Mazda 6 2002 - Page 190

ON-BOARD DIAGNOSTIC
F93
F
Diagnostic procedure
STEP INSPECTION ACTION
1 PERFORM DTC CONFIRMATION PROCEDURE
• Perform DTC CONFIRMATION PROCEDURE.
(See F66 DTC CONFIRMATION
PROCEDURE.)
• Is same DTC present?
Yes Go to next step.
No Intermittent concern exists. Go to INTERMITTENT
CONCERN TROUBLESHOOTING procedure.
(See F227 INTERMITTENT CONCERN
TROUBLESHOOTING.)
2 INSPECT POOR CONNECTION OF IAT
SENSOR CONNECTOR
• Turn ignition key to OFF.
• Disconnect MAF/IAT sensor connector.
• Inspect for poor connection (damaged, pulled-
out pins, corrosion, etc.).
• Are there any malfunctions?
Yes Repair or replace terminal, then go to Step 8.
No Go to next step.
3 CLASSIFY IAT SENSOR MALFUNCTION OR
HARNESS MALFUNCTION
• Connect WDS or equivalent to DLC-2.
• Access IAT PID.
• Connect a jumper wire between MAF/IAT
sensor terminals D and E.
• Verify IAT value
• Is voltage below 4.9 V?
Yes Replace MAF/IAT sensor, then go to Step 8.
No Go to next step.
4 INSPECT IAT SENSOR SIGNAL CIRCUIT FOR
SHORT TO POWER
• Turn ignition key to ON (Engine OFF).
• Measure voltage between MAF/IAT sensor
terminal D (harness-side) and body ground.
• Is voltage B+?
Yes Repair or replace harness for short to power, then go to
Step 8.
No Go to next step.
DTC P0113 IAT circuit high input