Diagnosis System
SEAT: AUTO ACCESS SEAT SYSTEM: DIAGNOSIS SYSTEM
1. SERVICE OPERATION MODE
HINT
* Buzzer pattern Auto Access Seat System.
* Auto access seat position information is stored in EEPROM (Electronically Erasable Programmable Read Only Memory). Position information is initialized in service operation mode.
* Service operation mode allows diagnostic codes stored in the RAM of the position control ECU assembly to be output/cleared, and enables initialization of the auto access seat position information stored in EEPROM.
(a) Service operation mode flowchart.
HINT
* After entering service operation mode, regardless of the switch positions, service operation mode will run until completed.
* If only 1 code is entered, or if the code cannot be determined, diagnostic codes stored in RAM will be output.
* If unstable power source voltage is detected, the system will not enter service operation mode.
(b) Operation to enter service operation mode.
(1) Press and hold the ingress switch or egress switch of switch (A).
(2) With switch (A) depressed, press and hold the front slide switch or rear slide switch of switch (B) or (C) for 10 seconds to enter service operation mode, and confirm that buzzer (A) sounds.
(c) Conditions for ending service operation mode.
(1) If any of the conditions below are met, service operation mode will end.
(d) Conditions for cancelling service operation mode.
(1) If the condition below is met, service operation mode will be cancelled.
(e) Diagnostic code output.
(1) Press and hold the ingress switch or egress switch of switch (A).
(2) With switch (A) depressed, press and hold the front slide switch or rear slide switch of switch (B) or (C) for 10 seconds to enter service operation mode, and confirm that buzzer (A) sounds.
(3) After buzzer (A) sounds, turn all operated switches to off.
(4) 10 seconds after all operated switches are turned off, the diagnostic codes are output by sounding the buzzer (M).
HINT
* If there is no diagnostic code (trouble code), the normal code (10 pulses) is output once.
* All diagnostic codes (trouble codes) are output as a set, which is repeated 3 times.
* Diagnostic codes are output in order starting with the lowest number, with a 2.0 second pause (buzzer off) between codes.
* If diagnostic codes are stored, there is a 4.0 second pause (buzzer off) between sets.
(5) After the diagnostic codes have been output the specified number of times, the service operation mode complete buzzer (B) sounds, and the system returns to the mode it was in before entering service operation mode.
(f) Clearing diagnostic codes.
(1) Press and hold the ingress switch or egress switch of switch (A).
(2) With switch (A) depressed, press and hold the front slide switch or rear slide switch of switch (B) or (C) for 10 seconds to enter service operation mode, and confirm that buzzer (A) sounds.
(3) After buzzer (A) sounds, turn all operated switches off.
(4) After turning all operated switches off, perform either Operation A or B below within 10 seconds.
(5) After the diagnostic codes have been cleared, the service operation mode complete buzzer (B) sounds, and the system returns to the mode it was in before entering service operation mode.
(g) Initializing auto access seat position information.
(1) Press and hold the ingress switch or egress switch of switch (A).
(2) With switch (A) depressed, press and hold the front slide switch or rear slide switch of switch (B) or (C) for 10 seconds to enter service operation mode, and confirm that buzzer (A) sounds.
(3) After buzzer (A) sounds, turn all operated switches off.
(4) After turning all operated switches off, perform either Operation A or B below within 10 seconds.
(5) When position information has been initialized, buzzer (B) sounds.
(6) After buzzer (B) sounds, the system enters independent operation mode.
2. INDEPENDENT OPERATION MODE
HINT
* Buzzer pattern Auto Access Seat System.
* If the auto access seat position information stored in the EEPROM has been lost, independent operation mode enables calibration of all origin point information for the auto access seat and enables this information to be stored in the EEPROM.
* If any of the conditions below are met, the system will enter independent operation mode.
NOTICE:
If the position information for even one motor is missing, it is necessary to record position information for all motors.
