Dtc P0112 - Mazda 2002 6 Workshop Manual

STEP
5 INSPECT POOR CONNECTION OF PCM
CONNECTOR
• Disconnect PCM connector.
• Inspect for poor connection (damaged, pulled-
out pins, corrosion, etc.).
• Are there any malfunction?
6 VERIFY TROUBLESHOOTING OF DTC P0111
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from PCM memory using WDS or
equivalent.
• Start engine and run engine under FREEZE
FRAME DATA condition.
• Is PENDING CODE the same as DTC
present?
7 VERIFY AFTER REPAIR PROCEDURE
• Is there any DTC present?
End Of Sie

DTC P0112

DTC P0112 IAT circuit low input
• PCM monitors IAT sensor signal at PCM terminal 2E. If PCM detects IAT sensor voltage below 0.15 V,
PCM determines that IAT sensor circuit has malfunction.
Diagnostic support note
• This is a continuous monitor (CCM).
DETECTION
• MIL illuminates if PCM detects the above malfunction condition during first drive cycle.
CONDITION
• PENDING CODE is available if PCM detects the above malfunction condition.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.
• IAT sensor malfunction
• Short to ground circuit between MAF/IAT sensor terminal D and PCM terminal 2E
POSSIBLE
• Short each harness IAT signal circuit and IAT ground circuit.
CAUSE
• PCM malfunction
ON-BOARD DIAGNOSTIC
INSPECTION
Yes Repair or replace terminal, then go to Step 6.
No Go to next step.
Yes Replace PCM, then go to next step.
(See F–43 PCM REMOVAL/INSTALLATION.)
No Go to next step.
Yes Go to applicable DTC troubleshooting.
(See F–67 DTC TABLE.)
No Troubleshooting completed.
ACTION
A6E397001084W14
F–91
F