Nissan Murano Z50 (2003 year). Manual — part 70
DTC P1726 ELECTRIC THROTTLE CONTROL SYSTEM
CVT-161
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision; 2004 April
2003 Murano
DTC P1726 ELECTRIC THROTTLE CONTROL SYSTEM
PFP:23710
Description
ACS002KG
Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle
position sensor etc. The actuator sends a signal to the ECM, and ECM sends signals to TCM with CAN com-
munication.
On Board Diagnosis Logic
ACS002U5
●
This is not an OBD-II self-diagnostic item.
●
Diagnostic trouble code “ELEC TH CONTROL·” with CONSULT-II is detected when the electronically con-
trolled throttle for ECM is malfunctioning.
Possible Cause
ACS002KI
Harness or connectors
(The sensor circuit is open or shorted.)
DTC Confirmation Procedure
ACS002KJ
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, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-II
1.
Turn ignition switch “ON”. (Do not start engine.)
2.
Select “DATA MONITOR” mode for “TRANSMISSION” with
CONSULT-II.
3.
Start engine and let it idle for 5 second.
4.
CVT-161, "Diagnostic Procedure"
Diagnostic Procedure
ACS002KK
1.
CHECK DTC WITH ECM
With CONSULT-II
1.
Turn ignition switch “ON”. (Do not start engine.)
2.
Select “SELF-DIAG RESULTS” mode for “ENGINE” with CON-
SULT-II. Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Check the DTC Detected Item. Refer to
●
If CAN communication line is detected, go to
"DTC U1000 CAN COMMUNICATION LINE"
SCIA2272E
SCIA2272E
CVT-162
DTC P1726 ELECTRIC THROTTLE CONTROL SYSTEM
Revision; 2004 April
2003 Murano
2.
CHECK DTC
Perform DTC Confirmation Procedure.
●
Refer to
CVT-161, "DTC Confirmation Procedure"
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING ITEM
Check the following:
●
The TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK
>> Replace the TCM. Refer to
CVT-8, "Precautions for TCM and CVT Assembly Replacement"
NG
>> Repair or replace damaged parts.
DTC P1740 LOCK-UP SELECT SOLENOID VALVE CIRCUIT
CVT-163
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision; 2004 April
2003 Murano
DTC P1740 LOCK-UP SELECT SOLENOID VALVE CIRCUIT
PFP:31941
Description
ACS002U6
●
Lock-up select solenoid valve switches, which controls lock-up clutch pressure or forward clutch pressure
(reverse brake pressure).
●
When controlling lock-up clutch, turns OFF. When controlling forward clutch, turns ON.
CONSULT-II Reference Value
ACS002KM
On Board Diagnosis Logic
ACS002KN
●
This is an OBD-II self-diagnostic item.
●
Diagnostic trouble code “LU-SLCT SOL/CIRC” with CONSULT-II or P1740 without CONSULT-II is
detected under the following conditions.
–
When TCM compares target value with monitor value and detects an irregularity.
Possible Cause
ACS002KO
●
Lock-up select solenoid valve
●
Harness or connectors
(The solenoid circuit is open or shorted.)
DTC Confirmation Procedure
ACS002U7
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, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-II
1.
Turn ignition switch “ON”. (Do not start engine.)
2.
Select “DATA MONITOR” mode for “TRANSMISSION” with
CONSULT-II.
3.
Start engine and maintain the following conditions for at least 5
consecutive seconds.
SELECTOR LEVER: “D” position and “N” position
(At each time, wait for 5 seconds.)
4.
CVT-165, "Diagnostic Procedure"
WITH GST
Follow the procedure “With CONSULT-II”.
Item name
Condition
Display value
LUSEL SOL OUT
N position
ON
Wait at least for 5 seconds with the selector
lever in D position
OFF
SCIA2272E
CVT-164
DTC P1740 LOCK-UP SELECT SOLENOID VALVE CIRCUIT
Revision; 2004 April
2003 Murano
Wiring Diagram - CVT - L/USSV
ACS002U8
TCWA0154E
DTC P1740 LOCK-UP SELECT SOLENOID VALVE CIRCUIT
CVT-165
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision; 2004 April
2003 Murano
Remarks: Specification data are reference values.
Diagnostic Procedure
ACS002U9
1.
CHECK VALVE RESISTANCE
1.
Turn ignition switch “OFF”.
2.
Disconnect CVT unit harness connector.
3.
