LASER BEAM AIMING
1. Adjust laser beam aiming. Refer to ACS-13, "
LASER BEAM AIMING ADJUSTMENT" .
2. Perform ICC system running test. Check if preceding vehicle detection performance has been improved.
Is it improved?
YES >> INSPECTION END
NO >> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
Symptom 8: The System Does Not Detect the Vehicle Ahead at AllNKS004DR
1. CHECK DISPLAY
Check if dot matrix LCD in the combination meter illuminate. Refer to DI-17, "
Self-Diagnosis Mode of Combi-
nation Meter" .
OK or NG
OK >> GO TO 2.
NG >> Check combination meter. Refer to DI-18, "
HOW TO PERFORM TROUBLE DIAGNOSIS"
2. VISUAL CHECK 1
Check ICC sensor integrated unit body window for contamination and foreign materials.
Is it found?
YES >> 1. If any, remove them.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> GO TO 3.
3. VISUAL CHECK 2
Check ICC sensor integrated unit body window for cracks and scratches.
Is it found?
YES >> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.
NO >> GO TO 4.
4. ADJUST LASER BEAM AIMING
1. Adjust laser beam aiming. Refer to ACS-13, "
LASER BEAM AIMING ADJUSTMENT" .
2. Perform ICC system running test. Check if preceding vehicle detection performance has been improved.
Is it improved?
YES >> INSPECTION END
NO >> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system
again.

ON BOARD DIAGNOSTIC (OBD) SYSTEM
AT-43
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Revision: 2006 January2006 M35/M45
HOW TO ERASE DTC (WITH GST)
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2. Perform AT-103, "
OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST)" . (The engine warm-up step
can be skipped when performing the diagnosis only to erase the DTC.)
3. Select Mode 4 with GST (Generic Scan Tool). For details, refer to EC-146, "
Generic Scan Tool (GST)
Function" (for VQ35DE engine), EC-859, "Generic Scan Tool (GST) Function" (for VK45DE engine).
HOW TO ERASE DTC (NO TOOLS)
The A/T CHECK indicator lamp is located on the instrument panel.
1. If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
2. Perform AT-103, "
TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)" . (The engine warm-up step
can be skipped when performing the diagnosis only to erase the DTC.)
3. Perform “OBD-II SELF-DIAGNOSTIC PROCEDURE (No tools)”. Refer to EC-67, "
How to Erase DTC"
(for VQ35DE engine), EC-778, "How to Erase DTC" (for VK45DE engine).
Malfunction Indicator Lamp (MIL)NCS001K1
DESCRIPTION
The MIL is located on the combination meters.
1. The MIL will light up when the ignition switch is turned ON with-
out the engine running. This is a bulb check.
If the MIL does not light up, refer to DI-40, "WARNING LAMPS" ,
or see EC-722, "
MIL AND DATA LINK CONNECTOR" (for
VQ35DE engine), EC-1459, "
MIL AND DATA LINK CONNEC-
TOR" (for VK45DE engine).
2. When the engine is started, the MIL should go off.
If the MIL remains on, the on board diagnostic system has
detected an engine system malfunction.
SEF217U

AT-44
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
TROUBLE DIAGNOSISPFP:00004
DTC Inspection Priority ChartNCS001K2
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC “U1000” is displayed with other DTC, first perform the trouble diagnosis for “DTC U1000 CAN
COMMUNICATION LINE”. Refer to AT- 1 0 5
.
Fail-safeNCS001K3
The TCM has an electrical fail-safe mode. This mode makes it possible to operate even if there is an error in a
main electronic control input/output signal circuit.
In fail-safe mode, even if the selector lever is “D” or “M” mode, the A/T is fixed in 2nd, 4th and 5th (depending
on the breakdown position), so the customer should feel “slipping” or “poor acceleration”.
Even when the electronic circuits are normal, under special conditions (for example, when slamming on the
brake with the wheels spinning drastically and stopping the tire rotation), the A/T can go into fail-safe mode. If
this happens, switch OFF the ignition switch for 10 seconds, then switch it ON again to return to the normal
shift pattern. Therefore, the customer's vehicle has returned to normal, so handle according to the “WORK
FLOW” (Refer to AT- 4 7
).
FAIL-SAFE FUNCTION
If any malfunction occurs in a sensor or solenoid, this function controls the A/T to mark driving possible.
Vehicle Speed Sensor
Signals are input from two systems - from vehicle speed sensor A/T (revolution sensor) installed on the A/
T and from combination meter so normal driving is possible even if there is a malfunction in one of the
systems. And if vehicle speed sensor A/T (revolution sensor) has unusual cases, 5th gear and manual
mode are prohibited.
Accelerator Pedal Position Sensor
If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM accord-
ing to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow
systems, the engine speed is fixed by ECM to a pre-determined engine speed to make driving possible.
Throttle Position Sensor
If there is a malfunction in one of the systems, the accelerator opening angle is controlled by ECM accord-
ing to a pre-determined accelerator angle to make driving possible. And if there are malfunctions in tow
systems, the accelerator opening angle is controlled by the idle signal sent from the ECM which is based
on input indicating either idle condition or off-idle condition (pre-determined accelerator opening) in order
to make driving possible.
PNP Switch
In the unlikely event that a malfunction signal enters the TCM, the position indicator is switched OFF, the
starter relay is switched OFF (starter starting is disabled), the back-up lamp relay switched OFF (back-up
lamp is OFF) and the position is fixed to the “D” position to make driving possible.
Starter Relay
The starter relay is switched OFF. (Starter starting is disabled.)
Priority Detected items (DTC)
1 U1000 CAN communication line
2 Except above

