DTC P0116 Engine Coolant Temperature Circuit Range / Performance Problem
DESCRIPTION
Refer to DTC P0115
DTC No. |
DTC Detection Condition |
Trouble Area |
P0116 |
ECTs as listed below are nearly same (2 trip detection
logic):
|
|
ECTs as listed below are nearly same when engine is
started at higher than 60C (140F) of ECT (2 trip
detection logic)
|
||
When either of following conditions is met (2 trip
detection logic):
|
MONITOR DESCRIPTION
The ECT sensor is used to monitor the ECT. The ECT sensor has a built-in thermistor with a resistance that varies according to the temperature of the engine coolant. When the ECT becomes low, the resistance of the thermistor increases. When the temperature becomes high, the resistance drops. These variations in the resistance are reflected in the voltage output from the ECT sensor.
The ECM monitors the sensor voltage and uses this value to calculate the ECT. If the sensor voltage output deviates from the normal operating range, the ECM interprets this deviation as a malfunction in the ECT sensor and sets the DTC.
Examples:
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
All:
ECT sensor cold start monitor:
ECT sensor soak monitor:
TYPICAL MALFUNCTION THRESHOLDS
ECT sensor cold start monitor:
ECT sensor soak monitor:
COMPONENT OPERATING RANGE
INSPECTION PROCEDURE
HINT:
1 CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0166)
Result
2 INSPECT THERMOSTAT
Standard: 80 to 84C (176 to 183F)
HINT: In addition to the above check, confirm that the valve is completely closed when the temperature is below the standard.
REPLACE ENGINE COOLANT TEMPERATURE SENSOR
GCWR, TWR and Unbraked TWR
Confirm that the gross trailer weight, gross combination weight, gross
vehicle weight, gross axle weight and tongue weight are all within the
limits.
GCWR*
2WD models: 8900 lb. (4037 kg)
AWD models: 8990 lb. (4078 kg)
TWR*
3500 lb. (1588 kg)
Unbraked TWR*
1000 lb. (454 kg)
*: These models ...
Active head restraints
When the occupant’s lower back
presses against the seatback during
a rear-end collision, the head
restraint moves slightly forward
and upward to help reduce the
risk of whiplash on the seat occupant
Active head restraints
Even small forces applied to the seatback may cause the head rest ...
Removal
1. Remove v-bank cover sub-assembly (see
page em-28)
2. Remove front wheel rh
3. Remove no. 1 Engine under cover (see page
em-26)
4. Remove front fender apron seal rh (see
page em-26)
5. Drain engine coolant (see page co-6)
6. Remove no. 2 Air cleaner inlet (see page em-
28)
7. Remove batt ...