Nissan Murano Z50 (2006 year). Manual — part 67
DTC P1778 STEP MOTOR - FUNCTION
CVT-177
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision: 2006 August
2006 Murano
WITH GST
Follow the procedure “WITH CONSULT-II”.
Diagnostic Procedure
NCS0018L
1.
CHECK STEP MOTOR
With CONSULT-II
It is monitoring whether “GEAR RATIO: 2.37 - 0.43” changes similarly to “STM STEP: -20 - 190” by DATA
MONITOR mode. Refer to
Without CONSULT-II
Inspect the engine speed (rise and descend), vehicle speed, throttle position, and check shift change. Refer to
CVT-236, "Vehicle Speed When Shifting Gears"
OK or NG
OK
>> INSPECTION END
NG
>> Replace the transaxle assembly. Refer to
CVT-229, "Removal and Installation"
.
CVT-178
SECOND POSITION SWITCH
Revision: 2006 August
2006 Murano
SECOND POSITION SWITCH
PFP:34910
Description
NCS0018M
Second position switch is built into CVT control device. When selector lever is in “S” or “L” position, 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
NCS0018N
Remarks: Specification data are reference values.
Item name
Condition
Display value
SPORT MODE SW
Selector lever in “S” and “L” positions
ON
Selector lever in other positions
OFF
SECOND POSITION SWITCH
CVT-179
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision: 2006 August
2006 Murano
Wiring Diagram — CVT — SPSW
NCS0018O
TCWA0162E
CVT-180
SECOND POSITION SWITCH
Revision: 2006 August
2006 Murano
TCM terminal data are reference values, measured between each terminal and ground.
Diagnostic Procedure
NCS0018P
1.
CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis check. Refer to
CVT-65, "SELF-DIAGNOSTIC RESULT MODE"
Is any malfunction of the “U1000 CAN COMM CIRCUIT” indicated in the results?
YES
>> Check CAN communication line. Refer to
CVT-72, "DTC U1000 CAN COMMUNICATION LINE"
.
NO
>> GO TO 2.
2.
CHECK SECOND POSITION SWITCH SIGNAL
With CONSULT-II
1.
Turn ignition switch ON.
2.
Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“TRANSMISSION” with CONSULT-II.
3.
Read out ON/OFF switching action of the “SPORT MODE SW”.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 3.
3.
CHECK SECOND POSITION SWITCH
Check second position switch. Refer to
CVT-181, "Component Inspection"
OK or NG
OK
>> GO TO 4.
NG
>> Repair or replace damaged parts.
4.
CHECK SELF-DIAGNOSTIC RESULTS (UNIFIED METER AND A/C AMP)
Perform self-diagnosis check. Refer to
DI-15, "CONSULT-II Function (METER A/C AMP)"
.
Is any malfunction detected by self-diagnostic?
YES
>> Check the malfunctioning system.
NO
>> GO TO 5.
5.
CHECK SELF-DIAGNOSTIC RESULTS (COMBINATION METER)
Perform self-diagnosis check. Refer to
DI-15, "Self-Diagnosis Mode of Combination Meter"
.
Is any malfunction detected by self-diagnostic?
YES
>> Check the malfunctioning system.
NO
>> GO TO 6.
Terminal
Wire
color
Item
Condition
Data (Approx.)
5
L
CAN-H
—
—
6
Y
CAN-L
—
—
Item name
Condition
Display value
SPORT MODE SW
Selector lever in “S” and
“L” positions
ON
Selector lever in other
positions
OFF
SCIA4517E
SECOND POSITION SWITCH
CVT-181
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision: 2006 August
2006 Murano
6.
CHECK SECOND POSITION SWITCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect CVT device connector and unified meter and A/C amp connector.
3.
Check continuity between CVT device harness connector termi-
nal and unified meter and A/C amp harness connector terminal.
4.
Check continuity between CVT device harness connector termi-
nal and ground.
5.
If OK, check harness for short to ground and short to power.
6.
Reinstall any part removed.
OK or NG
OK
>> INSPECTION END
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
Component Inspection
NCS0018Q
SECOND POSITION SWITCH
Check continuity between CVT device harness connector terminals.
Item
Connector
Terminal
Continuity
CVT device harness connector
M57
1
Yes
Unified meter and A/C amp har-
ness connector
M51
37
SCIA4592E
Item
Connec-
tor
Terminal
Continuity
CVT device har-
ness connector
M57
2 - Ground
Yes
SCIA4593E
Item
Condition
Connector
Terminal
Continuity
Second posi-
tion switch
Selector lever in
“S” and “L” posi-
tions
M57
1 - 2
Yes
Selector lever in
other positions
No
SCIA2041E
CVT-182
CVT INDICATOR CIRCUIT
Revision: 2006 August
2006 Murano
CVT INDICATOR CIRCUIT
PFP:24810
Description
NCS0018R
TCM sends the switch signals to unified meter and A/C amp via CAN communication line. Then manual mode
switch position is indicated on the CVT indicator.
