Toyota 2004 CELICA Electric Troubleshooting Manual page 171

ELECTRONICALLY CONTROLLED TRANSMISSION AND A/T INDICATOR
SYSTEM OUTLINE
GEAR SHIFT OPERATION
When driving, the engine warm up condition is input as a signal to TERMINAL THW of the engine control module from the
engine coolant temp. sensor and the vehicle speed signal from vehicle speed sensor is input to TERMINAL NT+ of the
engine control module. At the same time, the throttle valve opening signal from the throttle position sensor is input to
TERMINAL VTA of the engine control module as throttle angle signal.
Based on these signals, the engine control module selects the best shift position for the driving conditions and sends current
to the electronically controlled transmission solenoid.
SERVICE HINTS
V2 VEHICLE SPEED SENSOR (ELECTRONICALLY CONTROLLED TRANSMISSION)
1-2 : 560- 680 Ω
E2 (A), E3 (B), E4 (C) ENGINE CONTROL MODULE
BATT-E1 : Always approx. 12 volts
+B-E1 : Approx. 12 volts with ignition SW ON or ST position
MREL-E1 : Approx. 12 volts with ignition SW ON or ST position
P1 A/T INDICATOR LIGHT SW [PARK / NEUTRAL POSITION SW]
3-1 : Closed with shift lever in P position
3-2 : Closed with shift lever in R position
3-5 : Closed with shift lever in N position
3-7 : Closed with shift lever in D position
3-4 : Closed with shift lever in 2 position
3-8 : Closed with shift lever in L position
: PARTS LOCATION
Code
C12 A 36
C13 B 36
C18 36
D1 36
E1 32 (1ZZ-FE)
E2 A 32 (1ZZ-FE)
E3 B 32 (1ZZ-FE)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
Code See Page
IB 25
IF
II
25 25
IK
IM
IN 25
2C 23
2F
2G 23
2H
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
Code See Page
EA1 40 (1ZZ-FE)
IE3
44 44
IE5
II2 46
172
See Page Code
E4
E5
E6
J1
J2
J8
M1
Junction Block and Wire Harness (Connector Location)
Engine Room Main Wire and Instrument Panel J/B (Instrument Panel Brace RH)
Instrument Panel Wire and Instrument Panel J/B (Instrument Panel Brace RH) Instrument Panel Wire and Instrument Panel J/B (Instrument Panel Brace RH)
Floor Wire and Instrument Panel J/B (Instrument Panel Brace RH)
Engine Wire and Engine Room J/B (Engine Compartment Left)
Engine Room Main Wire and Engine Room J/B (Engine Compartment Left) g
Joining Wire Harness and Wire Harness (Connector Location)
Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B No.1)
Engine Room Main Wire and Instrument Panel Wire (Instrument Panel Brace LH) Engine Room Main Wire and Instrument Panel Wire (Instrument Panel Brace LH)
Engine Room Main Wire and Floor Wire (Instrument Panel Brace LH)
See Page
C 32 (1ZZ-FE)
D 32 (1ZZ-FE)
32 (1ZZ-FE)
33 (1ZZ-FE)
33 (1ZZ-FE)
37
33 (1ZZ-FE)
g ( g
2004 CELICA (EWD538U)
Code See Page
O3 37
P1 33 (1ZZ-FE)
S8 37
T1 33 (1ZZ-FE)
V2 33 (1ZZ-FE)
)