Nissan Maxima Service and Repair Manual: P1777 step motor
Description
The step motor changes the step by 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.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION: Always drive vehicle at a safe speed.
NOTE: Immediately after performing any "DTC CONFIRMATION PROCEDURE", always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.CHECK DTC DETECTION
With CONSULT
-
Start engine.
-
Drive vehicle for at least 5 consecutive seconds.
-
Perform "Self Diagnostic Results" in "TRANSMISSION".
With GST
Follow the procedure "With CONSULT".
Diagnosis Procedure
Regarding Wiring Diagram information, refer to TM-126, "Wiring Diagram".
1.CHECK STEP MOTOR CIRCUIT
-
Turn ignition switch OFF.
-
Disconnect TCM connector.
-
Check resistance between TCM vehicle side harness connector terminals.
4. Check resistance between TCM vehicle side harness connector terminals and ground.
2.CHECK HARNESS BETWEEN TCM AND CVT UNIT (STEP MOTOR) (PART 1)
-
Disconnect CVT unit connector.
-
Check continuity between TCM vehicle side harness connector terminals and CVT unit vehicle side harness connector terminals.
3.CHECK HARNESS BETWEEN TCM AND CVT UNIT (STEP MOTOR) (PART 2)
Check continuity between TCM vehicle side harness connector terminals and ground.
4.CHECK STEP MOTOR
Check step motor. Refer to TM-111, "Component Inspection (Step Motor)".
5.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Component Inspection (Step Motor)
1.CHECK STEP MOTOR
1. Check resistance between CVT unit connector terminals.
2. Check resistance between CVT unit connector terminals and ground.
P1745 line pressure control
Description
The line pressure solenoid valve regulates the oil pump
discharge pressure to suit the driving condition in
response to a signal sent from the TCM.
DTC Logic
DTC DETECTION LOGIC
...
P1778 step motor
Description
The step motor changes the step by 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 pulle ...
Other materials:
Owner's Manual/Service Manual order information
Genuine NISSAN Service Manuals for this model
year and prior can be purchased. A Genuine
NISSAN Service Manual is the best source of
service and repair information for your vehicle.
This manual is the same one used by the factorytrained
technicians working at NISSAN dealerships.
Genuine NI ...
Headlamp
Description
Headlamp lighting when theft warning system is in alarm
phase.
Component Function Check
1.CHECK HEADLAMP OPERATION
Check if headlamps operate by lighting switch.
Diagnosis Procedure
1.CHECK HEADLAMP OPERATION
Refer to EXL-6, "Work Flow" (xenon type) or EXL-171,
"Work Flow" (ha ...
How to park with predicted course lines
WARNING
If the tires are replaced with different
sized tires, the predicted course lines
may be displayed incorrectly.
On a snow-covered or slippery road,
there may be a difference between the
predicted course line and the actual
course line.
If the battery is disconnected or becomes
discha ...
Nissan Maxima Owners Manual
- Illustrated table of contents
- Safety-Seats, seat belts and supplemental restraint system
- Instruments and controls
- Pre-driving checks and adjustments
- Monitor, climate, audio, phone and voice recognition systems
- Starting and driving
- In case of emergency
- Appearance and care
- Do-it-yourself
- Maintenance and schedules
- Technical and consumer information
Nissan Maxima Service and Repair Manual
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