Mazda MX-6 1998, Workshop Manual

Page: 38 / 1282

TROUBLESHOOTING [ENGINE CONTROL FS]
DTC No. D iagnosed C irc u it
C o n d itio n MIL DC’ 1 OBD M o n ito r’ 2
P1124 Throttle position sensor
Input signal out of self-test
range
OFF — —
P1125 Throttle position sensor
Circuit intermittent OFF — —
P1127 Heated oxygen sensor heater
Exhaust system too cool OFF — —
P1130
Heated oxygen sensor (Front)
Lack of H 02S 11 switch
adaptive fuel at limit
ON 2 O
2
sensor
P1131
Heated oxygen sensor (Front)
Lack of H 02S 11 switch
sensor indicates lean
ON
2 O
2
sensor
P1132
Heated oxygen sensor (Front)
Lack of H 02S 11 switch
sensor indicates rich
ON 2
O
2
sensor
P1137
Heated oxygen sensor (Rear)
Lack of H 02S 12 switch
sensor indicates lean
OFF
— —
P1138 Heated oxygen sensor (Rear)
Lack of H 02S 12 switch
sensor indicates rich
OFF — —
P1250
Fuel pressure regulator control
solenoid valve
Circuit malfunction OFF — —
P1409 EGR valve (Stepper motor)
Malfunction ON
2 CCM
P1410 EGR boost sensor/solenoid Stuck
OFF
— —
P1450
Evaporative emission control
system
Unable to bleed up fuel tank
vacuum
ON
2 Purge
P1451
Evaporative emission control
system
Canister Drain Cut Valve
(CDCV) circuit malfunction
(Open/short) ON 2 CCM
P1460
Wide open throttle air
conditioning cutoff
Circuit malfunction
OFF
— —
P1464 Air conditioner (A/C) Out of self-test range
OFF
— —
P1474 Fan control system
Cooling fan control primary
circuit malfunction
OFF
—
—
P1479 Fan control system
Condenser fan control primary
circuit malfunction
OFF — —
P1487 EGR boost solenoid valve
Circuit malfunction OFF — —
P1501 Vehicle speed sensor
Input signal out of self-test
range
OFF
—
—
P1504 Idle air control (IAC) system Circuit malfunction ON
2 CCM
P1506 Idle air control (IAC) system
Overspeed error ON 2 CCM
P1507 Idle air control (IAC) system Underspeed error ON 2
CCM
P1602 Immobilizer system
Immobilizer unit - PCM
communication error
OFF — —
P1603 Immobilizer system
Cordword unregistered in
PCM
OFF — —
P1604 Immobilizer system
Key ID number unregistered in
PCM
OFF — —
P1621 Immobilizer system
Code word does not match
after engine cranking
OFF — —
P1622 Immobilizer system
Key ID number does not
match
OFF
— —
P1623
Immobilizer system
Code word or key ID number
read/write error in PCM
OFF
— —
P1624 Immobilizer system
Immobilizer system
communication counter = 0
OFF — —
P1650
Power steering pressure
sensor
Out of self-test range OFF — —
P1652
Power steering pressure
switch
Faild on ON 2 CCM
P1701
TCC sensor Sensor intermittent
tr 0 5 -0 1 A AUTOMATIC TRANSAXLE
ON-BOARD DIAGNOSIS [LA4A-EL]
0 1 -0 1 A -1 0