Check resistance between terminal and ground.
OK or NG
OK >> GO
TO
2.
NG
>> Replace the transaxle assembly. Refer to
2.
CHECK POWER SOURCE CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect TCM connector.
3.
Check continuity between CVT unit harness connector and TCM
connector.
4.
If OK, check harness for short to ground and short to power.
5.
Reinstall any part removed.
OK or NG
OK
>> GO TO 3.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
CHECK DTC
Check again.
●
Refer to
CVT-163, "DTC Confirmation Procedure"
.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 4.
4.
PERFORM TCM INSPECTION
1.
Perform TCM input/output signal inspection.
2.
If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK
>> INSPECTION END
NG
>> 1. Repair or replace damaged parts.
CVT-8, "Precautions for TCM and CVT Assembly Replacement"
.
Terminal
No.
Wire color
Item
Condition
Judgement standard
(Approx.)
4
L/Y
Lock-up select
solenoid valve
N position
Battery voltage
Wait at least for 5 seconds with the selector lever in D position.
0V
Solenoid Valve
Connector
No.
Terminal No.
Resistance
(Approx.)
Lock-up select
solenoid valve
F6
13 - Ground
6.0 - 19.0
Ω
SCIA2038E
Item
Connector No.
Terminal No.
(Wire color)
Continuity
TCM
F103
4 (L/Y)
Yes
CVT unit harness connector
F6
13 (L/Y)
SCIA2039E
CVT-166
DTC P1740 LOCK-UP SELECT SOLENOID VALVE CIRCUIT
Revision; 2004 April
2003 Murano
Component Inspection
ACS002UA
LOCK-UP SELECT SOLENOID VALVE
1.
Turn ignition switch “OFF”.
2.
Disconnect CVT unit harness connector.
3.
Check resistance between terminal and ground.
4.
If NG, replace transaxle assembly. Refer to
.
Solenoid Valve
Connector No.
Terminal No.
Resistance
(Approx.)
Lock-up select
solenoid valve
F6
13 - Ground
6.0 - 19.0
Ω
SCIA2038E
DTC P1745 LINE PRESSURE CONTROL
CVT-167
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision; 2004 April
2003 Murano
DTC P1745 LINE PRESSURE CONTROL
PFP:31036
Description
ACS002KR
The pressure control solenoid valve A (line pressure solenoid valve) regulates the oil pump discharge pres-
sure to suit the driving condition in response to a signal sent from the TCM.
On Board Diagnosis Logic
ACS002UB
●
This is not an OBD-II self-diagnostic item.
●
Diagnostic trouble code “L/PRESS CONTROL” with CONSULT-II is detected when TCM detects the unex-
pected line pressure.
Possible Cause
ACS002KT
●
TCM
DTC Confirmation Procedure
ACS002UC
CAUTION:
●
Always drive vehicle at a safe speed.
●
Be careful not to rev engine into the red zone on the tachometer.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 5 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-II
1.
Turn ignition switch “ON” and select “DATA MONITOR” mode for
“TRANSMISSION” with CONSULT-II.
2.
Make sure that output voltage of CVT fluid temperature sensor
is within the range below.
FLUID TEMP SEN: 1.0 - 2.0V
If out of range, drive the vehicle to decrease the voltage
(warm up the fluid) or stop engine to increase the voltage
(cool down the fluid)
If the check result is NG, go to “Diagnostic Procedure”,
.
Diagnostic Procedure
ACS002UD
1.
CHECK DTC
1.
Turn ignition switch “ON”. (Do not start engine.)
2.
Select SELF-DIAG RESULTS item at SELECT DIAG MODE.
3.
Erase self-diagnostic results. Refer to
4.
Turn ignition switch OFF, and wait for 5 seconds or more.
5.
Start engine.
6.
Confirm self-diagnostic results again. Refer to
Is the line pressure control displayed?
YES
>> Replace the TCM. Refer to
TCM and CVT Assembly Replacement"
NO
>> INSPECTION END
SCIA2272E
SCIA5492E
CVT-168
DTC P1777 STEP MOTOR - CIRCUIT
Revision; 2004 April
2003 Murano
DTC P1777 STEP MOTOR - CIRCUIT
PFP:31020
Description
ACS00216
●
The step motor changes the step with turning 4 coils ON/OFF according to the signal from TCM.
As a result, the flow of line pressure to primary pulley is changed and pulley ratio is controlled.
