Chevrolet CHEVY VAN G10 SERIES Service Manual page 312

E L E C T R IC A L -B O D Y A N D CHASSIS 12-12
DASH
SWITCH
CIRCUIT
BREAKER
S t a n d s
S P L IC E 'S !
(PARKING C IR C U IT)
BLACK WITH
PINK STRIPE
" ^ S E R I E S FIELD
MOTOR ^SHUNT FIELD
Fig. 1 6 -P A R K IN G Circuit
DIAG NO SIS CH ART
Wiper Performs Correctly in Step " B "
But O RIG INA L TR O UBLE Was
1 -W iper
2 -W ip e i w ould not shut o ff bu t had:
(a) Both LO & HI speeds
(b) LO speed on ly
(c) HI speed only
3-W ip er had "HI" speed on ly
4 -W ip e r had " LO" speed only
5 -In te r m itte n t O peration
12 VOLTS
BATTERY
IGNITION
SWITCH
PARK (closed
S W I T C H
during park-Vj.
ing cycle) f \ X
RESISTOR
20 OHMS
BLACK
LEGEND
POWER CIRCUIT TO SERIES FIELD
SERIES FIELD AND ARMATURE CIRCUIT
SHUNT FIELD CIRCUIT
POSSIBLE CAUSE
- n o voltage supply at wiper
(B low n fuse or op en in wire
that con n ects to N o . 2 wiper
term inal.)
-D e fe c tiv e Dash Sw itch
-W ire from Wiper Terminal
N o . 1 to dash sw itch open.
(a) Wire from wiper term inal N o . 1 to
dash sw itch grounded.
(b) Wire from wiper term inal N o. 3
to dash sw itch grounded.
(c) Wire from wiper terminal N o. 3
to dash sw itch op en .
S ee item 2(c) above
S ee item 2(b ) above
L oose dash sw itch m ounting.
D efective dash sw itch.
Poor wiring con n ection s.
;
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WIPER TERMINAL
_
BOARD
C H E V Y V A N SH O P M A N U A L