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TM9-2320-360-20-3
Section 4
TROUBLESHOOTING CHARTS
E. FLASH CODE:
41
J1587 CODE:
S21 0 - TOO MANY SRS (MISSING TRS)
STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
41-13 Check SRS Connectors
l Check connectors at the SRS
(both the harness side and the
sensor side) for damage; bent,
corroded or unseated pins or
sockets, or bad contacts.
41-14
Verify SRS/TRS
l Turn ignition off.
l Reconnect all connectors.
l Turn ignition on.
l Clear codes (TM 9-2320-360-10).
l Start and run engine until the
“Check Engine” light comes on
or for 1 minute.
l Stop engine.
l Read inactive codes.
41-15 Check Cranking
Voltage
l Turn ignition off.
l Connect other connectors.
l Fabricate temporary jumper
harness per instructions in
Appendix D, Figure D-24.
l Connect jumper harness to fully
charged battery (12 volt).
l Connect jumper harness to ECM.
l Turn ignition on.
l Clear codes.
l Start engine (TM 9-2320-360-10).
Run until “Check Engine” light
comes on or for 1 minute.
l Stop engine.
l Read active codes.
Connectors
are okay.
SRS requires replacement. Notify
supervisor. Then go to 41 - 14.
Problem found.
Repair terminals/connectors
(para 7-77). Then go to 41-30.
Repairs are complete.
Code 21/0 reappears (and
any other codes).
If the SRS was just replaced, go
to 41-15. If the SRS was not
replaced, go to 41-6.
than Code 21/0 received.
Go to START-1, pg H-25, to
service other codes.
Engine won’t start
and/or Code 21/0 (and
any other codes).
Engine starts
and no Code 21/0.
Go to 41-7.
Service discharged battery
(TM 9-6140-200-14).
Repair, then to go 41-30.
H-197
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