CONSULT-II Reference Value
ACS0032M
Remarks: Specification data are reference values.
On Board Diagnosis Logic
ACS0032N
●
This is an OBD-II self-diagnostic item.
●
Diagnostic trouble code “STEP MOTOR/CIRC” with CONSULT-II or P1777 without CONSULT-II is
detected under the following conditions.
–
When in operating step motor ON and OFF, there is no proper change in the voltage of the terminal TCM
which corresponds to it.
Possible Cause
ACS0032O
●
Step motor
●
Harness or connectors
(The step motor circuit is open or shorted.)
DTC Confirmation Procedure
ACS0032P
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 5 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-II
1.
Turn ignition switch “ON” and select “DATA MONITOR” mode for
“TRANMISSION” with CONSULT-II.
Monitor item
Condition
Specification
STM STEP
The vehicle runs a safe condition and
press/depress accelerator pedal.
-20 step - 190 step
SMCOIL A
Changes ON
⇔
OFF.
SMCOIL B
Changes ON
⇔
OFF.
SMCOIL C
Changes ON
⇔
OFF.
SMCOIL D
Changes ON
⇔
OFF.
SCIA2272E
DTC P1777 STEP MOTOR - CIRCUIT
CVT-169
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision; 2004 April
2003 Murano
2.
Drive vehicle for at least 5 consecutive seconds.
If the check result is “NG”, go to
.
WITH GST
Follow the procedure “With CONSULT-II”.
SCIA5492E
CVT-170
DTC P1777 STEP MOTOR - CIRCUIT
Revision; 2004 April
2003 Murano
Wiring Diagram — CVT — STM
ACS00217
TCWA0158E
DTC P1777 STEP MOTOR - CIRCUIT
CVT-171
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision; 2004 April
2003 Murano
Remarks: Specification data are reference values.
Diagnostic Procedure
ACS00218
1.
CHECK INPUT SIGNAL
With CONSULT-II
1.
Start engine.
2.
Select “SELECTION FROM MENU” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II.
3.
Vehicle start and read out the value of “STM STEP”, “SMCOIL A”, “SMCOIL B”, “SMCIOL C”, and
“SMCOIL D”.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 2.
2.
CHECK STEP MOTOR CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect CVT unit connector and TCM connector.
3.
Check continuity between CVT unit harness connector and TCM
connector.
4.
If OK, check harness for short to ground and short to power.
5.
If OK, check continuity between body ground and CVT assembly.
6.
Reinstall any part removed.
OK or NG
OK
>> GO TO 3.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
CHECK STEP MOTOR
Check step motor Refer to
CVT-172, "Component Inspection"
OK or NG
OK
>> GO TO 4.
NG
>> Repair or replace damaged parts.
Terminal
No.
Wire color
Item
Condition
Judgement standard
(Approx.)
11
G/R
Step motor
Within 2 seconds after key switch “ON”, check the time measure-
ment by using the pulse width measurement function (Hi level) of
CONSULT-II.
●
CONSULT-II cable connect to data link connector.
●
This inspection cannot be measured by circuit tester.
30.0 msec
12
O/B
10.0 msec
20
R
30.0 msec
21
R/G
10.0 msec
Item
Connector No.
Terminal No.
(Wire color)
Continuity
TCM
F103
11 (G/R)
Yes
CVT unit harness connector
F6
6 (G/R)
TCM
F103
12 (O/B)
Yes
CVT unit harness connector
F6
7 (O/B)
TCM
F103
20 (R)
Yes
CVT unit harness connector
F6
8 (R)
TCM
F103
21 (R/G)
Yes
CVT unit harness connector
F6
9 (R/G)
SCIA3704E
CVT-172
DTC P1777 STEP MOTOR - CIRCUIT
Revision; 2004 April
2003 Murano
4.
CHECK DTC
Check again.
●
Refer to
CVT-168, "DTC Confirmation Procedure"
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 5.
5.
CHECK TCM INSPECTION
1.
Perform TCM input/output signal inspection.
2.
If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK
>> INSPECTION END
NG
>> Repair or replace damaged parts.
Component Inspection
ACS00219
STEP MOTOR
1.
Turn ignition switch “OFF”.
2.
Disconnect CVT unit harness connector.
3.
Check resistance between terminals.
4.
If NG, replace transaxle assembly. Refer to
CVT-197, "Removal and Installation"
Control valve
Connector No.
Terminal No.
