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DI-377
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
DI58G-01

PRE-CHECK
1. SRS WARNING LIGHT CHECK
(a) Turn the ignition switch to the ACC or 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 ACC or ON and the SRS
W01632
warning 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-459 , DI-461 .

2. DTC CHECK (Using diagnosis check wire)
DLC1 (a) Present trouble codes:
Output the DTC.
(1) Turn the ignition switch to the ACC or ON position
and wait for approx. 20 seconds.
(2) Using SST, connect terminals Tc and E1 of the
DLC1.
E1 Tc SST 09843-18020
R13006 NOTICE:
Pay due attention to the terminal connecting position to
avoid a malfunction.
(b) Past trouble codes:
Output the DTC.
(1) Using SST, connect Terminals Tc and E1 of the
DLC1.
SST 09843-18020
(2) Turn the ignition switch to the ACC or ON position
and wait for approx. 20 seconds.
NOTICE:
Pay due attention to the terminal connecting position to
avoid a malfunction.

2002 4RUNNER (RM887U)

Author : Date : 553
DI-378
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM

(c) Read the DTC.
Normal Code
Read the 2-digit DTC as indicated by the number of times
0.25
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,
Code 11 and 31
the second blinking output will indicate the
second digit.
0.5 2.5 4.0 If there are 2 or more codes, there will be a 2.5-second pause
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:
S In the event of a number of trouble codes, indication will
1.5 0.5 Repeat
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-465 .

DLC1 3. DTC CHECK (Using TOYOTA hand-held tester)
(a) Hook up the TOYOTA hand-held tester to the DLC1 or
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)
TOYOTA Hand-Held Tester When the ignition switch is turned OFF, the diagnostic trouble
code is cleared.
5. DTC CLEARANCE (Using service wire)
(a) Connect the 2 service wires to terminals Tc and AB of
DLC1.
(b) Turn the ignition switch to ACC or ON and wait for approx.
6 seconds.

DLC3

H07370

2002 4RUNNER (RM887U)

Author : Date : 554
DI-379
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM

(c) Starting with the Tc terminal, ground alternately terminal
Tc and terminal AB twice each in cycles of 1.0 second.
Make sure that the terminals are grounded. Ensure the
terminal Tc remains grounded.
HINT:
When alternately grounding terminals Tc and AB, 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
OFF 1 second
1 second
Tc (

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