Dtc P0506 [Lf] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• Is the magnetic clutch still on?
INSPECT GENERATOR CONTROL
CIRCUIT MALFUNCTION
5
• Apply electrical load.
• Is engine speed increased?
INSPECT AIR CLEANER ELEMENT
• Remove air cleaner element with the
6
engine running.
• Is the engine speed increased?
INSPECT THROTTLE BODY
PASSAGE
7
• Is throttle body clogged?
INSPECT ENGINE COMPRESSION
• Inspect engine compression.
8
(See COMPRESSION INSPECTION
[LF].)
• Is engine compression normal?
VERIFY TROUBLESHOOTING OF
DTC P0505 COMPLETED
• Make sure to reconnect all
disconnected connectors.
9
• Clear the DTC using the WDS or
equivalent.
• Perform the KOER Self-Test.
• Is the same DTC present?
VERIFY AFTER REPAIR
PROCEDURE
• Perform the "After Repair Procedure".
10
(See AFTER REPAIR PROCEDURE
[LF].)
• Are any DTC present?
DTC P0506
Downloaded from
Yes Go to the next step.
No
Yes
No Go to the next step.
Yes
No Go to the next step.
Yes Go to the next step.
No Overhaul the engine, then go to the next step.
Yes
No Go to the next step.
Yes
No Troubleshooting completed.

DTC P0506 [LF]

Idle control system RPM lower than expected
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Repair short to power supply in generator control
circuit, then go to Step 9.
Clean or replace the air cleaner element, then go
to Step 9.
Clean or replace the throttle body passage, then
go to Step 9.
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].)
B3E010201087W03