INFINITI FX35 2004 Service Manual

AT-104
TROUBLE DIAGNOSIS
Revision: 2004 November 2004 FX35/FX45
Judgement Self-diagnosis Code
If there is a malfunction, the lamp lights up for the time corresponding to the suspect circuit.
Erase Self-diagnosis

In order to make it easier to find the cause of hard-to-duplicate malfunctions, malfunction information is
stored into the control unit as necessary during use by the user. This memory is not erased no matter how
many times the ignition switch is turned ON and OFF.

However, this information is erased by turning ignition switch “OFF” after executing self-diagnostics or by
erasing the memory using the CONSULT-II.
SCIA4758E

DTC U1000 CAN COMMUNICATION LINE
AT-105
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Revision: 2004 November 2004 FX35/FX45
DTC U1000 CAN COMMUNICATION LINEPFP:23710
DescriptionACS007AK
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 malfunction detection ability.
Many electronic 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 con-
nected 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.
On Board Diagnosis LogicACS007AL

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “CAN COMM CIRCUIT” with CONSULT-II or U1000 without CONSULT-II is
detected when TCM cannot communicate to other control units.
Possible CauseACS007AM
Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation ProcedureACS007AN
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 “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
3. Start engine and wait for at least 6 seconds.
4. If DTC is detected, go to AT- 1 0 7 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
SAT014K

AT-106
DTC U1000 CAN COMMUNICATION LINE
Revision: 2004 November 2004 FX35/FX45
Wiring Diagram — AT — CANACS007AO
TCWM0246E

DTC U1000 CAN COMMUNICATION LINE
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Revision: 2004 November 2004 FX35/FX45
TCM terminals and data are reference value. Measured between each terminal and ground.
Diagnostic ProcedureACS007AP
1. CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-II
1. Turn ignition switch “ON” and start engine.
2. Select “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II.
Is any malfunction of the
“CAN COMM CIRCUIT” indicated?
YES >> Print out CONSULT-II screen, GO TO LAN section.
Refer to LAN-4, "
Precautions When Using CONSULT-II"
.
NO >>INSPECTION END
TerminalWire
colorItem Condition Data (Approx.)
3 L CAN-H – –
8 R CAN-L – –
PCIA0061E

AT-108
DTC P0615 START SIGNAL CIRCUIT
Revision: 2004 November 2004 FX35/FX45
DTC P0615 START SIGNAL CIRCUITPFP:25230
DescriptionACS007AQ
Prohibits cranking other than at “P” or “N” position.
CONSULT-II Reference ValueACS007AR
On Board Diagnosis LogicACS007AS

This is not an OBD-II self-diagnostic item.

Diagnostic trouble code “STARTER RELAY/CIRC” with CONSULT-II or 14th judgement flicker without
CONSULT-II is detected when starter relay is switched “ON” other than at “P” or “N” position. (Or when
switched “OFF” at “P” or “N” position).
Possible CauseACS007AT

Harness or connectors
(Starter relay and TCM circuit is open or shorted.)

Starter relay circuit
DTC Confirmation ProcedureACS007AU
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF”
and wait at least 10 seconds before conducting 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 “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Start engine.
4. Vehicle start for at least 2 consecutive seconds.
5. If DTC is detected, go to AT- 11 0 , "
Diagnostic Procedure" .
Item name Condition Display value
STARTER RELAYSelector lever in N and P positions. ON
Selector lever in other positions. OFF
SAT014K

DTC P0615 START SIGNAL CIRCUIT
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Revision: 2004 November 2004 FX35/FX45
Wiring Diagram — AT — STSIGACS007AV
TCWM0247E

AT-110
DTC P0615 START SIGNAL CIRCUIT
Revision: 2004 November 2004 FX35/FX45
TCM terminals and data are reference value. Measured between each terminal and ground.
Diagnostic ProcedureACS007AW
1. CHECK STARTER RELAY
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “SELECTION FROM MENU” in “DATA MONITOR” mode
for “A/T” with CONSULT-II and check monitor “STARTER
RELAY” ON/OFF.
Without CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Check the voltage between the IPDM E/R connector and
ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. DETECT MALFUNCTIONING ITEM
Check the following items:

Starter relay, Refer to SC-10, "System Description" .

IPDM E/R, Refer to PG-18, "IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)" .

Disconnections or short-circuits in the harness between A/T assembly harness connector and IPDM E/R.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
TerminalWire
colorItem Condition Data (Approx.)
9GYStarter relaySelector lever in “N” and “ P” positions. Battery voltage
Selector lever in other positions. 0V
Item name Condition Display value
STARTER RELAYSelector lever in N and P positions. ON
Selector lever in other positions. OFF
PCIA0056E
Item ConnectorTerminal
(Wirer color)Shift position Voltage (Approx.)
Starter
relayE953
(GY)GroundN and P Battery voltage
R, D and M 0V
SCIA2103E

DTC P0615 START SIGNAL CIRCUIT
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Revision: 2004 November 2004 FX35/FX45
3. CHECK TERMINAL CORD ASSEMBLY
1. Remove control valve with TCM. Refer to AT- 2 4 2 , "
Control Valve with TCM and A/T Fluid Temperature
Sensor 2" .
2. Disconnect A/T assembly harness connector and control valve with TCM harness connector.
3. Check continuity between A/T assembly harness connector terminal and control valve with TCM harness
connector terminal. Refer to AT- 1 0 9 , "
Wiring Diagram — AT — STSIG" .
4. If OK, check harness for short to ground and short to power.
OK or NG
OK >> Replace the control valve with TCM. Refer to AT- 2 4 2 , "Control Valve with TCM and A/T Fluid Tem-
perature Sensor 2" .
NG >> Replace open circuit or short to ground and short to power in harness or connectors.
4. CHECK DTC
Perform “DTC Confirmation Procedure”.

Refer to AT- 1 0 8 , "DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.

AT-112
DTC P0705 PARK/NEUTRAL POSITION SWITCH
Revision: 2004 November 2004 FX35/FX45
DTC P0705 PARK/NEUTRAL POSITION SWITCHPFP:32006
DescriptionACS007AX

The park/neutral position (PNP) switch includes a transmission range switch.

The transmission range switch detects the selector lever position and sends a signal to the TCM.
CONSULT-II Reference ValueACS007AY
On Board Diagnosis LogicACS007AZ

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “PNP SW/CIRC” with CONSULT-II or P0705 without CONSULT-II is detected
under the following conditions.
–When TCM does not receive the correct voltage signal from the PNP switch 1, 2, 3, 4 based on the gear
position.
–When no other position but “P” position is detected from “N” positions.
Possible CauseACS007B0

Harness or connectors
[Park/neutral position (PNP) switch 1, 2, 3, 4 and TCM circuit is open or shorted.]

Park/neutral position (PNP) switch 1, 2, 3, 4
DTC Confirmation ProcedureACS007B1
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 “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
3. Start engine.
4. Drive vehicle and maintain the following conditions for at least 2
consecutive seconds.
THRTL POS SEN: More than 1.2V
5. If DTC is detected, go to AT- 11 4 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “With CONSULT-II”.
Item name Condition Display value
SLCTLVR POSISelector lever in “N” and “P” positions. N/P
Selector lever in “R” position. R
Selector lever in “D” position. D
SAT014K

DTC P0705 PARK/NEUTRAL POSITION SWITCH
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Revision: 2004 November 2004 FX35/FX45
Wiring Diagram — AT — PNP/SWACS007B2
TCWM0248E