AT-140
DTC P1721 VEHICLE SPEED SENSOR MTR
Revision: 2006 January2006 M35/M45
DTC P1721 VEHICLE SPEED SENSOR MTRPFP:24814
DescriptionNCS001MN
The vehicle speed sensorꞏMTR signal is transmitted from combination meter to TCM by CAN communication
line. The signal functions as an auxiliary device to the revolution sensor when it is malfunctioning. The TCM
will then use the vehicle speed sensorꞏMTR signal.
CONSULT-II Reference ValueNCS001MO
On Board Diagnosis LogicNCS001MP
This is not an OBD-II self-diagnostic item.
Diagnostic trouble code “P1721 VHE SPD SE/CIRꞏMTR” with CONSULT-II is detected when TCM does
not receive the proper vehicle speed sensor MTR signal (input by CAN communication) from unified
meter and A/C amp.
Possible CauseNCS001MQ
Harness or connectors
(Sensor circuit is open or shorted.)
DTC Confirmation ProcedureNCS001MR
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Touch “START”.
4. Start engine and maintain the following conditions for at least 5
consecutive seconds.
ACCELE POSI: 1/8 or less
VHCL/S SEꞏMTR: 30 km/h (17 MPH) or more
5. If DTC is detected, go to AT-141, "
Diagnostic Procedure" .
Item name Condition Display value
VHCL/S SEꞏMTR During driving Approximately matches the speedometer reading.
BCIA0030E

DTC P1815 MANUAL MODE SWITCH
AT-167
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Revision: 2006 January2006 M35/M45
DTC P1815 MANUAL MODE SWITCHPFP:34901
DescriptionNCS001OT
Manual mode switch is installed in A/T device. It sends manual mode switch, shift up and shift down switch
signals to TCM.
TCM sends the switch signals to combination meters. By CAN communication line. Then manual mode switch
position is indicated on the A/T indicator. For inspection, refer to AT- 1 8 6 , "
A/T INDICATOR CIRCUIT" .
CONSULT-II Reference ValueNCS001OU
On Board Diagnosis LogicNCS001OV
This is not an OBD-II self-diagnostic item.
Diagnostic trouble code “P1815 MANU MODE SW/CIRC” with CONSULT-II is detected when TCM moni-
tors Manual mode, Non manual mode, Up or Down switch signal, and detects as irregular when impossi-
ble input pattern occurs 1 second or more.
Possible CauseNCS001OW
Harness or connectors
(These switches circuit is open or shorted.)
Manual mode select switch (Into control device)
Manual mode position select switch (Into control device)
DTC Confirmation ProcedureNCS001OX
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.
3. Start engine.
4. Drive vehicle and maintain the following conditions for at least 2
consecutive seconds.
MANU MODE SW: ON
5. If DTC is detected, go to AT- 1 7 0 , "
Diagnostic Procedure" .
Item name Condition Display Value
MANU MODE SWManual shift gate position (neutral) ON
Other than the above OFF
NON M-MODE SWManual shift gate position OFF
Other than the above ON
UP SW LEVERSelector lever: + side ON
Other than the above OFF
DOWN SW LEVERSelector lever: - side ON
Other than the above OFF
BCIA0030E