CONSULT-II Reference Value
NCS0018S
Diagnostic Procedure
NCS0018T
1.
CHECK INPUT SIGNALS
With CONSULT-II
1.
Start engine.
2.
Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-II and read
out the value of “M GEAR POS”.
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 select lever is shifted to the “+ (up)” or “- (down)” side (1st
⇔
6th
gear).
OK or NG
OK
>> INSPECTION END
NG
>> Check the following.
CVT INDICATOR SYMPTOM CHART
Item name
Condition
Display value
M GEAR POS
During driving
1, 2, 3, 4, 5, 6
Items
Presumed location of trouble
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 CVT position indicator is not indicated.
Manual mode switch
●
Refer to
CVT-132, "DTC P0826 MANUAL MODE SWITCH
CVT main system (Fail-safe function actuated)
●
Refer to
CVT-65, "SELF-DIAGNOSTIC RESULT MODE"
The actual gear position changes, but the CVT position indicator
is not indicated.
Perform the self-diagnosis function.
●
Refer to
CVT-65, "SELF-DIAGNOSTIC RESULT MODE"
The actual gear position and the indication on the CVT position
indicator do not coincide.
Perform the self-diagnosis function.
●
Refer to
CVT-65, "SELF-DIAGNOSTIC RESULT MODE"
Only a specific position or positions is/are not indicated on the
CVT position indicator.
Check the meter control unit.
●
Refer to
TROUBLE DIAGNOSIS FOR SYMPTOMS
CVT-183
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision: 2006 August
2006 Murano
TROUBLE DIAGNOSIS FOR SYMPTOMS
PFP:00007
Wiring Diagram — CVT — NONDTC
NCS0018U
TCWB0122E
CVT-184
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 August
2006 Murano
TCWB0260E
TROUBLE DIAGNOSIS FOR SYMPTOMS
CVT-185
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision: 2006 August
2006 Murano
TCWA0258E
CVT-186
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 August
2006 Murano
TCM terminal data are reference values, measured between each terminal and ground.
Terminal
Wire
color
Item
Condition
Data (Approx.)
5
L
CAN-H
—
—
6
Y
CAN-L
—
—
8
SB
Back-up lamp
relay
Selector lever in “R” position.
0 V
Selector lever in other positions.
Battery voltage
13
G/W
ROM assembly
—
—
14
L/R
ROM assembly
—
—
15
BR/R
ROM assembly
—
—
42
W/R
Sensor ground
Always
0 V
46
L/O
Sensor power
—
4.5 - 5.5 V
—
0 V
TROUBLE DIAGNOSIS FOR SYMPTOMS
CVT-187
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision: 2006 August
2006 Murano
CVT Indicator Lamp Does Not Come On
NCS0018V
SYMPTOM:
CVT indicator lamp does not come on for about 2 seconds when turning ignition switch ON.
DIAGNOSTIC PROCEDURE
1.
CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis check. Refer to
CVT-65, "SELF-DIAGNOSTIC RESULT MODE"
.
Is any malfunction of the “U1000 CAN COMM CIRCUIT” indicated in the results?
YES
>> Check CAN communication line. Refer to
CVT-72, "DTC U1000 CAN COMMUNICATION LINE"
NO
>> GO TO 2.
2.
CHECK TCM POWER SOURCE
1.
Turn ignition switch ON.
2.
Check voltage between TCM connector terminals and ground.
Refer to
CVT-154, "Wiring Diagram — CVT — POWER"
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING ITEM
Check the following.
●
Harness for short or open between ignition switch and TCM connector terminal 10, 19
Refer to
CVT-154, "Wiring Diagram — CVT — POWER"
●
10 A fuse (No.83, located in the IPDM E/R). Refer to
CVT-154, "Wiring Diagram — CVT — POWER"
.
●
PG-3, "POWER SUPPLY ROUTING CIRCUIT"
OK or NG
OK
>> GO TO 4.
NG
>> Repair or replace damaged parts.
4.
CHECK TCM GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector.
3.
Check continuity between TCM connector terminals and ground.
Refer to
CVT-154, "Wiring Diagram — CVT — POWER"
OK or NG
OK
>> GO TO 5.
NG
>> Repair open circuit or short to ground or short to power
in harness or connectors.
Name
Connec-
tor
Terminal
Voltage (Approx.)
Power supply
F103
10 - Ground
Battery voltage
19 - Ground
Battery voltage
SCIA4737E
Name
Connector
Terminal
Continuity
Ground
F104
25 - Ground
Yes
48 - Ground
SCIA2671E
CVT-188
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 August
2006 Murano
5.
DETECT MALFUNCTIONING ITEM
Check the following.
●
Harness and fuse for short or open between ignition switch and CVT indicator lamp
OK or NG
OK
>> GO TO 6.
NG
>> Repair or replace damaged parts.
6.
CHECK SYMPTOM
Check again. Refer to
CVT-48, "Check before Engine Is Started"
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 7.
7.
