Ignition Switch: Testing and Inspection

Warning Light, Key Reminder Switch & Buzzer Test

NOTE: Refer to SCHEMATIC DIAGRAMS/ELECTRICAL AND ELECTRONIC DIAGRAMS when performing these tests.
1. Check warning light circuit as follows:
a. Disconnect warning light harness connector.
b. Connect a suitable voltmeter between warning light connector terminal 10 and ground.
c. Turn ignition switch On.
d. Voltage indicated should be approximately 12 volts.
e. If voltage indicated is as specified, circuit is satisfactory. Proceed to step g.
f. If voltage indicated is not as specified, repair circuit as necessary.
g. Connect warning light harness connector.
h. Disconnect control unit harness connector.
i. Connect a suitable voltmeter between control unit connector terminal 10 and ground.
j. Turn ignition switch On.
k. Voltage indicated should be approximately 12 volts.
l. If voltage indicated is as specified, circuit is satisfactory. Proceed to step 2.
m. If voltage indicated is not as specified, repair circuit or replace warning light bulb as necessary.
2. Check key reminder switch circuit as follows:
a. Disconnect key reminder switch harness connector.
b. Connect a suitable voltmeter between key reminder switch connector terminal 1 and ground.
c. Voltage indicated should be approximately 12 volts.
d. If voltage indicated is as specified, circuit is satisfactory. Proceed to step f.
e. If voltage indicated is not as specified, repair circuit as necessary.
f. Connect key reminder switch harness connector.
g. Disconnect control unit harness connector.
h. Remove key from ignition switch.
i. Connect a suitable voltmeter between control unit connector terminal 13 and ground.
j. Voltage indicated should be approximately 12 volts.
k. If voltage indicated is as specified, circuit is satisfactory. Proceed to step m.
l. If voltage indicated is not as specified, repair circuit as necessary.
m. Connect a suitable voltmeter between control unit connector terminal 12 and ground.
n. Voltage indicated should be 0 volts.
o. If voltage indicated is as specified, circuit is satisfactory. Proceed to step q.
p. If voltage indicated is not as specified, replace key reminder switch.
q. Insert ignition key.
r. Connect a suitable voltmeter between control unit connector terminal 13 and ground.
s. Voltage indicated should be 0 volts.
t. If voltage indicated is as specified, circuit is satisfactory. Proceed to step v.
u. If voltage indicated is not as specified, replace key reminder switch.
v. Connect a suitable voltmeter between control unit connector terminal 12 and ground.
w. Voltage indicated should be approximately 12 volts.
x. If voltage indicated is as specified, circuit is satisfactory. Proceed to step 3.
y. If voltage indicated is not as specified, repair harness as necessary.
3. Check buzzer circuit as follows:
a. Disconnect buzzer harness connector.
b. Connect a suitable voltmeter between buzzer connector terminal 1 and ground.
c. Voltage indicated should be approximately 12 volts.
d. If voltage indicated is as specified, circuit is satisfactory. Proceed to step f.
e. If voltage indicated is not as specified, repair harness as necessary.
f. Connect buzzer harness connector, then disconnect control unit harness connector.
g. Connect a suitable voltmeter between control unit connector terminal 20 and ground.
h. Voltage indicated should be approximately 12 volts.
i. If voltage indicated is as specified, circuit is satisfactory.
j. If voltage indicated is not as specified, repair harness as necessary.