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TM9-2320-360-20-3
Section 4
TROUBLESHOOTING CHARTS
E. FLASH CODE: 42
J1587 CODE:
S21 1 - TOO FEW SRS (MISSING SRS)
STEP/SEQUENCE
RESULT
42-9
Check for Short
l Disconnect TRS connector.
l Read resistance between sockets
T1 and T2 on engine harness
connector.
42-10
Open TRS Line Check
l Install a jumper wire between
sockets A and B of TRS
connector.
l Read resistance between sockets
T1 and T2 of engine harness
connector.
42-11 TRS Test
l Read resistance of TRS
across sensor connector
pins A and B.
42-12 Check SRS Connectors
l Check connectors at SRS (both
harness side and SRS side)
for corrosion, damaged or
unseated pins or sockets, or bad
contacts.
Less than or
equal to 10,000 ohms.
Greater than
10,000 ohms or open.
Less than or
equal to 5 ohms.
Greater than
5 ohms or open.
Less than or
100 ohms.
From 100 to 200 ohms.
Greater than 200 ohms
Connectors
SRS requires replacement. Notify
are okay.
supervisor. Then go to 42-14.
Problem found.
Repair terminals/connectors
(para 7-77). Then go to 42-30.
WHAT TO DO NEXT
Signal line (ckt #110) is shorted
to return line (ckt #109). Repair
short. Then go to 42-30.
Go to 42-11.
Go to 42-11.
Signal line (ckt #110) or return
line (ckt #109) is open. Repair
open. Then go to 42-30.
Go to 42-13.
Go to 42-7.
Go to 42-13.
H-205
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