Nissan Murano: Dtc/circuit Diagnosis / P0742 Torque Converter
DTC DETECTION LOGIC
| DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition | |
| P0742 |
TORQUE CONVERTER (Torque Converter Clutch Circuit Stuck On) |
Diagnosis condition |
When all of the following conditions are satisfied:
|
| Signal | — | ||
| Threshold | Differences between engine speed and input speed: 40 rpm or less. | ||
| Diagnosis delay time | Maintained for 5 seconds or more | ||
POSSIBLE CAUSE
-
Harness or connector (Torque converter clutch solenoid valve circuit is shorted to power supply)
-
Torque converter clutch solenoid valve
-
Torque converter
-
Control valve
FAIL-SAFE
-
Start is slow
-
Engine stops when shift to “D” position during stopping the Nissan Murano vehicle.
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” is previously conducted, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.
>>
GO TO 2.
CHECK DTC DETECTION
-
Start the engine.
-
Maintain the following conditions for 5 seconds or more.
CAUTION:
Always drive at a safe speed.
Shift position : “D” position Accelerator pedal position : 1.0/8 or more Nissan Murano Vehicle speed : 1 - 15 km/h (0.6 - 9 MPH) Brake pedal : Depress* *: Keep depressing the brake pedal moderately not to accelrate the Nissan Murano vehicle.
-
Check the first trip DTC.
Is “P0742” detected?
YES>>Go to DTC Diagnosis Procedure.
NO-1>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2>>Confirmation after repair: INSPECTION END
CHECK CIRCUIT BETWEEN TCM AND CVT UNIT
-
Turn ignition switch OFF.
-
Disconnect TCM connector and CVT unit connector.
-
Check continuity between TCM harness connector terminal and CVT unit harness connector terminal.
TCM CVT unit Continuity Connector Terminal Connector Terminal 25 38 F44 5 Existed
Is the inspection result normal?
YES>>GO TO 2.
NO>>Repair or replace malfunctioning parts.
CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE CIRCUIT
Check resistance between CVT unit harness connector terminal and ground.
| CVT unit | — | Condition | Resistance | |
|---|---|---|---|---|
| Connector | Terminal | |||
| F209 | 5 | Ground | CVT fluid temperature: 20°C (68°F) | 5.5 – 7.0 Ω |
| CVT fluid temperature: 50°C (122°F) | 6.0 – 8.0 Ω | |||
| CVT fluid temperature: 80°C (176°F) | 6.5 – 8.5 Ω | |||
Is the inspection result normal?
YES>>INSPECTION END
NO>>GO TO 3.
CHECK CIRCUIT BETWEEN CVT UNIT AND CONTROL VALVE
-
Disconnect control valve connector. Refer to Removal and Installation .
-
Check continuity between CVT unit harness connector terminal and control valve harness connector terminal.
| CVT unit | Control valve | Continuity | ||
|---|---|---|---|---|
| Connector | Terminal | Connector | Terminal | |
| F209 | 5 | F207 | 3 | Existed |
Is the inspection result normal?
YES>>GO TO 4.
NO>>Replace terminal cord assembly. Refer to Removal and Installation .
CHECK CIRCUIT BETWEEN CONTROL VALVE AND GROUND
Check resistance between control valve harness connector terminal and ground.
| Control valve | — | Condition | Resistance |
|---|---|---|---|
| Terminal | |||
| 3 | Ground | CVT fluid temperature: 20°C (68°F) | 5.5 – 7.0 Ω |
| CVT fluid temperature: 50°C (122°F) | 6.0 – 8.0 Ω | ||
| CVT fluid temperature: 80°C (176°F) | 6.5 – 8.5 Ω |
Is the inspection result normal?
YES>>INSPECTION END
NO>>There is malfunction of torque converter clutch solenoid valve. Replace control valve assembly. Refer to Removal and Installation .
P0741 Torque Converter
DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P0741
TORQUE CONVERTER
(Torque Converter Clutch Circuit Performance/Stuck Off)
Diagnosis condition
When all of the following conditions are satisfied:
TCM power supply voltage: More than 11 V
LU pressure: More than 0...
P0746 Pressure Control Solenoid a
DTC Description
DTC DETECTION LOGIC DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P0746
PC SOLENOID A
(Pressure Control Solenoid A Performance/Stuck Off)
1
Diagnosis condition
When all of the following conditions are satisfied:
Engine speed: More than 600 rpm
Primary pulley speed: More than 450 rpm
Idle is not being detected...
Other information:
Nissan Murano (Z52) 2015-2024 Service Manual: Steering Switches
Diagnosis Procedure CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE Ignition switch OFF. Disconnect combination switch connector. Check resistance between the terminals of combination switch connector. Combination switch Condition Resistance Ω (Approx...
Nissan Murano (Z52) 2015-2024 Owners Manual: Warning lights
For additional information, refer to “Vehicle information display” in this section. Anti-lock Braking System (ABS) warning light or Whenthe ignition switch is placed in theON position, the ABS warning light illuminates and then turns off. This indicates the ABS is operational...
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Passenger’s side
