Mazda MX-6 1998, Workshop Manual

Page: 216 / 1282

TROUBLESHOOTING [ENGINE CONTROL KL]
DTC No. Diagnosed Circuit
Condition MIL DC*1 OBD Monitor*2
P1144 Heated oxygen sensor (Rear)
Lack of heated oxygen sensor
(Rear).
Sensor indicates rich
OFF
—
Other
P1150
Heated oxygen sensor (Front
LH)
Lack of heated oxygen sensor
(Front LH).
Adaptive fuel at limit
ON 2
0 2 sensor
P1151
Heated oxygen sensor (Front
LH)
Lack of heated oxygen sensor
(Front LH).
Sensor indicates lean
ON 2 O
2
sensor
P1152
Heated oxygen sensor (Front
LH)
Lack of heated oxygen sensor
(Front LH).
Sensor indicates rich
ON 2
O
2
sensor
P1250
Fuel pressure regulator control
solenoid valve
Circuit malfunction OFF
—
Other
P1409 EGR valve (Stepper motor) Coil malfunction ON
2 CCM
P1410
EGR boost sensor/EGR boost
solenoid valve
Sensor/solenoid frozen
OFF — Other
P1450
Evaporative emission control
system
Unable to bleed up fuel tank
vacuum
ON 2
Purge
P1451
Evaporative emission control
system
CDCV circuit malfunction
(Open/short)
ON
2 CCM
P1460
Wide open throttle air
conditioning cutoff
Circuit malfunction OFF
— Other
P1464 Air conditioner (A/C) Demand out of self-test range OFF — Other
P1474
Fan control system
Cooling fan control primary
circuit malfunction
OFF — Other
P1479 Fan control system
Condenser fan control primary
circuit malfunction
OFF — Other
P1487 EGR boost solenoid valve Circuit malfunction OFF — Other
P1501 Vehicle speed sensor
Input signal out of self-test
range
OFF — Other
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
— Other
P1603
Immobilizer system
Code word unregistered in
PCM
OFF
— Other
P1604 Immobilizer system
Key ID number unregistered in
PCM
OFF — Other
P1621 Immobilizer system
Code word does not match
after engine cranking
OFF
—
Other
P1622 Immobilizer system
Key ID number does not
match
OFF
— Other
P1623 Immobilizer system
Code word or key ID number
write/read error in PCM
OFF
—
Other
P1624 Immobilizer system
Immobilizer system
communication counter=0
OFF
—
Other
P1650
Power steering pressure
switch
Out of self-test range OFF
—
Other
P1652
Power steering pressure
switch
IAC monitor disable by PSP
switch failed on
ON 2 CCM
P1703 Brake switch Out of self-test range
tr
0 5 -0 1 B AUTOMATIC TRANSAXLE ON
BOARD DIAGNOSIS [GF4A-EL]
P1705 Transaxle range switch Out of self-test range
tr 0 5 -0 1 B AUTOMATIC TRANSAXLE ON
BOARD DIAGNOSIS [GF4A-EL]
0 1 -0 1 B -1 0