Toyota Corolla Repair Manual: Inspection procedure
Hint
:
- if different dtcs related to different systems that have terminal e2
as the ground terminal are output
simultaneously, terminal e2 may be open.
- Read freeze frame data using the hand-held tester or the obd ii scan
tool. Freeze frame data records
the engine conditions when a malfunction is detected. When troubleshooting,
it is useful for determining
whether the vehicle was running or stopped, the engine was warmed up or not,
the air–fuel ratio
was lean or rich, etc. At the time of the malfunction.
1 Read value of hand–held tester or obd ii scan tool(engine
coolant temperature)
- Connect the hand–held tester or the obd ii scan tool to the dlc3.
- turn the ignition switch on and push the hand–held tester or the
obd ii scan tool main switch on.
- select the item ”diagnosis / enhanced obd ii / data list / all /
coolant temp” and read
its value displayed on the hand–held tester or the obd ii scan tool.
Temperature: same value as the actual intake air temperature.
Result:

Hint
:
if there is an open circuit, the hand–held tester or the obd ii scan tool
indicates –40 °C (–40°f).
If there is a short circuit, the hand–held tester or the obd ii scan tool
indicates 140 °C (284°f) or more.


2 Read value of hand–held tester or obd ii scan tool(check for
open in wire harness)

- Disconnect the e2 engine coolant temperature sensor
connector.
- connect terminals 1 and 2 of the engine coolant temperature
sensor connector on the wire harness side.
- turn the ignition switch on.
- select the item ”diagnosis / enhanced obd ii /
data list / all / coolant temp” and read its value
displayed on the hand–held tester or the obd ii scan tool.
Temperature value: 140 °C (284°f) or more
- reconnect the engine coolant temperature sensor connector.



3 Read value of hand–held tester or obd ii scan tool(check for
open in ecm)

- Disconnect the e2 engine coolant temperature sensor
connector.
- connect the terminals thw and e2 of the e3 ecm connector.
Hint
:
before checking, do a visual and contact pressure check on the
ecm connector.
- turn the ignition switch on.
- select the item ”diagnosis / enhanced obd ii /
data list / all / coolant temp” and read its value
displayed on the hand–held tester or the obd ii scan tool.
Temperature value: 140 °C (284°f) or more
- reconnect the engine coolant temperature sensor connector.



Confirm good connection at ecm. If ok, replace ecm
4 Read value of hand–held tester or obd ii scan tool(check for
short in wire harness)

- Disconnect the e2 engine coolant temperature sensor
connector.
- turn the ignition switch on.
- select the item ”diagnosis / enhanced obd ii /
data list / all / coolant temp” and read its value
displayed on the hand–held tester or the obd ii scan tool.
Temperature value: –40 °C (–40°f)
- reconnect the engine coolant temperature sensor connector.


5 Read value of hand–held tester or obd ii scan tool(check for
short in ecm)

- Disconnect the e3 ecm connector.
- turn the ignition switch on.
- ) select the item ”diagnosis / enhanced obd ii /
data list / all / coolant temp” and read its value
displayed on the hand–held tester or the obd ii scan tool.
Temperature: –40 °C (–40°f)
- reconnect the ecm connector.



Replace ecm
A thermistor is built in the engine coolant temperature sensor and changes
the resistance value according
to the engine coolant temperature.
The structure of the sensor and connection to the ecm ...
Dtc p0116 engine coolant temp. Circuit
range/performance problem ...
Other materials:
Automatic transaxle fluid (atm)
On–vehicle inspection
1. Check the fluid level
Hint:
drive the vehicle so that the engine and transaxle are at normal
operating temperature.
Fluid temperature: 70 – 80 °c (158 – 176 °f)
park the vehicle on a level surface and set the parking
brake.
with the engine idling ...
Circuit description
Refer to dtcs p0100
Dtc no.
Dtc detection condition
Trouble area
P0101
After engine is warmed up, conditions (a) to (d) continue for
more than 10 seconds (2 trip detection logic):
engine speed less than 900 rpm
throttle valve fully closed
&nbs ...
Bluetooth® Audio (Multimedia system)
Listening to Bluetooth® Audio
The Bluetooth® audio system enables the user to enjoy music played on a portable
player from the vehicle speakers via wireless communication.
When a Bluetooth® device cannot be connected, check the connection status on
the “Bluetooth* Audio” screen. If the device ...