1996 TOYOTA TERCEL ignition

AB0117 AB0118 AB0119
R12658H00032
LOCK
ACC
ON
or
Airbag Sensor Assembly
Tc
DI-188
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1996 TERCEL (RM440U)
4 Check airbag sensor assembly.
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
and wait at least 90 seconds.
(c) Remove steering wheel pad (See page SR-13).
(d) Disconnect connector of front passenger airbag assem-
bly (See page RS-21).
(e) Disconnect connector of airbag sensor assembly
(See page RS-33)
(f) Insert service wire into terminal Tc from back side as
shown.
(g) Connect airbag sensor assembly connector with service
wire.
(h) Connect negative (-) terminal cable to battery.
(i) Turn ignition switch to ACC or ON and wait at least 20 se-
conds.
(j) Connect service wire of terminal Tc to body ground.
CHECK:
Check operation of SRS warning light.
OK:
SRS waning light comes on.
NOTICE:
Never make a mistake with the terminal connection posi-
tion as this will cause a malfunction.
OK Check harness between airbag sensor assem-
bly and DLC1.
NG
Replace airbag sensor assembly.

AB0117
R14303
H00033
Airbag Sensor Assembly
Tc
LOCK
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-189
1996 TERCEL (RM440U)
If the DTC is displayed without a DTC check procedure, do the following trou-
bleshooting.
1 Check resistance between terminal Tc of airbag sensor assembly and body
ground.
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
and wait at least 90 seconds.
(c) Disconnect airbag sensor assembly connector.
CHECK:
Check resistance between terminal Tc of airbag sensor assem-
bly connector and body ground.
OK:
Resistance: 1MW or higher
NG Repair or replace harness or connector.
OK
Replace airbag sensor assembly.

DI4MO-01
I05900
Door Lock Control Relay or
Theft Deterrent ECUIgnition Switch

Key Unlock Warning Switch
J/B No.7

POWER Fuse
Door Lock Control Switch
Door Key Lock and Unlock Switches
Engine Room R/B

DOME Fuse
Door Lock Assembly

Door Lock Motor

Door Unlock Detection SwitchDoor Courtesy Switches
Door Lock Assembly

Door Lock Motor

Door Unlock Detection Switch
Door Lock Assembly

Door Lock Motor

Door Unlock
Detection Switch
Door Courtesy Switches DI-192
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
1996 TERCEL (RM440U)
PARTS LOCATION

DI4MP-02
I00302 I00303I00304Theft Deterrent and Door Lock Control ECU AB T3
T4
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
DI-193
1996 TERCEL (RM440U)
TERMINALS OF ECM
w/ Theft Deterrent System
TerminalsSymbolsConditionSTD Value
A2 e A3ACT- - ACT+Ignition switch ºOFFº.Below 50 W
A4 e GroundE - GroundAlways.Below 1 W
A4 e A8E - ACCIgnition switch ºACCº.10 - 14 V
A9 e Ground+ B2 - GroundAlways.10 - 14 V
B1 e Ground+ B1 - GroundAlways.10 - 14 V
B2A4LSWR E
Door unlock detection switch ºONº.
(Rear door)Below 1 W
B2 e A4LSWR - EDoor unlock detection switch ºOFFº.
(Rear door)1 MW or higher
B3A4CTY E
Door courtesy switch ºONº.
(Except driver's door opened)Below 1 W
B3 e A4CTY - EDoor courtesy switch ºOFFº.
(Except driver's door closed)1 MW or higher
B4A4DSWL ELuggage compartment door courtesy switch ºONº.Below 1 WB4 e A4DSWL - ELuggage compartment door courtesy switch ºOFFº.1 MW or higher
B5A4L1 EDoor lock control switch ºLOCKº .Below 1 WB5 e A4L1 - EDoor lock control switch ºOFFº or ºUNLOCKº .1 MW or higher
B6A4UL3 E
Driver's door key lock and unlock switch
ºUNLOCKº.Below 1 W
B6 e A4UL3 - EDriver's door key lock and unlock switch
ºOFFº or ºLOCKº.1 MW or higher
B7A4DSWD E
Door courtesy switch ºONº.
(Driver's door opened)Below 1 W
B7 e A4DSWD - EDoor courtesy switch ºOFFº.
(Driver's door closed)1 MW or higher
B8A4UL1 EDoor lock control switch ºUNLOCKº .Below 1 WB8 e A4UL1 - EDoor lock control switch ºOFFº or ºLOCKº.1 MW or higher
B9A4LUG E
Luggage compartment door key lock
and unlock switch ºONº.Below 1 W
B9 e A4LUG - ELuggage compartment door key lock
and unlock switch ºOFFº.1 MW or higher
B10 e A4HEAD - ELight control switch other than ºHEADº.10 - 14 V
B11 e A4SH - EAlways.10 - 14 V
B12 e B1IND - +B1Indicator light ºONº.Below 1 W

