DTC P0116 [MZI-3.7]
DTC P0116 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
5
z
While observing the PID, wiggle,
shake, and bend small sections of the
wiring harness while working from the
sensor to the PCM.
z
Is there a large change in the voltage
reading?
No
Go to the next step.
6
VERIFY TROUBLESHOOTING OF DTC
P0114 HAS BEEN COMPLETED
z
Verify that all disconnected connectors
reconnected.
z
Turn the ignition switch to the ON
position (Engine off).
z
Clear the DTC from the PCM memory
using the M-MDS.
z
Start the engine and run it at idle.
z
Retrieve DTCs using the M-MDS.
z
Is the PENDING CODE for this DTC
present?
Yes
Replace the PCM, then go to the next step.
(See
PCM REMOVAL/INSTALLATION
[MZI-3.7]
.)
No
Go to the next step.
7
VERIFY AFTER REPAIR PROCEDURE
z
Perform the "AFTER REPAIR
PROCEDURE". (See
AFTER
REPAIR PROCEDURE [MZI-3.7]
.)
z
Are any DTCs present?
Yes
Go to the applicable DTC inspection. (See
DTC TABLE [MZI-3.7]
.)
No
Troubleshooting completed.
DTC P0116
CHT sensor circuit range/performance
DETECTION
CONDITION
z
Indicates the engine coolant temperature logic test has failed. This DTC indicates
that the CHT value is higher than the calibrated value and could prevent 1 or
more OBD monitors from completing. The PCM runs this logic after an engine
off and a calibrated soak period (typically 6 hours). This soak period allows the
IAT and the CHT to stabilize and not differ by more than a calibrated value.
DTC P0116 is set when all of the following conditions are met:
{
The CHT at engine start exceeds the IAT at engine start by more than a
calibrated value, typically
17°C {30°F}.
{
The CHT exceeds a calibrated value, typically
107°C {225°F}.
{
The fuel system, heated oxygen and misfire monitors have not completed.
{
The calibrated time to set DTC P0116 has expired.
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:35 AM
Page 71
© 2005 Mitchell Repair Information Company, LLC.
