Mazda Protege 5. Manual - part 17
ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (ZM)]
01–02A–34
End Of Sie
DTC P0111 [ZM]
A3U010201084W38
Diagnostic procedure
7
VERIFY EGR BOOST SENSOR SIGNAL
CIRCUIT FOR SHORT TO REFERENCE
VOLTAGE CIRCUIT
•
Check for continuity between EGR boost
sensor terminals A and C (harness-side).
•
Is there continuity?
Yes Repair or replace suspected harness, then go to Step 9.
No
Go to next step.
8
VERIFY EGR BOOST SENSOR SIGNAL
CIRCUIT FOR OPEN CIRCUIT
•
Check for continuity between EGR boost
sensor terminal A (harness-side) and PCM
terminal 34 (harness-side).
•
Is there continuity?
Yes Go to next step.
No
Repair or replace suspected harness, then go to next step.
9
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.
•
Start engine.
•
Is same DTC present?
Yes Replace PCM, then go to next step.
No
No concern is detected. Go to next step.
10
VERIFY AFTER REPAIR PROCEDURE
•
Perform “After Repair Procedure”.
(See 01–02A–10 AFTER REPAIR
PROCEDURE [ZM].)
•
Is there any DTC present?
Yes Go to applicable DTC inspection.
(See 01–02A–15 DTC TABLE [ZM].)
No
Troubleshooting completed.
STEP
INSPECTION
ACTION
DTC P0111
IAT circuit performance problem
DETECTION
CONDITION
•
Intake air temperature is higher than engine coolant temperature by 40
°°°°
C {72
°°°°
F} and ignition key is ON.
Diagnostic support note
•
This is a continuous monitor (CCM).
•
MIL illuminates if PCM detects the above malfunction condition in two consecutive drive cycles.
•
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 REPAIR INFORMATION
AVAILABILITY
•
Check for related Service Bulletins availability.
•
Is any related repair information available?
Yes Perform repair or diagnosis according to available repair
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.
•
Check for poor connection (damaged/pulled-
out pins, corrosion, etc.).
•
Is there malfunction?
Yes Repair or replace terminal, then go to Step 6.
No
Go to next step.
4
INSPECT IAT SENSOR
•
Measure resistance between MAF/IAT sensor
terminals D and E (part-side).
•
Is resistance below 550 ohms?
Yes Replace MAF/IAT sensor, then go to Step 6.
No
Go to next step.
1712-1U-01G(01-02A).fm 34 ページ ２００１年６月２９日 金曜日 午後２時２０分