DI-194
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
1996 TERCEL (RM440U)Terminals
SymbolsConditionSTD Value
B14A4DSWH EEngine hood courtesy switch ºONº.Below 1 WB14 e A4DSWH - EEngine hood courtesy switch ºOFFº.1 MW or higher
B15A4LSWD EDoor unlock detection switch ºONº . (Driver's)Below 1 WB15 e A4LSWD - EDoor unlock detection switch ºOFFº. (Driver's)1 MW or higher
B16A4UL2 E
Door key lock and unlock switch ºUNLOCKº.
(Passenger's)Below 1 W
B16 e A4UL2 - EDoor key lock and unlock switch ºOFFº or ºLOCKº.
(Passenger's)1 MW or higher
B19A4DSWP EDoor courtesy switch ºONº. (Passenger's)Below 1 WB19 e A4DSWP - EDoor courtesy switch ºOFFº. (Passenger's)1 MW or higher
B20 e A4KSW - E
Key unlock warning switch ºONº.
(Key is inserted into key cylinder)Below 1 WB20 e A4KSW E
Key unlock warning switch ºOFFº.1 MW or higher
B21A4LSWP EDoor unlock detection switch ºONº . (Passenger's)Below 1 WB21 e A4LSWP - EDoor unlock detection switch ºOFFº. (Passenger's)1 MW or higher
B22A4L2 E
Door key lock and unlock switch ºLOCKº.
(Driver's)Below 1 W
B22 e A4L2 - EDoor key lock and unlock switch ºOFFº or ºUNLOCKº.
(Driver's)1 MW or higher
B23 e A4TAIL - ELight control switch ºOFFº.10 - 14 V
B24 e A4HORN - EHorn switch ºOFFº.10 - 14 V
B25 e A4SRLY - EIgnition switch is turned to ºSTº.
(when park / neutral position switch ºPº position)10 - 14 V

I05883Door Lock Control Relay
T6
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
DI-195
1996 TERCEL (RM440U)
w/o Theft Deterrent System
TerminalsSymbolsConditionSTD Value
3 e 4ACT(-) - ACT(+)Ignition switch ºOFFº.Below 50 W
8 e GroundB - GroundAlways.10 - 14 V
916UL3 E
Door key lock and unlock switch ºUNLOCKº.
(Driver's)Below 1 W
9 e 16UL3 - EDoor key lock and unlock switch ºOFFº or ºLOCKº.
(Driver's)1 MW or higher
1016L1 E
Door lock control switch ºLOCKº and
door key lock and unlock switch ºLOCKº .Below 1 W
10 e 16L1 - EDoor lock control switch ºOFFº or ºUNLOCKº and door key
lock and unlock switch ºOFFº or ºUNLOCKº.1 MW or higher
1116UL1 EDoor lock control switch ºUNLOCKº .Below 1 W11 e 16UL1 - EDoor lock control switch ºOFFº or ºLOCKº.1 MW or higher
16 e GroundE - GroundAlways.Below 1 W

I05887
(-) (+)ON
3
2
RH LH
43
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
DI-207
1996 TERCEL (RM440U)
INSPECTION PROCEDURE
1 Check voltage between terminals 2(3), 1(1) of door lock control switch connector
and body ground.
PREPARATION:
Remove the door trim and service hold cover.
CHECK:
(a) Turn ignition switch ON.
(b) Measure voltage between terminals 3(2), 4(3) of door lock
control switch connector and body ground, when door
lock control switch is pressed to the lock side, unlock side
and not pressed.
OK:
S it h itiTerminalSwitch position3(2)4(3)
Lock sideBelow 1 V8 - 10 V
Unlock side8 - 10 VBelow 1 V
OFF8 - 10 V8 - 10 V
HINT:
The terminal number without brackets is for the LH, the number
with brackets is for the RH.
OK Proceed to next circuit inspection shown on
matrix chart (See page DI-196).
NG

I10187
IEW-B
1 Key Unlock Warning Switch
2
LGT420
KSW Theft Deterrent ECU
N14675SR4824
I09773
2
1
- DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
DI-21 1
1996 TERCEL (RM440U)
Key Unlock Warning Switch Circuit
CIRCUIT DESCRIPTION
The key unlock warning switch goes on when the ignition key is inserted in the key cylinder and goes off when
the ignition key is removed.
The ECU operates the key confinement prevention function while the key unlock warning switch is on.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check key unlock warning switch.
PREPARATION:
Disconnect key unlock warning switch connector.
CHECK:
Check continuity between terminals 1 and 2 of key unlock warn-
ing switch connector, when the key is inserted to the key cylin-
der or removed.
OK:
Switch positionTester connectionSpecified condition
ON (Key inserted)1 - 2Continuity
OFF (Key removed)-No continuity
NG Replace key unlock warning switch.
OK
DI4MW-02