STEP/SEQUENCE
RESULT
WHAT TO DO NEXT
TM 9-2320-363-20-1
Section 4
TROUBLESHOOTING CHARTS
E.
FLASH CODE:
41
J1587 CODE:
S21 0 · TOO MANY SRS (MISSING TRS)
41-9
Check for Short
Disconnect SRS connector.
Less than or
Signal line (ckt #111) is
shorted
Read resistance between sockets
equal to 10,000 ohms.
to return line (ckt #112). Repair
S1 and S2 on engine harness
short. Then go to 41-30.
connector.
Greater than
Go to 41-11.
10,000 ohms or open.
41-10
Open SRS Line Check
Install a jumper wire between
Less than or
Go to 41-11.
sockets A and B of SRS
equal to 5 ohms.
harness connectors.
Read resistance between sockets
Greater than,
Signal line (ckt #111) or return
S1 and S2 of engine harness
5 ohms or open.
line (ckt #112) is open. Repair
connector.
open Then go to 41-30.
41-11
SRS Test
Read resistance of the
Less than
Go to 41-13.
Synchronous Reference Sensor
100 ohms.
across the sensor connector
pins A and B.
From 100 to
Go to 41-7.
200 ohms.
Greater than
Go to 41-13.
200 ohms.
41-12
Check TRS
Connectors
Check connectors at the TRS (both
Connectors
Replace TRS. Then go to 41-14.
the harness side and the TRS
are okay.
side) for damage; bent, corroded
or unseated pins or sockets, or
Problem found.
Repair terminals/connectors.
bad contacts.
Then go to 41-30.
Change 3 3-345.317
