Nissan Primera P11. Instruction — part 360
FUNCTION
●
The TCU has the following control functions.
Item
Details of control
Direction indicators
Switches the director indicators (Left, Right or All) when the combination switch or
hazard switch is operated.
Trailer direction indicator buzzer
Sounds a buzzer during direction indicator operation when towing a trailer.
Light warning buzzer
Sounds warning buzzer when driver’s door is opened with light switch in the 1st or
2nd position and ignition switch “OFF”.
Ignition key warning buzzer
Sounds warning buzzer when driver’s door is opened with key in ignition and the
driver door lock knob is moved from the “unlock” position to the “lock” position.
Rear window defogger timer
Turn off rear window defogger and door mirror heater, if equipped, about 15 minutes
after the rear window defogger switch is turned “ON”.
Battery saver
Shuts off interior lamp in 30 minutes if any door is left open when ignition switch is
“OFF”. The battery saver will reset if ignition switch is cycled or any door is opened
or closed.
Interior lamp timer
Keep interior lamp illuminated for about 30 seconds when:
●
driver’s door is unlocked,
●
the ignition is switched off,
●
driver’s door is opened and then closed.
The timer is cancelled, and interior lamp turns off when:
●
driver’s door is locked, or
●
ignition switch is turned “ON”.
Theft warning
system
Normal operation
Monitors doors, hood, boot lid, door locks, volumetric sensors (if not excluded), igni-
tion and glass break sensors (wagon) when armed.
Flashes the direction indicators and sounds the horn for 30 seconds in case one of
the monitored sensors is triggered.
Diagnostic mode
Indicates the last three alarm triggers by flashing the direction indicators.
Central door lock
Centrally locks and unlocks the vehicle
Super lock
Activates and de-activates the super lock system.
TIME CONTROL UNIT (TCU)
System Description (Cont’d)
EL-307
REAR WINDOW DEFOGGER TIMER
The rear window defogger and door mirror defogger system are controlled by the TCU. With the ignition
switch in the ON or START position, power is supplied
●
to the rear window defogger relay
●
to TCU terminal
쑗
1
●
through 10A fuses [No.
5
, located in the fuse block (J/B)].
Ground is supplied to terminal
쑗
14
of the rear window defogger switch through body grounds
M6
,
M26
and
M28
.
When the rear window defogger switch is ON, ground is supplied
●
through terminal
쑗
16
of the rear window defogger switch
●
to TCU terminal
쑗
3
.
Terminal
쑗
13
of the TCU then supplies ground to the rear window defogger relay.
With power and ground supplied, the rear window defogger relay is energized to operate rear window
defogger and door mirror defogger for about 15 minutes.
For further information, refer to REAR WINDOW DEFOGGER DOOR and MIRROR DEFOGGER (EL-207).
IGNITION KEY WARNING BUZZER
Ground is supplied to TCU terminal
쑗
6
through front driver’s side door switch when switch is in OPEN
position from body ground.
With the key in the ignition switch in the ACC or OFF position, and locking the driver’s door from the inside,
the warning buzzer will sound.
LIGHT WARNING BUZZER
Power is supplied at all times
●
through 30A fusible link (letter
g
, located in the fuse and fusible link box) (LHD models)
●
through 15A fuse (No.
66
, located in the fuse and fusible link box) (RHD models)
●
to lighting switch terminal
쑗
11
.
Power is supplied at all times
●
through 7.5A fuse [No.
40
, located in the fuse block (J/B)]
●
to warning buzzer terminal
쑗
1
.
With the ignition switch in the ON or START position, power is supplied
●
through 7.5A fuse [No.
12
, located in the fuse block (J/B)]
●
to BCM terminal
쑗
29
.
Ground is supplied to TCU terminal
쑗
6
through front driver’s side door switch when switch is in OPEN
position from body ground.
With the ignition switch in the ACC or OFF position, the driver’s door OPEN, and the lighting switch in the
1st or 2nd position, the warning buzzer will sound.
INTERIOR LAMP TIMER
Power is supplied at all times
●
through 10A fuse [No.
