Engine Control Troubleshooting - 2.3L/3.0L/4.0L - Mazda B-Series 1997 Workshop Manual

ENGINE CONTROL TROUBLESHOOTING
INDEX
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FT- 2
OUTLINE
. . . . . . . . . . . . . . . . . . . . . . . . . .
FT- 10
SPECIFICATIONS
. . . . . . . . . . . . . . . . .
FT- 10
WIRING DIAGRAM (4.OL)
. . . . . . . . . . FT- 11
WIRING DIAGRAM (3.OL)
. . . . . . . . . .
FT- 16
WIRING DIAGRAM (2.3L)
. . . . . . . . . .
FT- 21
EEC-V COMPONENT
DESCRIPTIONS
. . . . . . . . . . . . . . . .
FT- 26
TROUBLESHOOTING GUIDE . . . . . . . . FT- 31
. . . . . . . . . . . .
USING THIS SECTION FT- 31
DIAGNOSTIC INDEX . . . . . . . . . . . . . . FT- 33
SYMPTOM TROUBLESHOOTING
. .
FT- 35
ON-BOARD DIAGNOSIS SYSTEM
. . . .
FT- 70
PREPARATION
. . . . . . . . . . . . . . . . . . .
FT- 70
. . . . . . .
QUICK TEST DESCRIPTION FT- 70
DIAGNOSTIC TROUBLE CODE
(DTC) NUMBER
. . . . . . . . . . . . . . . .
FT- 71
INTAKE AIR SYSTEM
(FOR 2.3L. 3.OL. 4.OL)
. . . . . . . . . . . . . . .
FT-146
THROTTLE BODY
. . . . . . . . . . . . . . . .
FT-146
THROTTLE RETURN SCREW
. . . . . .
FT-146
-
.
IDLE SPEED CONTROL SYSTEM
(FOR 2.3L. 3.OL. 4.OL)
. . . . . . . . . . . . . . .
FT-147
DESCRIPTION
. . . . . . . . . . . . . . . . . . .
FT-147
IDLE AIR CONTROL SOLENOID
. . . .
FT-147
FUEL SYSTEM
(FOR 2.3L. 3.OL. 4.OL) . . . . . . . . . . . . . . . FT-148
DESCRIPTION . . . . . . . . . . . . . . . . . . . FT-148
PREPARATION . . . . . . . . . . . . . . . . . . . FT-149
PRECAUTION
. . . . . . . . . . . . . . . . . . . .
FT-149
SYSTEM OPERATION
. . . . . . . . . . . . .
FT-150
FUEL PUMP
. . . . . . . . . . . . .
INERTIA FUEL SHUTOFF
SWITCH
. . . . . . . . . . . . . . . . . . . . . . .
FT-152
FUEL PUMP RELAY
. . . . . . . . . . . . . . .
FT-153
. . . . . . . . .
PRESSURE REGULATOR FT-154
INJECTOR
. . . . . . . . . . . . . . . . . . . . . . .
FT-155
EXHAUST SYSTEM
(FOR 2.3L. 3.OL. 4.OL)
. . . . . . . . . . . . . . .
FT-156
COMPONENTS
. . . . . . . . . . . . . . . . . . .
FT-156
POSITIVE CRANKCASE VENTILATION
(PCV) SYSTEM
(FOR 2.3L. 3.OL. 4.OL)
. . . . . . . . . . . . . . .
FT-157
DESCRIPTION
. . . . . . . . . . . . . . . . . . .
FT-157
. . . . . .
PCV VALVE (FOR 2.3L
1
4.OL) FT-157
PCV VALVE (FOR 3.OL)
. . . . . . . . . . . .
FT-157
EXHAUST GAS RECIRCULATION (EGR)
FUNCTION CONTROL SYSTEM
(FOR 2.3L. 3.OL. 4.OL)
. . . . . . . . . . . . . . .
FT-158
DESCRIPTION
. . . . . . . .
FT-158
EGR VACUUM
REGULATOR
SOLENOID
. . . . . . . . . . . . . . . . . . . . .
FT-158
EGR VALVE
. . . . . . . . . . . . . . . . . . . . . .
FT-159
FUEL EVAPORATIVE EMISSION SYSTEM
(FOR 2.3L. 3.OL. 4.OL)
. . . . . . . . . . . . . . .
FT-160
.
DESCRIPTION
....................
FT-1 60
OPERATION
. . . . . . . . . . . . . . . . . . . . .
FT-161
SYSTEM OPERATION
. . . . . . . . . . . . .
FT-161
EVAPORATIVE EMISSION (EVAP)
CANISTER PURGE SOLENOID
. . .
PURGE FLOW SENSOR (PFS)
. . . . .
EVAPORATIVE EMISSION
. . . . . . . . . . . . . . . . . . . . .
CANISTER
FUEL VAPOR VALVE
. . . . . . . . . . . . . .
DECHOKE CONTROL SYSTEM
(2.3L ONLY)
. . . . . . . . . . . . . . . . . . . . . . . .
DESCRIPTION
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .
SYSTEM OPERATION
A/C CUTOFF SYSTEM
(FOR 2.3L. 3.OL. 4.OL)
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
DESCRIPTION
CONTROL SYSTEM
(FOR 2.3L. 3.OL. 4.OL)
. . . . . . . . . . . . . . .
PREPARATION
. . . . . . . . . . . . . . . . . . .
POWERTRAIN CONTROL
MODULE (PCM)
. . . . . . . . . . . . . . . .
PCM POWER RELAY
(BATTERY POWER)
. . . . . . . . . . . . .
EEC PWR FUSE
(PCM MEMORY POWER:)
. . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
GROUND
MASS AIR FLOW SENSOR
. . . . . . . .
VEHICLE SPEED SENSOR (VSS)
.
.
THROTTLE POSITION SENSOR
:
. . .
ENGINE COOLANT
TEMPERATURE SENSOR
. . . . . . .
INTAKE AIR TEMPERATURE
SENSOR
. . . . . . . . . . . . . . . . . . . . . . .
OCTANE ADJUST SHORTIN
BAR
. . . . . . . . . . . . . . . . . . . . . . . . . . .
HEATED OXYGEN SENSORS
. . . . . .
DIFFERENTIAL PRESSURE:
FEEDBACK EGR SENSOR
. . . . . .
CLUTCH PEDAL POSITIOhI (CPP)
SWITCH (M/T ONLY)
. . . . . . . . . . . .
TRANSMISSION RANGE (TR)
SENSOR
(AIT
ONLY)
. . . . . . . . . . . .
TRANSMISSION FLUID
TEMPERATURE (TFT) SEINSOR
. . . . . . . . . . . . . . . . . . . . .
(Am ONLY)
TURBINE SHAFT SPEED (XSS)
SENSOR (A/T ONLY)
. . . . . . . . . . . .
POWER STEERING PRESSURE
SWITCH (2.3 ONLY)
CRANKSHAFT
POSITION' S ENSOR.'
:
CAMSHAFT POSITION SENSOR
. . . .