1992 MAZDA PROTEGE trouble shooting no spark

G
ENGINE ELECTRICAL SYSTEM
INDEX ......................................................
OUTLINE ..................................................
SPECIFICATIONS .................................... G- 3
TROUBLESHOOTING
GUIDE.. .................... G-
4
DIAGNOSTIC INDEX ................................
SYMPTOM TROUBLESHOOTING..
............. :- t
-
CHARGING SYSTEM ................................. G- 6
PREPARATION .......................................
CIRCUIT DIAGRAM ................................. :I ;
TROUBLESHOOTING .............................. G- 7
BATTERY ............................................... G- 6
ALTERNATOR ........................................ G-10
DRIVE BELT ........................................... G-14
IGNITION SYSTEM .................................... G-15
PREPARATION ....................................... G-15
CIRCUIT DIAGRAM ................................. G-15
TROUBLESHOOTING .............................. G-16
IGNITION TIMING ................................... G-17
HIGH-TENSION LEAD .............................. G-17
SPARK PLUGS ....................................... G-16
IGNITION COIL ....................................... G-19
DISTRIBUTOR ........................................ G-20
IGNITER ................................................ G-23
STARTING SYSTEM .................................. G-24
PREPARATION ....................................... G-24
CIRCUIT DIAGRAM ................................. G-24
STARTER ...............................................
G-25
STARTER INTERLOCK SWITCH (MTX)
........ G-31
03UOGX-001

TROUBLESHOOTING GUIDE G
3 Cranks slowly
STEP INSPECTION ACTION
1 Check if engine cranks normally with fully Yes Check charging system CT page G-7
charged battery
No Go to next step
2 Check starter cable connection for looseness Yes Repair or replace connection
and corrosion
OBUOGX-OC
I 1 4
.
Alternator warning lamp illuminates when engine running
STEP INSPECTION ACTION
1 Check for correct battery voltage at idle Yes Check wire harness between alternator L terminal and aI*
Specification: 14.1--14.7V ternator warning lamp
No Check charging system w page G-7
03UOGX-008
5 I Discharged battery I 1TEP INSPECTION
f Check charging system w page G-7 -
6
TEF
1
r
--
Yes
03UOGX-009
ACTION
Turn ignition switch ON and check dark current as shown
Dark current: Below 20mA
No Repair or replace parts as necessary 1
Misfire
INSPECTION
-
Disconnect high-tension lead from each spark
plug and check for strong blue spark while
cranking
, i
Yes
No T-
I
ACTION
- Check spark plug w page G-f8
~3 If OK, engine electrical system normal
~3 If not OK, clean or replace spark plug
Check ignition system ci’ page G-16
1 03UOGX-010
G-5

G IGNITION SYSTEM
TROUBLESHOOTING
iTEP
INSPECTION
ACTION
1
Check if MIL illuminates when engine is running Yes Check for malfunction code number
and perform troubleshooting (TEN ter-
minal grounded) c7 Section F
No Go to next step
2 Drsconnect high-tension lead from distributor and
Yes
check for strong blue spark while cranking en-
l Check distributor cap and rotor v page G-22
gine * Check high-tension lead
KP page G-19 c7 page G-17
+ Ignition system normal
No
Go to next step
3 Check if resistance of ignition coil is OK
Yes
Go to next step ~7
page G-19
Specification (at 20°C [66”9):
Primary coil winding: 0.81-0.99Q No
Replace ignition coil
Secondary coil winding: IO-16 kQ
-i
Check if resistance of high-tension leads is OK Yes Go to next step
D= page G-17
Specification: 16 kQ per 1 m (3.28 ft)
No Replace high-tension lead
5 Check if igniter is OK
m- page G-23 Yes
Replace ECU
No
Replace igniter
03UOGX-03
G-16