Mazda Mazda6 - Pcm Inspection

CONTROL SYSTEM
F2–65
F2
End Of Sie
PCM INSPECTION
A6E404018881208
Using WDS or Equivalent
Caution
• The PCM terminal voltage vary with change in measuring conditions and vehicle conditions.
Always carry out a total inspection of the input systems, output systems, and PCM to determine
the cause of trouble. Otherwise, diagnosis will be incorrect.
Note
• For replace the PCM, setup the WDS and perform the following.
—“PCM configuration” (See F2–68 PCM CONFIGURATION.)
—“Correction after Parts Installation” (See F2–34 Correction after Parts Installation.)
1. Connect the WDS or equivalent to the DLC-2. (See F2–85 ON-BOARD DIAGNOSTIC TEST.)
2. Turn the engine switch to ON.
3. Measure the PID value.
• If PID value is not within the specification, follow the instructions in ACTION column.
PID Monitor Table
Monitor item (Definition)
Unit/
Condition
Condition/Specification
(Reference)
Action
PCM
terminal
ACCS
(A/C relay)
ON/OFF
• A/C operating: ON
• Engine switch is on: OFF
Inspect A/C relay.
(See T–19 RELAY
INSPECTION)
73
ACSW
(A/C switch)
ON/OFF
• A/C switch is on: ON
• A/C switch is off: OFF
Inspect A/C switch. 84
APS1
(Accelerator position sensor
No.1 signal voltage)
V
• Accelerator pedal depressed:
3.35—4.03 V
• Accelerator pedal released: 0.4—
0.7 V
Inspect accelerator position
sensor.
(See F2–72
ACCELERATOR POSITION
SENSOR INSPECTION)
10
APS2
(Accelerator position sensor
No.2 signal voltage)
V
• Accelerator pedal depressed:
3.35—4.03 V
• Accelerator pedal released: 0.4—
0.7 V
Inspect accelerator position
sensor.
(See F2–72
ACCELERATOR POSITION
SENSOR INSPECTION)
88
BARO
(BARO)
kPa inHg
• Elevation 0—400 m {0—1310 ft}:
100—103 kPa {29.5—30.4 inHg}
Replace PCM.
(See F2–64 PCM
REMOVAL/INSTALLATION)
–
BARO
(BARO signal voltage)
V
• Elevation 0—400 m {0—1310 ft}:
approx. 4.0 V
BOO
(Brake switch)
ON/OFF
• Brake pedal depressed: ON
• Brake pedal released: OFF
Inspect brake switch. 7
CPP
(Clutch switch)
ON/OFF
• Clutch pedal depressed: ON
• Clutch pedal released: OFF
Inspect clutch switch.
(See F2–68 CLUTCH
SWITCH INSPECTION)
33
CPP/PNP
(neutral switch)
Neutral/Drive
• Gear is neutral position: Neutral
• Gear is not neutral position: Drive
Inspect neutral switch.
(See F2–69 NEUTRAL
SWITCH INSPECTION)
56
CRUISESW
(Cruise control switch)
ON/OFF
• Cruise control switch is on: ON
• Cruise control switch is off: OFF
Inspect cruise control switch. 64
DTCCNT
(DTC count)
– • Number of output DTC
Follow DTC inspection.
(See F2–87 DTC TABLE)
–
ECT
(ECT)
°C °F
• ECT is 20°C {68°F}: 20°C
{68°F}
• ECT is 85°C {185°F}: 85°C
{185°F}
Inspect ECT sensor.
(See F2–76 ENGINE
COOLANT TEMPERATURE
(ECT) SENSOR
INSPECTION)
87
ECT
(ECT signal voltage)
V
• ECT is 20°C {68°F}: 3.0—3.2 V
• ECT is 85°C {185°F}: 0.7—0.9 V
FAN2
(Cooling fan relay No.2)
ON/OFF
• Engine coolant temperature is
above 100°C {212°F}: ON
• Others: OFF
Inspect cooling fan relay
No.2.
76
FAN3
(Cooling fan relay No.1)
ON/OFF
• Engine coolant temperature is
above 108°C {226°F}: ON
• A/C switch is on: ON
• Others: OFF
Inspect cooling fan relay
No.1.
102