Resistance
(Approx.)
Step motor
F6
6 - 7
30
Ω
8 - 9
6 - Ground
15
Ω
7 - Ground
8 - Ground
9 - Ground
SCIA2040E
DTC P1778 STEP MOTOR - FUNCTION
CVT-173
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision; 2004 April
2003 Murano
DTC P1778 STEP MOTOR - FUNCTION
PFP:31947
Description
ACS0021D
●
The step motor's 4 aspects of ON/OFF change according to the signal from TCM.
As a result, the flow of line pressure to primary pulley is changed and pulley ratio is controlled.
●
This diagnosis item detects when electrical system is OK, but mechanical system is NG.
●
This diagnosis item detects when the state of the changing the speed mechanism in unit does not operate
normally.
CONSULT-II Reference Value
ACS0032Q
Remarks: Specification data are reference values.
On Board Diagnosis Logic
ACS0032R
●
This is an OBD-II self-diagnostic item.
●
Diagnostic trouble code “STEP MOTOR/FNCTN” with CONSULT-II or P1778 without CONSULT-II is
detected under the following conditions.
–
When not changing the pulley ratio according to the instruction of TCM.
Possible Cause
ACS0032S
●
Step motor
DTC Confirmation Procedure
ACS0032T
CAUTION:
●
Always drive vehicle at a safe speed.
●
Be careful not to rev engine into the red zone on the tachometer.
●
Before starting “DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE”, confirm
“Hi” or “Mid” or “Low” fixation by “PRI SPEED” and “VEHICLE SPEED” on “DATA MONITOR
MODE”.
●
If hi-geared fixation, go to diagnostic procedure soon.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 5 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-II
1.
Turn ignition switch “ON” and select “DATA MONITOR” mode for
“TRANSMISSION” with CONSULT-II.
2.
Make sure that output voltage of CVT fluid temperature sensor
is within the range below.
FLUID TEMP SEN: 1.0 - 2.0V
If out of range, drive the vehicle to decrease the voltage
(warm up the fluid) or stop engine to increase the voltage
(cool down the fluid)
Monitor item
Condition
Specification (Approximately)
STM STEP
The vehicle runs a safe condi-
tion and press/depress acceler-
ator pedal.
-20 step - 190 step
GEAR RATIO
2.37 - 0.43
SCIA2272E
CVT-174
DTC P1778 STEP MOTOR - FUNCTION
Revision; 2004 April
2003 Murano
3.
Select “DATA MONITOR” mode for “TRANSMISSION” with
CONSULT-II.
4.
Start engine and maintain the following conditions for at least 30
consecutive seconds.
TEST START FROM 0 km/h (0 MPH)
CONSTANT ACCELERATION: Keep 30 sec or more
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACC PEDAL OPEN: More than 1/8
Selector lever: D position
ENG SPEED: 450 rpm or more
If the check result is NG, GO TO
.
WITH GST
Follow the procedure “With CONSULT-II”.
Diagnostic Procedure
ACS0032U
1.
CHECK STEP MOTOR
●
It is monitoring whether “CVT ratio: 2.37 - 0.43” changes similarly to “STM STEP: -20 - 190” by DATA
MONITOR mode.
●
If no CONSULT-II, inspect the engine speed (rise and descend), vehicle speed, throttle opening angle,
and check shift change.
OK or NG
OK
>> INSPECTION END
NG
>> Replace the transaxle assembly. Refer to
CVT-197, "Removal and Installation"
SCIA5492E
SECOND POSITION SWITCH
CVT-175
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision; 2004 April
2003 Murano
SECOND POSITION SWITCH
PFP:34910
Description
ACS0032V
Second position switch is built into CVT control device.
When selector lever is in “S” or “L” positions, second position switch turns ON and sends a signal to unified
meter and A/C amp.
Then signal is transferred to TCM with CAN communications to improve engine brake performance.
CONSULT-II Reference Value
ACS00332
Remarks: Specification data are reference values.
Possible Cause
ACS0032Y
●
Harness or connectors
(These switch circuits are open or shorted.)
●
Second position switch (Into control device)
Monitor item
Condition
Specification
SECOND POS SW
Selector lever in “S” position
ON
Other than the above (except “L” position)
OFF
CVT-176
SECOND POSITION SWITCH
Revision; 2004 April
2003 Murano
Wiring Diagram — CVT — SPSW
ACS00333
TCWA0162E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст