DTC P115E [MZI-3.5]
DTC P115E (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES
z
Turn the ignition switch to the ON
position (Engine running)
z
Verify that the engine is at normal
operating temperature.
z
Access the PCM and monitor the
HO2S heater PID.
z
Is the PID state ON?
Perform the KOER self-test, then go to the
next step.
(See
KOEO/KOER SELF TEST [MZI-
3.5]
.)
4
VERIFY TROUBLESHOOTING OF
DTC P1127 HAS BEEN
COMPLETED
z
Verify that all disconnected
connectors reconnected.
z
Clear DTC from memory using
M-MDS.
z
Start engine.
z
Perform "KOEO/KOER self-test"
(See
KOEO/KOER SELF TEST
[MZI-3.5]
.)
z
Is same DTC present?
Yes
Replace PCM, then go to the next step.
(see
PCM
REMOVAL/INSTALLATION [MZI-
3.5]
.)
No
Go to the next step.
5
VERIFY AFTER REPAIR
PROCEDURE
z
Perform "AFTER REPAIR
PROCEDURE".
(See
AFTER REPAIR
PROCEDURE [MZI-3.5]
.)
z
Are any DTC present?
Yes
Go to the applicable DTC inspection.
(See
DTC TABLE [MZI-3.5]
.)
No
Troubleshooting completed.
DTC P115E
Throttle actuator control throttle body air flow trim at max limit
DETECTION
CONDITION
z
During idle, the PCM monitors the throttle angle and air flow. If the air flow
is determined to be less than expected, the PCM adjusts the throttle angle to
compensate. The air flow reduction is typically the result of sludge buildup
around the throttle plate. This DTC indicates the PCM has reached the
maximum allowed compensation and is no longer able to compensate for the
build up.
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:36 AM
Page 343
© 2005 Mitchell Repair Information Company, LLC.