Mazda CX-7 2007 Workshop Manual page 104

STEP
3 INSPECT IAT SENSOR CONNECTOR FOR
POOR CONNECTION
• Turn the ignition switch off.
• Disconnect the MAF/IAT sensor connector.
• Inspect for poor connection (such as damaged/
pulled-out pins, corrosion).
• Is there any malfunction?
4 CLASSIFY IAT SENSOR MALFUNCTION OR
HARNESS MALFUNCTION
• Connect the M-MDS to the DLC-2.
• Access the IAT PID.
• Connect a jumper wire between MAF/IAT
sensor terminals D and E (harness-side).
• Verify the IAT value.
• Is the voltage below 4.9 V?
5 INSPECT IAT SENSOR SIGNAL CIRCUIT FOR
SHORT TO POWER SUPPLY
• Turn ignition switch to the ON position (Engine
off).
• Measure the voltage between MAF/IAT sensor
terminal D (wiring harness-side) and body
ground.
• Is the voltage B+?
6 INSPECT PCM CONNECTOR FOR POOR
CONNECTION
• Turn the ignition switch off.
• Disconnect PCM connector.
• Inspect PCM terminals 1M and 1AR (harness-
side) for tightness using a feeler tool.
• Is there any malfunction?
7 INSPECT IAT SENSOR SIGNAL CIRCUIT FOR
OPEN CIRCUIT
• Inspect for continuity between MAF/IAT sensor
terminal D (harness-side) and PCM terminal
2V (harness-side).
• Is there continuity?
8 INSPECT IAT SENSOR GROUND CIRCUIT FOR
OPEN CIRCUIT
• Inspect for continuity between MAF/IAT sensor
terminal E (harness-side) and PCM terminal
2H (harness-side).
• Is there continuity?
9 VERIFY TROUBLESHOOTING OF DTC P0113
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Turn ignition switch to the ON position (Engine
off).
• Clear the DTC from the PCM memory using
the M-MDS.
• Start the engine and warm it up completely.
• Is same DTC present?
10 VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
(See01-02-10 AFTER REPAIR
PROCEDURE[L3 WITH TC].)
• Are any DTCs present?
End Of Sie
01-02–62
ON-BOARD DIAGNOSTIC [L3 WITH TC]
INSPECTION
Yes Repair or replace the terminal, then go to Step 9.
No Go to the next step.
Yes Replace the MAF/IAT sensor, then go to Step 9.
No Go to the next step.
Yes Repair or the wiring replace wiring harness for a short to
the power supply, then go to Step 9.
No Go to the next step.
Yes Repair or replace the terminal, then go to Step 9.
No Go to the next step.
Yes Go to the next step.
No Repair or replace the wiring harness for an open circuit,
then go to Step 9.
Yes Go to the next step.
No Repair or replace the wi ring harness for an open circuit,
then go to the next step.
Yes Replace the PCM, then go to the next step.
(See01-40-6 PCM REMOVAL/INSTALLATION[L3 WITH
TC].)
No Go to the next step.
Yes Go to the applicable DTC inspection.
(See01-02-13 DTC TABLE[L3 WITH TC].)
No Troubleshooting completed.
ACTION