Nissan Sentra Service Manual: Air conditioning cut control
AIR CONDITIONING CUT CONTROL : System Description
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
| Sensor | Input Signal to ECM | ECM function | Actuator | |
| Crankshaft position sensor (POS) | Engine speed* Piston position | Air conditioner cut control | IPDM E/R
↓ Air conditioner relay ↓ Compressor |
|
| Camshaft position sensor (PHASE) | ||||
| Engine coolant temperature sensor | Engine coolant temperature | |||
| Accelerator pedal position sensor | Accelerator pedal position | |||
| Battery | Battery voltage* | |||
| Refrigerant pressure sensor | Refrigerant pressure | |||
| EPS control unit | CAN communication | EPS operation signal | ||
| Combination meter | CAN communication | Vehicle speed signal | ||
| A/C auto amp. | CAN communication |
|
||
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.
- When the accelerator pedal is fully depressed.
- When cranking the engine.
- At high engine speeds.
- When the engine coolant temperature becomes excessively high.
- When operating power steering during low engine speed or low vehicle speed.
- When engine speed is excessively low.
- When refrigerant pressure is excessively low or high.
Fuel filler cap warning system
SYSTEM DIAGRAM
SYSTEM DESCRIPTION
The fuel filler cap warning system alerts the driver to the prevention of the
fuel filler being left uncapped and
malfunction occurrences after refueling, by ...
Cooling fan control
SYSTEM DIAGRAM
SYSTEM DESCRIPTION
ECM controls cooling fan speed corresponding to vehicle speed, engine coolant
temperature, refrigerant pressure,
air conditioner ON signal. Then control syst ...
Other materials:
Symptom diagnosis
Squeak and rattle trouble diagnoses
Work Flow
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist
when the noise occurs. Use the Diagnostic
Worksheet during the interview to document the facts and conditions when the
noise occurs and any
custome ...
CVT Oil warmer
Exploded View
Transaxle assembly
O-ring
CVT oil warmer
CVT fluid
Removal and Installation
REMOVAL
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns
could occur from high pressure
coolant escaping from the radiator. Wrap a thick cloth around the cap ...
Ipdm-e branch line circuit
Diagnosis procedure
1.Check connector
Turn the ignition switch off.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the ipdm e/r for damage, bend and
loose connection (unit side
and connector side).
Is the inspection result normal?
Yes ...