Mazda CX-9 Grand Touring 2007 Manual page 419

2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Are any DTCs present?
DTC P0116 [MZI-3.5]
DTC P0116 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES
DTC P0116 CHT sensor circuit range/performance
DETECTION
CONDITION
POSSIBLE CAUSE
DIAGNOSTIC PROCEDURE
DTC P0116 (MZI-3.5) DIAGNOSTIC PROCEDURE
STEP
1 VERIFY FREEZE FRAME DATA
HAS BEEN RECORDED
Has FREEZE FRAME DATA
been recorded?
2 VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
Verify related Service Bulletins
and/or on-line repair information
availability.
Is any related Service Bulletins
2007 Mazda CX-9 Grand Touring
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.
Cooling system malfunction
CHT sensor malfunction
INSPECTION ACTION
Yes Go to the next step.
No Record FREEZE FRAME DATA on the
repair order, then go to the next step.
Yes Perform repair or diagnosis according to
the available Service Bulletins.
If the vehicle is not repaired, go to next
step.
No Go to the next step.