
DESCRIPTION
The ECM calculates the difference between the readings of the coolant temperature sensor and intake air temperature sensor. If the difference is greater than 20°C (68°F), the ECM will judge this as a malfunction and will set this DTC.


HINT:
MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

INSPECTION PROCEDURE
1 CHECK ANY OTHER DTCS OUTPUT (IN ADDITION P011B)
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn the tester on.
(d) Enter the following menus: DIAGNOSIS / ENHANCED OBD ll / DTC INFO / CURRENT CODES.
(e) Read the DTCs.
Result 

HINT:
If any DTCs other than P011B are output, troubleshoot those DTCs first.
2 READ VALUE OF INTELLIGENT TESTER (INTAKE AIR TEMPERATURE)
(a) Leave the vehicle for 7 hours or more.
HINT:
It is necessary leave the vehicle for 7 hours or more to allow conditions similar to the DTC detection conditions.
(b) Connect the intelligent tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Turn the tester ON.
(e) Enter the following menus: DIAGNOSIS / ENHANCED OBD ll / DATA LIST / PRIMARY / INTAKE AIR.
(f) Read the value displayed on the tester.
OK: The intake air temperature and the outside air temperature are within 10°C (50°F) of each other.
HINT:
Temperature readings on the vehicle's outside temperature gauge (if equipped) are not suitable for comparing to the IAT reading. The outside temperature gauge has a significant delay built in to prevent temperature swings from being displayed on its display.
Use an accurate thermometer to determine the outside air temperature.

3 READ VALUE OF INTELLIGENT TESTER (COOLANT TEMPERATURE)
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn the tester ON.
(d) Enter the following menus: DIAGNOSIS / ENHANCED OBD ll / DATA LIST / PRIMARY / COOLANT TEMP.
OK: The coolant temperature and the outside air temperature are within 10°C (50°F) of each other.
HINT:
If the result is not as specified, check that there are heat sources such as a block heater in the engine compartment.

REPLACE ECM (See page ES-498)
Engine Coolant Temperature Circuit Range / Performance Problem
Throttle / Pedal Position Sensor / Switch "A"Terminals of ECU
1. CHECK TRANSPONDER KEY AMPLIFIER
Disconnect the I14 amplifier connector and measure
the resistance between the terminal of the wire
harness side connector and body ground.
If the result is not as specified, there may be a
malfunction on the wire harness side.
Reconnec ...
Removal
1. REMOVE INSTRUMENT PANEL SUB-ASSEMBLY WITH PASSENGER AIRBAG ASSEMBLY
HINT:
Refer to the instructions for removal of the instrument
panel sub-assembly w/ passenger airbag assembly (See
page IP-5).
2. REMOVE HEATER TO FOOT DUCT NO.1
(a) Remove the clip and the heater to foot duct No. 1.
3 ...
Perform monitor drive pattern
The monitor results and test values can be checked with
the OBD II scan tool or the intelligent tester. The engine
control module (ECM) monitors the emissions-related
components such as the thermostat, catalyst converter
and evaporative emissions (EVAP), and determines
whether they are function ...