Mazda 3 - Pcm Inspection [Z6]; Not Using the WDS or Equivalent; PCM Terminal Voltage Table (Reference)

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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902
Note
• The PCM is integrated with the air cleaner cover and cannot be removed.
1. When replacing the PCM, perform the following:
• PCM configuration (See PCM CONFIGURATION [Z6].)
2. Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [Z6].)
3. Disconnect the negative battery cable.
4. Remove the air cleaner cover. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [Z6].)
5. When replacing the PCM on the vehicles, perform the following:
• PCM parameter reset (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY
ADDITION AND CLEARING.)
6. Install in the reverse order of removal.
PCM INSPECTION [Z6]
B3E014018880W08
Not Using the WDS or Equivalent
Note
• The PCM terminal voltage can vary with conditions when measuring and changes due to age
deterioration on the vehicle, causing false diagnosis. Therefore a comprehensive inspection of
the input and output systems, and the PCM is necessary to determine where the malfunction
occurs.
PCM terminal voltage table (Reference)
Terminal voltage table (Reference)
Terminal
Signal name
Connected to
Measurement condition
Voltage
(V)
Inspection
item(s)
1A
-
-
-
-
-
1B
-
-
-
-
-