Dtc P0480 [Lf] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• Turn the ignition switch to the ON
position (Engine off).
• Measure the voltage between purge
solenoid valve terminal B and body
ground.
• Is the voltage B+?
INSPECT PCM CONNECTOR FOR
POOR CONNECTION
• Turn the ignition switch off.
• Disconnect the PCM connector.
8
• Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
• Is there malfunction?
INSPECT PURGE SOLENOID VALVE
CONTROL CIRCUIT
• Turn the ignition switch to the ON
position (Engine off).
9
• Measure the voltage between purge
solenoid valve terminal A (wiring
harness-side) and body ground.
• Is the voltage B+?
VERIFY TROUBLESHOOTING OF DTC
P0443 COMPLETED
• Make sure to reconnect all
disconnected connectors.
10
• Start the engine.
• Is the PENDING CODE for this DTC
present?
VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
11
(See AFTER REPAIR PROCEDURE
[LF].)
• Are any DTC present?
DTC P0480
Downloaded from
Yes Repair or replace the terminal, then go to Step 10.
No Go to the next step.
Yes
No
Yes
No Go to the next step.
Yes
No Troubleshooting completed.

DTC P0480 [LF]

Fan control circuit problem
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Repair or replace the wiring harness for short to
power supply, then go to the next step.
Inspect for continuity between purge solenoid
valve terminal A (wiring harness-side) and PCM
terminal 2AN (wiring harness-side).
• If there is continuity, go to the next step.
• If there is no continuity, repair or replace wiring
harness for open circuit, then go to the next step.
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION
Go to the applicable DTC troubleshooting.
(See DTC TABLE [LF].)
- automotive repair manuals website
[LF].)
B3E010201086W04