Dtc P0113 - Mazda Mazda6 Workshop Manual Supplement

DTC P0113

DTC P0113 IAT sensor No.2 circuit high input
• PCM monitors input voltage from IAT sensor No.2 while engine is running. If input voltage from IAT sensor
DETECTION
CONDITION No.2 is above 5.0 V, PCM determines IAT sensor No.2 circuit high input.
• IAT sensor No.2 malfunction
• Connector or terminal malfunction
• Short to power circuit in wiring between IAT sensor No.2 terminal A and PCM terminal 8
POSSIBLE
• Open circuit in wiring between IAT sensor No.2 terminal A and PCM terminal 8
CAUSE
• Open circuit in wiring between IAT sensor No.2 terminal B and PCM terminal 91
• PCM malfunction
IAT SENSOR NO.2
4
IAT SENSOR NO.2
HARNESS SIDE CONNECTOR
Diagnostic procedure
STEP
1 PERFORM DTC CONFIRMATION PROCEDURE
• Perform "DTC Confirmation Procedure".
(See F2–85 DTC CONFIRMATION
PROCEDURE)
• Is same DTC present during KOEO or KOER
self-test?
2 INSPECT POOR CONNECTION OF IAT
SENSOR NO.2 CONNECTOR
• Turn engine switch to OFF.
• Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
• Is there any malfunction?
3 INSPECT IAT SENSOR NO.2 SIGNAL CIRCUIT
FOR SHORT TO POWER
• Turn engine switch to ON (Engine OFF).
• Inspect voltage between IAT sensor No.2
terminal A and body GND.
• Is voltage below 1.0 V?
4 INSPECT IAT SENSOR NO.2
• Inspect IAT sensor No.2.
(See F2–75 INTAKE AIR TEMPERATURE
(IAT) SENSOR NO.2
• Is there any malfunction?
ON-BOARD DIAGNOSTIC
3 6
A
B
B A
INSPECTION
INSPECTION)
5
8
6
5
91
PCM
HARNESS SIDE CONNECTOR
Yes Go to next step.
No Intermittent concern exists. Go to "Intermittent Concern
Troubleshooting".
(See F2–227 INTERMITTENT CONCERN
TROUBLESHOOTING)
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 short to power, go to Step 7.
Yes Replace IAT sensor No.2, go to Step 7.
(See F2–36 INTAKE-AIR SYSTEM REMOVAL/
INSTALLATION)
No Go to next step.
A6E407001082213
PCM
8
91
ACTION
F2–109
F2