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DI-239
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
DI8Z2-01

PRE-CHECK
1. SRS WARNING LIGHT CHECK
(a) Turn the ignition switch to the ON position and check that
the SRS warning light lights up.
(b) Check that the SRS warning light goes out after approx.
6 seconds.
HINT:
S When the ignition switch is at ON and the SRS warning
H12912
light remains on or flashes, the airbag sensor assembly
has detected a malfunction code.
S If, after approx. 6 seconds have elapsed, the SRS warn-
ing light sometimes lights up or the SRS warning light
lights up even when the ignition switch is OFF, a short in
the SRS warning light circuit can be considered likely.
Proceed to "SRS warning light circuit malfunction" on
page DI-393 .

2. DTC CHECK (Using diagnosis check wire)
DLC3
(a) Present troubles codes:
Output the DTC.
(1) Turn the ignition switch to the ON position and wait
for approx. 20 seconds.
(2) Using SST, connect terminals Tc and CG of the
DLC3.
CG TC SST 09843-18040
H10658 NOTICE:
Pay due attention to the terminal connecting position to
avoid a malfunction.
(b) Past troubles codes:
Output the DTC.
(1) Using service wire, connect terminals Tc and E1 of
the DLC3.
SST 09843-18040
(2) Turn the ignition switch to the ON position and wait
for approx. 20 seconds.
NOTICE:
Pay due attention to the terminal connecting position to
avoid a malfunction.

2002 ECHO (RM884U)

Author : Date : 409
DI-240
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM

Normal Code (c) Read the DTC.
0.25 Read the 2-digit DTC as indicated by the number of times
the SRS warning light blinks. As an example, the blinking
ON
patterns, normal, 11 and 31 are shown in the illustration.
S Normal code indication
OFF The light will blink 2 times per second.
S Malfunction code indication
0.25 The first blinking output indicates the first digit
of a 2-digit DTC. After a 1.5-second pause,
the second blinking output will indicate the
second digit.
Code 11 and 31
If there are 2 or more codes, there will be a 2.5-second pause
0.5 2.5 4.0
between each code. After all the codes have been output, there
ON will be a 4.0-second pause and they will all be repeated.
OFF HINT:
1.5 0.5 Repeat S In the event of a number of trouble codes, indication will
start from the smallest numbered code.
DTC 11 DTC 31 S If a DTC is not output or a DTC is output without terminal
AT0716
AB0056 H08231 connection, proceed to the Tc terminal circuit inspection
on page DI-398 .
TOYOTA Hand-Held Tester 3. DTC CHECK (Using TOYOTA hand-held tester)
(a) Hook up the TOYOTA hand-held tester to the DLC3.
(b) Read the DTCs by following the prompts on the tester
screen.
HINT:
Please refer to the TOYOTA hand-held tester operator's manu-
al for further details.
4. DTC CLEARANCE (Not using service wire)
DLC3 D08002 When the ignition switch is turned OFF, the diagnostic trouble
code is cleared.
HINT:
DTC might not be cleared by turning the ignition switch OFF.
In this case, proceed to the next step.
5. DTC CLEARANCE (Using service wire)
(a) Connect the 2 service wires to terminals Tc and A/B of
DLC3.
(b) Turn the ignition switch to ON and wait for approx. 6 se-
conds.

2002 ECHO (RM884U)

Author : Date : 410
DI-241
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM

(c) Starting with the Tc terminal, ground alternately terminal
Tc and terminal A/B twice each in cycles of 1.0 second.
Make sure that the terminals are grounded. Ensure the
terminal Tc remain grounded.
HINT:
When alternately grounding terminals Tc and A/B, release
ground from one terminal and immediately ground the other ter-
minal within an interval of 0.2 seconds.
If DTCs are not cleared, repeat the above procedure until the
codes are cleared.

Terminal
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