2000 NISSAN PATROL Electronic Repair Manual

System Description
OUTLINE
Power window system consists of
+CPU (combined with power window main switch)
+four power window regulators
When ignition switch is in the ªONº position, power window can be operated depending on power window
sub/main switch condition.
OPERATIVE CONDITION
+Power windows can be raised or lowered with each sub-switch or the power window main switch located
on the driver's door trim when ignition switch is in the ªONº position and power window lock switch on the
driver's door trim is unlocked.
+When power window lock switch is locked, no windows can be raised or lowered except for driver's side
window.
+When ignition switch is in the ªONº position, to fully open/close the driver's side window, press down/
pull up completely on the automatic switch (main switch) and release it; it needs not be held. The win-
dow will automatically open/close all the way. To stop the window, pull up/press down then release the
switch.
+After turning ignition switch to OFF, the driver's side window can be raised or lowered for 15 minutes.
The timer control for supplying power after turning ignition switch to OFF will be canceled when the driv-
er's side door is open and then closed.
INTERRUPTION DETECTION FUNCTION
CPU (combined with power window main switch) monitors the power window regulator motor operation and
the power window position (full closed or other) for driver's power window by the signals from encoder and
limit switch in front power window regulator (driver's side).
When CPU (combined with power window main switch) detects interruption during the following close
operation in the driver's side door,
+automatic close operation when ignition switch is in the ªONº position
+automatic close operation during power window timer operation
+manual close operation during power window timer operation
CPU (combined with power window main switch) controls driver's power window regulator motor for open
and the power window will be lowered about 150 mm (5.91 in).
POWER WINDOW
EL-1115

Schematic
TEL585B
POWER WINDOW
EL-1116

Wiring Diagram Ð WINDOW Ð
TEL254M
POWER WINDOW
EL-1117

TEL255M
POWER WINDOW
Wiring Diagram Ð WINDOW Ð (Cont'd)
EL-1118

TEL256M
POWER WINDOW
Wiring Diagram Ð WINDOW Ð (Cont'd)
EL-1119

LHD WAGON MODELS
TEL257M
POWER WINDOW
Wiring Diagram Ð WINDOW Ð (Cont'd)
EL-1120

RHD WAGON MODELS
TEL258M
POWER WINDOW
Wiring Diagram Ð WINDOW Ð (Cont'd)
EL-1121

Trouble Diagnoses
Symptom Possible cause Repair order
None of the power windows can be
operated using any switch.1. 7.5A fuse, 40A fusible link and
M123circuit breaker
2. Power window main switch
ground circuit
3. Power window main switch1. Check 7.5A fuse [No.
8, located in fuse block (J/B)],
40A fusible link (letter
e, located in fuse and fusible
link box) and
M123circuit breaker. Turn ignition switch
ªONº and verify battery positive voltage is present at
terminals
V5andV13of power window main switch.
2. Check ground circuit of power window main switch.
3. Check power window main switch.
Driver side power window cannot be
operated but other windows can be
operated.1. Driver side power window regula-
tor circuit
2. Driver side power window regula-
tor
3. Power window main switch1. Check harness between power window main switch
and power window regulator for open or short circuit.
2. Check driver side power window regulator.
3. Check power window main switch.
Passenger power window cannot be
operated.1.
M92circuit breaker
2. Power supply of power window
relay
3. Power window relay ground cir-
cuit
4. Power window relay
5. Power window sub-switches
6. Passenger side power window
regulators
7. Power window main switch
8. Power window circuit1. CheckM92circuit breaker. Verify battery positive volt-
age is present at terminal
V3of power window relay.
2. Check harness between 7.5A fuse and power window
relay.
3. Check power window ground circuit.
4. Check power window relay.
5. Check power window sub-switch.
6. Check passenger side power window regulator.
7. Check power window main switch.
8-1. Check harness between power window relay and
power window sub-switch.
8-2. Check harnesses between power window main
switch and power window sub-switch for open/
short circuit.
8-3. Check harnesses between power window sub-
switch and power window regulator for open/
short circuit.
Passenger power window cannot be
operated using power window main
switch but can be operated by power
window sub-switch.1. Power window main switch 1. Check power window main switch.
Driver side power window auto func-
tion cannot be operated properly.1. Power window main switch
2. Encoder and limit switch1. Check power window main switch.
2. Check encoder and limit switch. (EL-1123)
Timer control for supplying power
after turning ignition switch to OFF
does not operate properly.1. Driver side door switch circuit.
2. Driver side door switch
3. Ignition switch ON signal circuit
4. Power window main switch1-1. Check harness between driver side door switch and
power window main switch.
1-2. Check ground circuit of driver side door switch.
2. Check driver side door switch.
3. Check ignition switch ON signal circuit to power win-
dow main switch.
4. Check power window main switch.
POWER WINDOW
EL-1122