Pcm Inspection - Mazda 6 2002 Workshop Manual

PCM INSPECTION

Note
• PIDs for the following parts are not available on this model. Go to the appropriate part inspection page.
— CMP sensor (See
— Main relay (See
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 ecept 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)
Monitor item
(Definition) Condition
ACCS (A/C relay) ON/OFF
ACSW (A/C switch) ON/OFF
ALTF (Generator field
coil control duty value)
ALTT V (Generator
output voltage)
CONTROL SYSTEM
F–55 CAMSHAFT POSITION (CMP) SENSOR
T–24 RELAY INSPECTION.)
Unit/ Condition/Specification
(Reference)
Ignition switch ON: OFF
A/C switch ON and fan switch ON at
idle: ON
A/C switch and fan switch ON at
ignition switch ON: OFF
A/C switch OFF at ignition switch
ON: OFF
Ignition switch ON: 0%
Idle: 0—100%
%
Just after A/C switch ON and fan
switch ON at idle: Duty value rises
Ignition switch ON: 0 V
V
Idle: Appro. 14.9 V
operating)
INSPECTION.)
Inspect following PIDs: RPM, TP,
ECT, ACSW, TR.
Inspect A/C relay.
(See U–47 CLIMATE CONTROL
UNIT INSPECTION)
Inspect A/C switch.
(See U–47 CLIMATE CONTROL
UNIT INSPECTION)
Inspect following PIDs: IAT, ECT,
RPM, VPWR, ALTT V.
Inspect generator.
(See G–7 GENERATOR
INSPECTION)
Inspect generator.
*1
(See G–7 GENERATOR
(E/L not
INSPECTION)
A6E394018880W02
A6E3970W002
PCM
Action
terminal
4O
1AC
1AD
1AA
F–45
F