Mazda 6 2002 - Pcm Inspection

CONTROL SYSTEM
F45
F
PCM INSPECTION
A6E394018880W02
Note
• PIDs for the following parts are not available on this model. Go to the appropriate part inspection page.
 CMP sensor (See F55 CAMSHAFT POSITION (CMP) SENSOR INSPECTION.)
 Main relay (See T24 RELAY INSPECTION.)
1. Connect the SST (WDS or equivalent) to the
DLC-2.
2. Turn the ignition switch to ON position.
3. Measure the PID value.
• If PID value is not within the specification,
follow the instructions in Action column.
Note
• The PID/DATA MONITOR function monitors
the calculated value of the input/output
signals in the PCM. Therefore, an output
device malfunction is not directly indicated
as a malfunction of the monitored value for
the output device. If a monitored value of an
output device is out of specification, inspect the monitored value of the input device related to the output
control.
• For input/output signals except those of the monitoring items, use a voltmeter to measure the PCM
terminal voltage.
• The simulation items that are used in the ENGINE CONTROL SYSTEM OPERATION INSPECTION are
as follows.
 ACCS
ALTF
 EVAPCP
FAN1
FAN2
FAN3
FP
HTR11
HTR12
IAC
IASV
IMRC
IMTV
 VT DUTY1
PID/DATA monitor table (reference)
A6E3970W002
Monitor item
(Definition)
Unit/
Condition
Condition/Specification
(Reference)
Action
PCM
terminal
ACCS (A/C relay) ON/OFF
Ignition switch ON: OFF
A/C switch ON and fan switch ON at
idle: ON
Inspect following PIDs: RPM, TP,
ECT, ACSW, TR.
Inspect A/C relay.
(See U47 CLIMATE CONTROL
UNIT INSPECTION)
4O
ACSW (A/C switch) ON/OFF
A/C switch and fan switch ON at
ignition switch ON: OFF
A/C switch OFF at ignition switch
ON: OFF
Inspect A/C switch.
(See U47 CLIMATE CONTROL
UNIT INSPECTION)
1AC
ALTF (Generator field
coil control duty value)
%
Ignition switch ON: 0%
Idle: 0100%
Just after A/C switch ON and fan
switch ON at idle: Duty value rises
Inspect following PIDs: IAT, ECT,
RPM, VPWR, ALTT V.
Inspect generator.
(See G7 GENERATOR
INSPECTION)
1AD
ALTT V (Generator
output voltage)
V
Ignition switch ON: 0 V
Idle: Approx. 14.9 V
*1
(E/L not
operating)
Inspect generator.
(See G7 GENERATOR
INSPECTION)
1AA