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MODULE GROUND TERMINAL
2 WAY CONNECTOR
Figure 1 1-Test No. 3, Using Tool 1-24642
everything checks good to this point, the HEI
system is good .
If the coil is open, replace it
and proceed with steps 10 and 11 of Test 1 .
Test 3 - MODULE OUT OF DISTRIBUTOR
' ' Figure 11)
1 . Connect the two-way connector of the
tester to the HEI module and the green and
white tester leads to the corresponding
and "W" terminals of the module .
2 . Connect red lead of tester to battery
positive (+) terminal of 12-volt automotive
battery, and black lead of tester to battery
negative (-) terminal .
3. Connect ground clip of tester to HEI
module ground terminal . The module ground is
located at the mounting screw hold-down
nearest two-way connector terminals.
4. Press and hold the "TEST" button . A
momentary indication of the red "REPLACE"
light, then a steady indication of the green
"GOOD" light means that the module is .,good .
A steady indication on the red "REPLACE"
light means the module is defective and should
be replaced .
5. Perform steps 10 and 11 of TEST 1,
except connect the voltmeter in this check to
the 3-way connector, as shown in figure 11 .
"Grr
ENGINE ELECTRICAL 6Y-15
Figure 12-Ignition Coil Schematic
COMPONENT REPLACEMENT
IGNITION COIL REMOVAL
(Refer to Figure 4)
1 . Disconnect battery ground cable from
automotive battery.
2. Disconnect spark plug wire holder from
distributor cap, terminals; disconnect ignit-
ion/tachometer wiring harness connector from
ignition coil terminal connector.
NOTE:
Use care not to damage ignit-
ion/tachometer wiring
harness connector
latches.
3 . Remove three screws securing coil cover
to distributor cap.
4. Remove four screws securing ignition
coil to distributor cap, and remove two ground
wires.
Figure 13-Ohmmeter Check of Pick-Up Coil
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