Mazda 3 Workshop Manual page 439

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• Turn the ignition switch to off.
• Inspect EEC fuse for failure and proper.
• Is it normal?
INSPECT MONITOR CIRCUIT FOR
SHORT TO GROUND
• Disconnect battery cables.
4
• Inspect continuity between EEC fuse
terminal and body ground.
• Is there continuity?
INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Disconnect PCM connector.
5
• Inspect for poor connection (such as
damaged, pulled-out terminals, corrosion).
• Is there any malfunction?
INSPECT MONITOR CIRCUIT FOR OPEN
CIRCUIT
• Disconnect battery cables.
6
• Inspect continuity between EEC fuse
terminal and PCM terminal 1BA (wiring
harness-side).
• Is there continuity?
VERIFY TROUBLESHOOTING OF DTC
P2507 COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Turn the ignition switch to the ON position
7
(Engine off).
• Clear DTC from PCM memory using WDS
or equivalent.
• Start engine and warm it up completely.
• Is same DTC present?
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
8
(See AFTER REPAIR PROCEDURE
• Are any DTC present?
Downloaded from
No
Yes
No Go to step 7.
Yes Repair terminals, then go to Step 7.
No Go to the next step.
Yes Go to the next step.
No
Yes
No Go to the next step.
Yes
[LF].)
No Troubleshooting completed.
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• If EEC fuse has been melt down, then go to
the next step.
• If EEC fuse is not installed correctly, install it
correctly then go to Step 7.
Repair or replace wiring harness for short to
ground and install new fuse, then go to Step 7.
Repair or replace wiring harness for open
circuit, then go to the next step.
Replace PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION
Go to the applicable DTC inspection.
(See DTC TABLE [LF].)
- automotive repair manuals website
[LF].)