CHECK COMBINATION METERS
Check combination meters. Refer to
OK or NG
OK
>> INSPECTION END
NG
>> Repair or replace damaged parts.
TROUBLE DIAGNOSIS FOR SYMPTOMS
CVT-189
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision: 2006 August
2006 Murano
Engine Cannot Be Started in “P” and “N” Position
NCS0018W
SYMPTOM:
●
Engine cannot be started with selector lever in “P” or “N” position.
●
Engine can be started with selector lever in “D”, “M” or “R” position. (With manual mode)
●
Engine can be started with selector lever in “D”, “S”, “L” or “R” position. (Without manual mode)
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis check. Refer to
CVT-65, "SELF-DIAGNOSTIC RESULT MODE"
Do the self-diagnostic results indicate PNP switch circuit or start signal circuit?
YES
>> Check PNP switch circuit or start signal circuit. Refer to
CVT-81, "DTC P0705 PARK/NEUTRAL
or
CVT-75, "DTC P0615 START SIGNAL CIRCUIT"
NO
>> GO TO 2.
2.
CHECK CONTROL CABLE
Check control cable. Refer to
CVT-212, "Checking of CVT Position"
OK or NG
OK
>> GO TO 3.
NG
>> Adjust control cable. Refer to
.
3.
CHECK STARTING SYSTEM
Check starting system. Refer to
OK or NG
OK
>> INSPECTION END
NG
>> Repair or replace damaged parts.
SCIA2001E
CVT-190
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 August
2006 Murano
In “P” Position, Vehicle Moves Forward or Backward When Pushed
NCS0018X
SYMPTOM:
Vehicle moves when it is pushed forward or backward with selector lever in “P” position.
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis check. Refer to
CVT-65, "SELF-DIAGNOSTIC RESULT MODE"
Do the self-diagnostic results indicate PNP switch circuit?
YES
>> Check PNP switch circuit. Refer to
CVT-81, "DTC P0705 PARK/NEUTRAL POSITION SWITCH"
.
NO
>> GO TO 2.
2.
CHECK CONTROL CABLE
Check control cable. Refer to
CVT-212, "Checking of CVT Position"
OK or NG
OK
>> GO TO 3.
NG
>> Adjust control cable. Refer to
3.
CHECK SYMPTOM
Check again. Refer to
OK or NG
OK
>> INSPECTION END
NG
>> Replace the transaxle assembly. Refer to
CVT-229, "Removal and Installation"
SCIA2001E
TROUBLE DIAGNOSIS FOR SYMPTOMS
CVT-191
D
E
F
G
H
I
J
K
L
M
A
B
CVT
Revision: 2006 August
2006 Murano
In “N” Position, Vehicle Moves
NCS0018Y
SYMPTOM:
Vehicle moves forward or backward when selecting “N” position.
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis check. Refer to
CVT-65, "SELF-DIAGNOSTIC RESULT MODE"
Do the self-diagnostic results indicate PNP switch circuit?
YES
>> Check PNP switch circuit. Refer to
CVT-81, "DTC P0705 PARK/NEUTRAL POSITION SWITCH"
NO
>> GO TO 2.
2.
CHECK CONTROL CABLE
Check control cable. Refer to
CVT-212, "Checking of CVT Position"
OK or NG
OK
>> GO TO 3.
NG
>> Adjust control cable. Refer to
.
3.
CHECK CVT FLUID LEVEL
Check CVT fluid level. Refer to
OK or NG
OK
>> GO TO 4.
NG
>> Refill CVT fluid.
4.
CHECK SYMPTOM
Check again. Refer to
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 5.
5.
CHECK TCM
1.
Check TCM input/output signals. Refer to
CVT-57, "TCM Input/Output Signal Reference Values"
.
2.
If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK
>> Replace the transaxle assembly. Refer to
CVT-229, "Removal and Installation"
.
NG
>> Repair or replace damaged parts.
SCIA2001E
SAT638A
CVT-192
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 August
2006 Murano
Large Shock “N”
→
“R” Position
NCS0018Z
SYMPTOM:
There is large shock when shifting from “N” to “R” position.
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis check. Refer to
CVT-65, "SELF-DIAGNOSTIC RESULT MODE"
Is any malfunction detected by self-diagnosis?
YES
>> Check the malfunctioning system. Refer to
NO
>> GO TO 2.
2.
CHECK ENGINE IDLE SPEED
Check the engine idle speed. Refer to
EC-73, "Idle Speed and Ignition Timing Check"
.
OK or NG
OK
>> GO TO 3.
NG
>> Repair.
3.
CHECK CVT FLUID LEVEL
Check CVT fluid level. Refer to
.
OK or NG
OK
>> GO TO 4.
NG
>> Refill CVT fluid.
4.
CHECK LINE PRESSURE
Check line pressure at idle. Refer to
.
OK or NG
OK
>> GO TO 5.
NG
>> Check the malfunctioning item. Refer to
5.
SYMPTOM CHECK
Check again. Refer to
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 6.
SAT638A
SAT494G
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