Operating instructions

GENERAL MOTORS HIGH ENERGY IGNITION-- DISABLING PROCEDURES
Page 41
When performing Charging System teals on General Motors vehicles equipped with
High Energy Ignition (HEt), the engine can be prevented from starling as follows:
........ i II .,r r, ,, , .,,i,rbl Ir I, , ,, J,im.,.I,,,, ,,,, ,,,,,,,,,
SYSTEMS WITH COIL IN DISTRIBUTOR CAP
Disconnect primary wire from the BAT
terminal on the distributor cap,
CAUTION: The tachometer terminal must
NEVER be connected to ground at the
distributor cap, as damage to the
distributor module can result.
_r _'_--_ ' _,_"€_,. PRIMARY
SYSTEMS WITH SEPARATE COIL
Remove high,tension coll wire from colt
secondary terminal, Connect Jumper Wire
between coil secondary terminal and a
good ground on the engine.
....................................................... LI]_ IL IILILI[_II LJLI l .......... _I I IILIIIIIILIi .........................................................
HEI WITH ELECTRICAL
DIAGNOSTIC CONNECTOR
Insert the GM Diagnostic Connector
Terminal in terminal No, 6 of Electrical
Diagnostic Connector, Connect jumper wire
between this terminal and a good ground,
CAUTION: The tachometer terminal must
NEVER be conneoted to ground at the
distributor cap, as damage to the
distributor module can result.
JUMPER'
WIRE
L
DIAGNOSTIC
CONNECTOR
ELECTRICAL
DIAGNOSTIC
CONNECTOR
TERMINAL
G
ENGINE
GROUND