Download Supplemental Restraint System

DI–331
DIAGNOSTICS
–
SUPPLEMENTAL RESTRAINT SYSTEM
DI6Q0–03
Tc Terminal Circuit
CIRCUIT DESCRIPTION
By connecting terminals Tc and CG of the DLC3 the airbag sensor assembly is set in the DTC output mode.
The DTCs are displayed by blinking the SRS warning light.
WIRING DIAGRAM
Airbag Sensor
Assembly
D1
DLC3
W–B
4
CG
J/B No. 6
Tc
13
P–B
2
6E
2
6G
P–B
19
C5
Tc
IE
H14377
2000 MR2 (RM760U)
AuthorĂ:
DateĂ:
495
DI–332
DIAGNOSTICS
–
SUPPLEMENTAL RESTRAINT SYSTEM
INSPECTION PROCEDURE
If the DTC is not displayed, do the following troubleshooting:
1
Does SRS warning light light up for approx. 6 seconds?
LOCK
PREPARATION:
Check operation of the SRS warning light after the ignition
switch is turned from LOCK position to ON position.
ON
NO
AB0117
H12062
AB0119
H14086
Check SRS warning light system (See page
DI–326).
YES
2
Check voltage between terminals Tc and CG of DLC3.
PREPARATION:
Turn the ignition switch to ON.
CHECK:
Measure the voltage between terminals Tc and CG of the DLC3.
OK:
Voltage: 10 – 14 V
ON
CG
(–)
AB0119
H10688
(+)
Tc
H10654
OK
Go to step 4.
NG
2000 MR2 (RM760U)
AuthorĂ:
DateĂ:
496
DI–333
DIAGNOSTICS
3
–
SUPPLEMENTAL RESTRAINT SYSTEM
Check voltage between terminal Tc of DLC3 and body ground.
CHECK:
Measure the voltage between terminal Tc of the DLC3 and body
ground.
OK:
Voltage: 10 – 14 V
ON
Tc
(–)
(+)
OK
AB0119
H10689
H10656
Check harness between terminal CG of DLC3
and body ground.
NG
4
Check airbag sensor assembly.
LOCK
ON
Airbag Sensor Assembly
Tc
AB0117 AB0119
H01302
H14473
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.
(c) Disconnect the airbag sensor assembly connector.
(d) Insert a service wire into terminal Tc from the back side as
shown in the illustration.
(e) Connect the airbag sensor assembly connector with the
service wire.
(f)
Connect the negative (–) terminal cable to the battery.
(g) Turn the ignition switch ON, and wait at least for 20 seconds.
(h) Connect the service wire of terminal Tc to the body
ground.
CHECK:
Check operation of the SRS warning light.
OK:
SRS waning light comes on.
NOTICE:
Pay due attention to the terminal connecting position.
OK
Check harness between airbag sensor assembly and DLC3.
NG
Replace airbag sensor assembly.
2000 MR2 (RM760U)
AuthorĂ:
DateĂ:
497
DI–334
DIAGNOSTICS
–
SUPPLEMENTAL RESTRAINT SYSTEM
If the DTC is displayed without a DTC check procedure, perform the following
troubleshooting:
1
LOCK
Check resistance between terminal Tc of airbag sensor assembly and body
ground.
Airbag Sensor Assembly
Tc
AB0119
H01304
H01305
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.
(c) Disconnect the airbag sensor assembly connector.
CHECK:
Check the resistance between terminal Tc of the airbag sensor
assembly connector and body ground.
OK:
Resistance: 1 MΩ or Higher
NG
Repair or replace harness or connector.
OK
Replace airbag sensor assembly.
2000 MR2 (RM760U)
AuthorĂ:
DateĂ:
498