5
, located in the fuse block (J/B)]
●
to interior lamp terminal
쑗
1
With the ignition switch in the ON or START position, power is supplied
●
through 10A fuse [No.
26
, located in the fuse block (J/B)]
●
to TCU terminal
쑗
1
.
When the driver’s door is unlocked, a door is opened and then closed, or the ignition is turned from “ON”
to “Acc” or “LOCK”, ground is supplied to the interior lamp terminal
쑗
2
for approximately 30 seconds.
The 30 seconds timer will be cancelled if the ignition switch is turned to “ON”, or the driver’s door is locked.
TIME CONTROL UNIT (TCU)
System Description (Cont’d)
EL-308
Trouble Diagnosis
The Timer Control Unit includes software to help during development testing, manufacturing and service.
It allows the technician to put it into Diagnostic Mode. In this mode, all switch inputs can be tested for con-
tinuity and if so equipped, alarm triggers identified.
When the time control unit is in Diagnostic Mode, the control unit tests the component and indicate the result
by the hazard lamp flashing.
On vehicles with a theft warning system, the TCU will first indicate the source of the last three alarm trig-
gers by flashing the hazard lamp. (Refer to “THEFT WARNING SYSTEM”, EL-311.)
왘
START
NOTE: Before entering diagnostic mode, make sure the vehicle is fully unlocked,
the ignition is switched off and the hazard switch is off.
Press the rear defogger switch exactly 6 times within 10 seconds.
왗
NG
The hazard lamp flash at 3Hz for 1 second to confirm step I.
OK
Within 10 seconds after confirmation of step I, turn the ignition ON, for at least 2 seconds.
왗
NG
The hazard lamp flash at 3Hz for 1 second to confirm step II.
OK
Within 10 seconds after confirmation of step II, turn the ignition off,
remove the ignition key and press the rear defogger switch for at least 5 seconds.
NG
The hazard lamp flash at 3Hz for 3 seconds to confirm diagnostic mode is entered.
왔
왔
왔
왔
왔
왔
TIME CONTROL UNIT (TCU)
EL-309
Checks
Once in Diagnostic Mode (and after identifying the last three alarm triggers in case a theft warning system
is equipped on the vehicle), the following inputs can be tested.
USER ACTION
TCU Reaction
COMPONENT TESTED
Driver’s door opened from closed
(all other doors closed)
Hazards flash once
Driver’s door open signal
Passenger or rear door opened from closed
(all other doors closed)
Hazards flash once
Door open signal for opened door
Driver’s door locked from unlocked
Hazards flash once
Driver’s door status signal
Passenger door locked from unlocked
Hazards flash once
Assist door status signal
Rear doors locked from unlocked (with ultra-
sonic model)
Hazards flash once
Rear doors status signal
Ultrasonics cancel switch is pressed (with ultra-
sonic model)
Hazards flash once
U/S cancel signal
Trunk or back door is opened from closed
Hazards flash once
Trunk open signal
Hood is opened from closed (with ultrasonic
model)
Hazards flash once
Hood open signal
Hazard switch is pressed from off
Hazards flash once
Hazard switch signal
Turn signal switch is moved to left from off
Hazards flash once
Left turn signal
Turn signal switch is moved to right from off
Hazards flash once
Right turn signal
Key turned to lock position in door
Hazards flash once *
Key cylinder lock switch signal
Lighting switch turned 1st position or 2nd posi-
tion from off
Hazards flash once
Tail lamp signal
Key put in ignition from out
Hazards flash once
Key in detect signal
Central unlock/Trunk release switch is pressed
Hazards flash once
Central unlock/Trunk release signal
External trunk release switch pressed from off
Hazards flash once
External trunk release switch signal
*) Hazards may flash a second time because of Driver’s door status signal change. The min. delay time between flash actions is
100ms.
In case the system does not operate as described above, check the concerned circuit for open or short.
After completion, the Diagnostic Mode can be switched off by pressing the rear defogger switch or by turn-
ing the ignition to “ON”. The hazard lamp will flash at 3Hz for 3 seconds to confirm that Diagnostic Mode
has been switched off.
TIME CONTROL UNIT (TCU)
Trouble Diagnosis (Cont’d)
EL-310
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