ON-BOARD DIAGNOSTIC
STEP
INSPECTION ACTION
5
INSPECT IAT SIGNAL CIRCUIT FOR SHORT
TO GROUND
• Turn ignition key to OFF.
• Disconnect PCM connector.
• Check continuity between MAF sensor
terminal A (harness-side) and body ground.
• Is there any continuity?
Yes
Repair or replace harness, then go to Step 7.
No Go to next step.
6
INSPECT IAT CIRCUITS FOR SHORT
• Check continuity between MAF sensor
terminals A and B (harness-side).
• Is there any continuity?
Yes
Repair or replace harness, then go to Step 7.
No Go to next step.
7
VERIFY TROUBLESHOOTING OF DTC P0112
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from PCM memory using NGS
tester.
• Start engine.
• Is same DTC present?
Yes
Replace PCM, then go to next step.
No Go to next step.
8
VERIFY AFTER REPAIR PROCEDURE
• Perform “After Repair Procedure."
(See F1-36 AFTER REPAIR PROCEDURE)
• Are there any DTCs present?
Yes Go to applicable DTC inspection.
(See F1-37 DTC TABLE)
No
Troubleshooting completed.
F1-46
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