Mazda 6 2002, Workshop Manual

Page: 219 / 1248

F–90
ON-BOARD DIAGNOSTIC
End Of Sie
DTC P0111
A6E397001084W13
Diagnostic procedure
6 VERIFY MAP SENSOR SIGNAL CIRCUIT FOR
SHORT TO CONSTANT VOLTAGE CIRCUIT
•
Inspect for continuity between MAP sensor
terminal D and C (harness-side).
•
Is there any continuity?
Yes Repair or replace suspected harness, then go to Step 8.
No Go to next step.
7 VERIFY MAP SENSOR SIGNAL CIRCUIT FOR
OPEN CIRCUIT
•
Inspect continuity between MAP sensor
terminal D (harness-side) and PCM terminal 1J
(harness-side).
•
Is there any continuity?
Yes Go to next step.
No Repair or replace suspected harness, then go to next step.
8 VERIFY TROUBLESHOOTING OF DTC P0108
COMPLETED
•
Make sure to reconnect all disconnected
connectors.
•
Turn ignition key to ON (Engine OFF).
•
Clear DTC from memory using WDS or
equivalent.
•
Perform KOEO/KOER self-test.
(See
F–66 KOEO/KOER SELF-TEST .)
•
Is same DTC present?
Yes Replace PCM, then go to next step.
(See F–43 PCM REMOVAL/INSTALLATION .)
No Go to next step.
9 VERIFY AFTER REPAIR PROCEDURE
•
Perform “After Repair Procedure”.
(See
F–66 AFTER REPAIR PROCEDURE .)
•
Is there any DTC present?
Yes Go to applicable DTC troubleshooting.
(See F–67 DTC TABLE .)
No Troubleshooting completed.
STEP INSPECTION ACTION
DTC P0111 IAT circuit performance problem
DETECTION
CONDITION
•
If intake air temperature is higher than engine coolant temperature by 40
°
C {104
°
F} with ignition key on,
the PCM determines that there is a IAT sensor performance problem.
Diagnostic support note
•
This is a continuous monitor (CCM).
•
MIL illuminates if PCM detects the above malfunction condition in two consecutive drive cycles or in one
drive cycle while the DTC for the same malfunction has been stored in the PCM.
•
PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.
•
FREEZE FRAME DATA is available.
•
DTC is stored in PCM memory.
POSSIBLE
CAUSE
•
IAT sensor malfunction
•
Poor connection at MAF/IAT sensor or PCM connector
•
PCM malfunction
STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
•
Has FREEZE FRAME DATA been recorded?
Yes Go to next step.
No Record FREEZE FRAME DATA on repair order, then go to
next step.
2 VERIFY RELATED SERVICE INFORMATION
AVAILABILITY
•
Check for related Service Information
availability.
•
Is any related Service Information available?
Yes Perform repair or diagnosis according to available Service
Information.
•
If vehicle is not repaired, go to next step.
No Go to next step.
3 INSPECT POOR CONNECTION OF MAF/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 6.
No Go to next step.
4 INSPECT IAT SENSOR
•
Inspect IAT sensor.
(See
F–50 INTAKE AIR TEMPERATURE (IAT)
SENSOR INSPECTION )
•
Is IAT sensor okay?
Yes Replace MAF/IAT sensor, then go to Step 6.
No Go to next step.