Mazda Mazda6 Workshop Manual Supplement page 266

STEP
4 INSPECT ECT SENSOR SIGNAL CIRCUIT FOR
SHORT TO POWER
• Turn engine switch to ON (Engine OFF).
• Inspect voltage between ECT sensor terminal
A and body GND.
• Is voltage below 1.0 V?
5 INSPECT POOR CONNECTION OF PCM
CONNECTOR
• Turn engine switch to OFF.
• Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
• Is there any malfunction?
6 INSPECT ECT SENSOR CIRCUIT FOR OPEN
• Turn engine switch to OFF.
• Inspect continuity between following
harnesses:
— ECT sensor terminal A and PCM terminal
87.
— ECT sensor terminal B and PCM terminal
91.
• Is there continuity?
7 VERIFY TROUBLESHOOTING OF DTC P0118
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from PCM memory using WDS or
equivalent.
• Perform KOEO/KOER self-test.
(See F2–86 KOEO/KOER SELF-TEST
PROCEDURE)
• Is same DTC present?
8 VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
(See F2–86 AFTER REPAIR
• Is there any DTC present?
End Of Sie
F2–114
ON-BOARD DIAGNOSTIC
INSPECTION
PROCEDURE)
Yes Go to next step.
No Repair or replace harness for short to power, go to Step 7.
Yes Repair or replace suspected terminal, go to Step 7.
No Go to next step.
Yes Go to next step.
No Repair or replace harness for open, go to next step.
Yes Replace PCM, go to next step.
(See F2–64 PCM REMOVAL/INSTALLATION)
No Go to next step.
Yes Go to applicable DTC inspection.
(See F2–87 DTC TABLE)
No Troubleshooting completed.
ACTION