Ignition And Starting Switch; Timing Marks On V-8 Engine - Pontiac Grand Prix Service Manual

6E-20
1 -
PONTIAC SE
IRVICE MANUAL
Adjust ignition timing as follows:
1. Adjust breaker point gap.
2. Connect power timing light.
3. Loosen distributor clamp screw and rotate distribu-
tor until power timing light shows that the proper
mark on the cover lines up with the mark on the
harmonic balancer. Tighten distributor clamp screw.
The timing specifications for various engines are listed
below:
6 cyl 4 bbl..
. . . . . . . . . . . . .
.5" BTDC
6 cyl 1 bbl..
. . . . . . . . . . . . .
.OO TDC
V-8,
. . . . . . . . . . . . . . . . . . . .
.9O BTDC
Ram
Air I V . .
. . . . . . . . . . .
.15O BTDC
IGNITION AND STAR'TING SWITCH
The ignition and starting switch is completely new for
1969. The switch is located in the steering column on
the right hand side just below the steering wheel. The
electrical switching portion of the assembly is separate
from the key and lock cylinder. However, both are
synchronized and work in conjunction with each other
through the action of the actuator rod assembly. For a
complete explanation of the key and lock cylinder, and
the actuator rod assembly, see STEERING, Section 9.
The ignition and starting switch is key operated
through the actuator rod assembly to close the ignition
primary circuit and to energize the starting motor
solenoid for cranking.
The ignition switch used on all cars has five positions,
one more than switches used in previous model years.
Fig. 6E-34
Timing Marks on V-8 Engine
There are currently two OFF positions; one being the
familiar OFF position found on previous model
switches, and a new position known as the
OFF-LOCKED position. OFF is the center position of
the key-lock cylinder, and OFF-LOCKED is the next
position to the left. ACCESSORY is located one more
detent to the left of OFF-LOCKED. Turning the key
to the right of the OFF position until spring pressure is
felt will put the ignition switch in the RUN position,
and when turned fully to the right against spring
pressure, the switch will be in the START position.
With the switch in the ACCESSORY (A) position, the
following electrical circuits are activated: stop lights,
directional signals, parking brake warning light, radio,
power antenna, power windows and seats, back-up
lights, and electric windsheild wipers. In the RUN
position, the ignition primary circuit is activated
through the resistance and the air conditioning and
heater and defroster circuits are activated.
There are seven terminals on the back of the switch
(Fig. 6E-35). The Bat terminals (Bl, B2 and B3), which
are connected so as to form one common termhal, are
connected to the battery and supply power to the
switch. The ACCESSORY terminal (A) supplies power
to all of the accessories except air cdhditioning, heater
and defroster when the switch is in the ACCESSORY
position. The SOLENOID terminal (S) supplies power
to the solenoid to activate the starter in the start
position. The GROUND terminal (G) completes the
test circuit for the temperature HOT indicator bulb
when the switch is turned to the start position.
The A terminal is activated only when the ignition
switch is in the ACCESSORY position, and the S and
G terminals are activated only in the START position.
All circuits are cut off in either the OFF or
OFF-LOCKED positions.
When the ignition switch is turned to the START
position, the ignition primary circuit is activated
directly, by-passing the resistance, and the starting
motor circuit is activated to crank the engine. Three
IGNITION terminals, marked 11, I2 and 13, will be
found on the back of the switch. The I1 and
I3
terminals are energized when the ignition switch is in
the normal operating position (RUN position). The I1
directs current to the ignition coil through the
resistance. I3 energizes the air conditioning, heater and
defroster circuits. The I2 terminal is energized when
the ignition switch is turned to the start position and
directs current to the coil around the resistance to
provide full battery voltage to the coil when starting.
When the ignition switch is in the RUN position,
current can be traced from the battery through the
battery terminals (Bl, B2 and B3), through the voltage
regulator to the field terminal of the genrator, and
finally through the rotor field coil windings to ground.