Infiniti M45 (Y34). Manual — part 757
AUTOMATIC DRIVE POSITIONER
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C
D
E
F
G
H
J
K
L
M
A
B
SE
2.
CHECK LCU
Replace the malfunctioning LCU with a known-good one, and carry out the communication diagnosis. Refer to
SE-46, "COMMUNICATION DIAGNOSIS"
.
OK or NG
OK
>> Replace LCU.
NG
>> Repair the harness between the indicated LCU and BCM.
COMMUNICATION SYSTEM C
1.
CHECK HARNESS CONNECTOR
Check terminals (at the control unit and harness) on BCM and LCU for disconnection, bend, poor connection,
and other malfunctions.
OK or NG
OK
>> GO TO 2.
NG
>> Repair the terminals and connectors.
2.
CHECK BCM
Replace the malfunctioning BCM with a known-good one, and carry out the communication diagnosis. Refer
to
SE-46, "COMMUNICATION DIAGNOSIS"
OK or NG
OK
>> Replace BCM.
NG
>> Repair the harness between the LCU and BCM control.
SWITCH MONITOR
Perform the diagnosis for the switch system input to each control unit.
Operation Procedure
Diagnosis Result Display
●
Detects the status change (switch ON/OFF operation) of the switch to be checked, and turns on/off the
indicator lamps (the map lamp and step lamp). Also sounds the buzzer (the key remainder and light
remainder) for 0.5 seconds.
PIIA2869E
SE-50
AUTOMATIC DRIVE POSITIONER
●
If a malfunction is detected, no indicator lamp and buzzer react.
Diagnosis Item
The status of the switch (except the ignition switch, interior lamp switch, and map lamp switch) input to each
control unit can be monitored.
Cancel of Switch Monitor
If one of the following conditions is satisfied, the switch monitor is cancelled.
●
When the ignition switch is turned OFF.
●
The vehicle speed becomes 7 km/h (4 MPH) or higher.
PIIA0185E
Control unit
Item
BCM
Detente switch
Steering wheel position switch (telescopic switch and tilt switch)
Seat memory switch (memory switch 1, memory switch 2, and setting switch)
Driver door switch
Door mirror remote control switch
Driver seat control unit
Slide switch (FR/RR)
Reclining switch (FR/RR)
Front end lifting switch (UP/DOWN)
Rear end lifting switch (UP/DOWN)
AUTOMATIC DRIVE POSITIONER
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ON BOARD DIAGNOSIS FOR AUTOMATIC DRIVE POSITIONER
Check the operations of the auto drive positioner system.
*1: If no malfunction is indicated, On board diagnosis for automatic drive positioner will end after the vehicle
speed sensor diagnosis is performed.
*2: Diagnosis ends after self-diagnostic results have been indicated for 10 minutes if left unattended.
PIIA4472E
SE-52
AUTOMATIC DRIVE POSITIONER
Diagnostic Result Display
●
The malfunctioning items are indicated by how many times LEDs on the seat memory switches 1 and 2
flash simultaneously.
●
If the vehicle speed is less than 7 km/h (4 MPH) for 15 seconds after the diagnosis for the seat and steer-
ing wheel systems were completed, the vehicle speed signal is judged malfunctioning.
●
If LH door mirror is malfunctioning, only indicator lamp on the memory switch 1 flashes, and if RH door
mirror is malfunctioning, only indicator lamp on the memory switch 2 flashes.
●
When all the diagnosis are finished normally, the indicator lamps on the memory switches 1 and 2 go off
after the vehicle speed signal diagnosis.
●
If there are multiple malfunctioning parts, the lamps indicate them in sequence from the smallest diagno-
sis trouble code.
●
The diagnosis results repeat until the diagnosis mode is cancelled.
PIIA0190E
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