AT-170
DTC P1815 MANUAL MODE SWITCH
Revision: 2006 January2006 M35/M45
TCM terminals and data are reference value. Measured between each terminal and ground.
Diagnostic ProcedureNCS001OZ
1. CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to AT- 9 2 , "
SELF-DIAGNOSTIC RESULT MODE" .
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to AT- 1 0 5 , "DTC U1000 CAN COMMUNICATION LINE" .
NO >> GO TO 2.
2. CHECK MANUAL MODE SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Read out ON/OFF switching action of “MANU MODE SW”,
“NON M-MODE SW”, “UP SW LEVER”, “DOWN SW LEVER”.
Without CONSULT-II
Drive vehicle in the manual mode, and confirm that the actual gear position and the meter's indication of the
position mutually coincide when the selector lever is shifted to the “+ (up)” or “- (down)” side (1st
5th gear).
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTIONING ITEM
Check the following.
Manual mode switch. Refer to AT-171, "Component Inspection" .
Pin terminals for damage or loose connection with harness connector.
Open circuit or short to ground or short to power in harness or connector for A/T device (manual mode
switch).
Unified meter and A/C amp. Refer to DI-5, "COMBINATION METERS" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
Terminal Item Condition Data (Approx.)
3CAN-H – –
8CAN-L – –
9 Starter relaySelector lever in “N”, “P” positions. Battery voltage
Selector lever in “R”, “D” positions. 0V
Item name Condition Display Value
MANU MODE SWManual shift gate position (neutral) ON
Other than the above OFF
NON M-MODE SWManual shift gate position OFF
Other than the above ON
UP SW LEVERSelector lever: +side ON
Other than the above OFF
DOWN SW LEVERSelector lever: -side ON
Other than the above OFF
SCIA4988E

AT-186
A/T INDICATOR CIRCUIT
Revision: 2006 January2006 M35/M45
A/T INDICATOR CIRCUITPFP:24810
DescriptionNCS001PV
TCM sends the switch signals to unified meter and A/C amp. By CAN communication line. Then manual mode
switch position is indicated on the A/T indicator.
CONSULT-II Reference ValueNCS001PW
Diagnostic ProcedureNCS001PX
1. CHECK INPUT SIGNALS
With CONSULT-II
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II and read out the value of “GEAR”.
3. Drive vehicle in the manual mode, and confirm that the actual
gear position and the meter's indication of the position mutually
coincide when the selector lever is shifted to the “+ (up)” or “-
(down)” side (1st
5th gear).
OK or NG
OK >>INSPECTION END
NG >> Check the following.
A/T INDICATOR SYMPTOM CHART
Item name Condition Display value
GEAR During driving 1, 2, 3, 4, 5
PCIA0065E
Items Possible location of malfunction
The actual gear position does not change, or shifting into the
manual mode is not possible (no gear shifting in the manual mode
possible).
The A/T indicator is not indicated.Manual mode switch
Refer to AT- 1 6 7 , "
DTC P1815 MANUAL MODE SWITCH" .
A/T main system (Fail-safe function actuated)
Refer to AT- 9 2 , "SELF-DIAGNOSTIC RESULT MODE" .
The actual gear position changes, but the A/T indicator is not indi-
cated.Perform the self-diagnosis function.
Refer to AT- 9 2 , "SELF-DIAGNOSTIC RESULT MODE" .
The actual gear position and the indication on the A/T indicator do
not coincide.Perform the self-diagnosis function.
Refer to AT- 9 2 , "SELF-DIAGNOSTIC RESULT MODE" .
Only a specific position or positions is/are not indicated on the A/T
indicator.Check the unified meter and A/C amp.
Refer to DI-5, "
COMBINATION METERS" .

AT-190
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 January2006 M35/M45
TCM terminals and data are reference value. Measured between each terminal and ground.
A/T CHECK Indicator Lamp Does Not Come OnNCS001PZ
SYMPTOM:
A/T CHECK indicator lamp does not come on for about 2 seconds when turning ignition switch to ON.
DIAGNOSTIC PROCEDURE
1. CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to AT- 9 2 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 3 , "TCM SELF-DIAG-
NOSTIC PROCEDURE (NO TOOLS)" .
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer to AT- 1 0 5 , "DTC U1000 CAN COMMUNICATION LINE" .
NO >> GO TO 2.
2. CHECK A/T CHECK INDICATOR LAMP CIRCUIT
Check combination meters. Refer to DI-5, "
COMBINATION METERS" .
OK or NG
OK >> GO TO 3
NG >> Repair or replace damaged parts.
3. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to AT- 1 8 0 , "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT" .
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Engine Cannot Be Started in “P” or “N” PositionNCS001Q0
SYMPTOM:
Engine cannot be started with selector lever in “P” or “N” position.
Engine can be started with selector lever in “D”or “R” position.
DIAGNOSTIC PROCEDURE
1. CHECK PNP SWITCH CIRCUIT
Perform self-diagnosis. Refer to AT- 9 2 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 1 0 3 , "TCM SELF-DIAG-
NOSTIC PROCEDURE (NO TOOLS)" .
Do the self-diagnostic results indicate PNP switch?
YES >> Check malfunctioning system. Refer to AT- 11 3 , "DTC P0705 PARK/NEUTRAL POSITION
SWITCH" .
NO >> GO TO 2.
Terminal Item Condition Data (Approx.)
3CAN-H – –
4K-line (CONSULT-II
signal)The terminal is connected to the data link connector for CONSULT- I I. –
7 Back-up lamp relaySelector lever in “R” position. 0V
Selector lever in other positions. Battery voltage
8CAN-L – –