No
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DIAGNOSTIC FLOWCHART
TRANSMISSION SYSTEM
(4L80-E)
TM 9-2320-280-20-1
Change 1
2-429
No
No
No
No
No
No
No
No
No
No
J1 Resistance Measurements With Ignition OFF
CKT NOM.
CKT #
PIN
TO
PIN
EXP READ
Battery Neg
599A
a
Shunt
O ohms
Battery Neg
599B
b
Shunt
O ohms
TPS
355A
s
c or p
~ 1 to 2 Kohms
TPS
350A
d
c or p
4 to 6 Kohms
TISS
495A
m
n
1 to 2 Kohms
496A
TOSS
497A
S
R
1 to 2 Kohms
498A
TCC SOL
924A
X
j
~ 8 to 12 ohms
SHIFT SOL A
237A
E
j
~18 to 24 ohms
SHIFT SOL B
375A
D
j
~18 to 24 ohms
FORCE MTR
264A
g
k
3.5 to 5.2 ohms
265A
Trans Temp
923A
e
c or p
40 ohm to 5 Kohm
Sensor
(High Temp Low Resist.)
NOTE
Check connector pins before inserting probes.
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J1 CABLE DIAGNOSTICS CHART (Cont’d)
Upon completion of J1 cable diagnostics, operate the vehicle and recheck for codes to insure codes have
cleared. If codes have not cleared, refer to DS Maintenance.