(a) Conditions for ending independent operation mode.
(1) If the following condition is met, independent operation mode will end.
(b) Conditions for cancelling independent operation mode.
(1) If any of the conditions below are met, independent operation mode will be cancelled.
(c) Changes to operation switch function
(1) During independent operation mode, the functions of the following operation switches is changed or restricted. For switch operations other than those listed below, the buzzer (E) will sound and the system will not operate.
HINT
* *1: Only when swivel motor origin point position calibration is incomplete, egress operation to move back to the position from the start of independent operation mode is possible.
* *2: Operation is only possible when front-rear slide motor origin point position calibration is incomplete.
* *3: When either the upper end limit switch or the outward slide origin point limit switch is OFF, the following operations are performed in order of priority.
* *4: When front-rear slide motor origin point position calibration is not complete, perform operation from Mode 4.
(d) Conditions for sounding buzzer.
(1) If any of the following conditions are met, the buzzer sounds.
3. OPERATING PROCEDURES FOR INDEPENDENT OPERATION MODE
HINT
* Buzzer pattern Auto Access Seat System.
* After any origin point position calibration, operation of all motors other than the reclining motor and up-down motor is stopped until independent operation mode ends.
* After calibration of any origin point for the auto access seat, if there is a motor for which calibration is incomplete, the stop on that motor is released and calibration of the incomplete origin point can be performed again by operating the switch.
(a) Upper end and outward slide origin point calibration.
(1) Press and hold the ingress switch of the No. 2 power seat switch assembly (ingress and egress switch).
(2) Auto access seat moves in the following order: Up-down motor operates upward -> upper end limit switch ON detected, buzzer (J) sounds -> up-down motor operates downward -> up-down motor stops -> outward slide motor operates in the egress direction -> outward slide motor origin point limit switch ON detected -> outward slide motor stops -> up-down motor operates upward -> upper end limit switch ON detected, buzzer (J) sounds -> up-down motor stops.
(b) Swivel origin point calibration.
NOTICE:
Performing swivel origin point calibration from an egress state can cause the seat cushion to bump against the vehicle body, so slide the seat approximately 50 mm (2.0 in) rearward before performing calibration.
(1) Press and hold the front slide switch of the power seat switch assembly (front-rear slide switch) or No. 2 power seat switch assembly (front-rear slide switch).
(2) Auto access seat moves in the following order: Swivel motor moves in the ingress direction -> swivel origin point limit switch ON detected, buzzer (J) sounds -> swivel motor stops.
(c) Front-rear slide origin point calibration.
(1) Press and hold the rear slide switch of the power seat switch assembly (rear slide switch) or No. 2 power seat switch assembly (rear slide switch).
(2) Auto access seat moves in the following order: Rear slide operation -> front-rear slide limit switch ON detected, buzzer (J) sounds -> front-rear slide motor stops.
(d) Reclining origin point calibration.
HINT
Until the reclining origin point calibration is completed, only reclining down operations can be performed when the reclining limit switch is ON, and only reclining up operations can be performed when the reclining limit switch is OFF.
(1) Press and hold the down switch of the power seat switch assembly (reclining switch) or No. 2 power seat switch assembly (reclining switch).
(2) Auto access seat moves in the following order: Reclining down operation -> reclining limit switch OFF detected -> reclining motor stops.
(3) Press and hold the up switch of the power seat switch assembly (reclining switch) or No. 2 power seat switch assembly (reclining switch).
(4) Auto access seat moves in the following order: Reclining up operation -> reclining limit switch ON detected, buzzer (J) sounds -> reclining motor stops.
(e) Conditions for ending independent operation mode.
(1) When calibration of all origin points for the auto access seat is completed, the buzzer (I) sounds and independent operation mode ends.
4. SYMPTOM-BASED MODE CHART
(a) The following chart shows what modes are applicable to specific malfunction symptoms.
