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Vehicle Speed Sensor (VSSI
Troubleshooting
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REO TEST HARNESS
PBOTECTIVE
TAPE
Test tho 8LK wiro:
1. Disconnect the 3P connector
from the vohicle speed sensor
(vss).
2 . C o n n e c t t h e t e s t h a r n e s s
(07LA,J - PT3020A) only to the
engine wire harnoss.
3, Connect the RED test harness
clip to the positive probe of an
ohmmel€r.
4. Check for continuity betwoen
the RED test harness clip and
body ground.
R o p l i r o p . n i n t h . B L K w i r o
b.tw..n tha VSS .nd G101.
To3t thc BLK/YEL wiro:
1. Conn6ct th€ WHT test harness
clip to the positive prob€ of a
voltmeter, and connect the RED
t€st harness clip to the nogative
probe.
2. Turn the ignition switch ON (lll.
R.p.lr op.n In tho BLK/YEL wire
brtw..n th. VSS and th. under-
dr.h tu../r.l!y box.
Tort th. BLU/WHT wiro:
Connect the GRN test harness
c l i p t o t h e p o s i t i v e p r o b € o t a
voltmeter, and connect the RED
test harness clip to the nggatjve
probe.
Roprh op.n in th. 8LU/WHT wire
b.tw.on tho VSS lnd PCM.
ls there about 5 V or more?
Before testing, inspect the No. 15 (7,5 A) fuse in the under-dash fuse/relay box.
GRN TEST
CLIP
TEST HARNESS
OTLAJ - PT3O2OA
w'{T TES? HARIVESS CLIP
TAPE
23-128
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Table of Contents
Troubleshooting
