EN(H4SO)(diag)-61
ENGINE (DIAGNOSTICS)
Diagnostics for Engine Starting Failure
Step Check Yes No
1 CHECK BATTERY.
Check the battery voltage.
Is the voltage more than 12 V? Go to step 2. Charge or replace
the battery.
2 CHECK INPUT SIGNAL FOR STARTER MO-
TOR.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from starter motor.
3)Turn the ignition switch to ST.
4)Measure the power supply voltage between
starter motor connector terminal and engine
ground.
Connector & terminal
(B14) No. 1 (+) — Engine ground (
−
−−
−
):
N
TE:
•On AT models, place the select lever in the “P”
or “N” range.
•On MT models, depress the clutch pedal.
Is the voltage more than 10 V? Go to step 3. Go to step 4.
3 CHECK GROUND CIRCUIT OF STARTER
MOTOR.
1)Turn the ignition switch to OFF.
2)Disconnect the terminal from starter motor.
3)Measure the resistance of ground cable
between ground cable terminal and engine
ground.
Is the resistance less than 5
Ω?
Check the starter
motor. <Ref. to
SC(H4SO)-7,
Starter.>
Repair open circuit
of ground cable.
4 CHECK HARNESS BETWEEN BATTERY
AND IGNITION SWITCH CONNECTOR.
1)Disconnect the connector from ignition
switch.
2)Measure the power supply voltage between
ignition switch connector and chassis ground.
Connector & terminal
(B72) No. 1 (+) — Chassis ground (
−
−−
−
):
Is the voltage more than 10 V? Go to step 5. Repair open circuit
in harness
between ignition
switch and bat-
tery, and check
fuse SBF No. 4
and SBF No. 1.
5 CHECK IGNITION SWITCH.
1)Disconnect the connector from ignition
switch.
2)Measure the resistance between ignition
switch terminals while turning ignition switch to
the “ST” position.
Terminals
No. 1 — No. 3:
Is the resistance less than 5
Ω?
Go to step 6. Replace the igni-
tion switch.
6 CHECK TRANSMISSION TYPE. Is the target AT model? Go to step 7. A temporary poor
contact. Check
each connector for
poor contact.
7 CHECK INPUT VOLTAGE OF INHIBITOR
SWITCH.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from inhibitor
switch.
3)Connect the connector to ignition switch.
4)Measure the input voltage between inhibitor
switch connector terminal and engine ground
while turning ignition switch to ST.
Connector & terminal
(B12) No. 12 (+) — Engine ground (–):
Is the voltage more than 10 V? Go to step 8. Repair open or
ground short cir-
cuit in harness
between inhibitor
switch and ignition
switch.
N
TE:
Check security
system (if
equipped).
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