Mazda 626 Station Wagon, Workshop Manual

Page: 273 / 577

ON-BOARD DIAGNOSTIC
DTC P0500
DTC P0500 Vehicle speed sensor (VSS) malfunction
DETECTION
CONDITION
Vehicle speed signal not input after following conditions are met and 4.5 seconds or more have passed.
— D, S, or L range switch ON.
— P and N position switch OFF.
— Engine coolant temperature
60 * C {140 ’ F) or above.
— Turbine speed 1,500 rpm or above.
POSSIBLE
CAUSE
VSS malfunction
Open circuit between VSS terminal B and PCM terminal 58
Short to ground between VSS terminal B and PCM terminal 58
Open circuit between VSS terminal C and fuse block connector terminal K
Open circuit between VSS terminal A and body ground
Damaged connectors between VSS and PCM
PCM malfunction
B+
FUSE BLOCK
K
>
K l
n r f i
HARNESS S ID E C O N N E C TO R
(VIEW FROM H A R N E SS SIDE)
PCM HARN ESS S ID E C O N N E C TO R
HARNESS SIDE C O N N E C TO R
(VIEW FROM HARNESS SIDE)
r r
IT I I I ri rrj
m
J u i i
T Issi I I I I I I IO
t
I I I I I I
V i Y i ' i Y i V r r i i T i i i i
r i n i
r r r
(VIEW FRO M TER M IN A L SIDE)
K 2-66