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DIAGNOSTICS
MULTI--MODE MANUAL TRANSMISSION SYSTEM
COROLLA Supplement (RM1129E)
DTC
P0820/71 GEAR LEVER X--Y POSITION SENSOR
CIRCUIT
DTC
P0820/72 GEAR LEVER X--Y POSITION SENSOR
CIRCUIT
DTC
P0820/73 GEAR LEVER X--Y POSITION SENSOR
CIRCUIT
DTC
P0820/74 GEAR LEVER X--Y POSITION SENSOR
CIRCUIT
DTC
P0820/75 GEAR LEVER X--Y POSITION SENSOR
CIRCUIT
DTC
P0820/76 GEAR LEVER X--Y POSITION SENSOR
CIRCUIT
DTC
P0820/77 GEAR LEVER X--Y POSITION SENSOR
CIRCUIT
CIRCUIT DESCRIPTION
The transmission control ECU detects the switch position of the shift lever position sensor and operates each
actuator.
The shift lever position sensor has two functions; the switch for detecting and the switch for monitoring.
The transmission control ECU receives the signals from these switches.
S
The shift lever position sensor consists of a Link 1 circuit that detects the R, N, E, and M positions of
the shift lever, and a Link 2 circuit that detects the ”+” and ”--” positions. The circuits are connected to
the shift lever via the respective links. The contact switches (6--contact switches for Link 1, and 2--con-
tact switches for Link 2) of the circuits turn on and off in accordance with the fore--aft movement of the
shift lever. The transmission control ECU determines the present shift lever position in accordance with
the ON/OFF status of these contact switches.
S
The transmission shift main switch detects the side--to--side movement of the shift lever. It turns off
when the shift lever is in the R, N, or E position, and turns on in the M, +, or -- position.
S
The shift lever position sensor and the transmission shift main switch convert the shift lever position
into electric signals and output them to the transmission control ECU. The transmission control ECU
determines the present shift lever position from these signals and operates the actuators to change
the gear position.
05L4H--02
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E