Toyota Tacoma manuals

Toyota Corolla Repair Manual: Circuit description

Refer to dtc p0115

Dtc no.

Dtc detection condition

Trouble area

P0116 If engine coolant temperature (ect) was between 35 c (95 F) and 60 c (140 F) when starting the engine, and also conditions (a) and (b) are met:
  1.  vehicle has run with acceleration and deceleration
  2.  etc still remains within 3 c (5.4 F) of the starting temperature (2 trip detection logic)
  • Engine coolant temperature sensor
If engine coolant temperature (ect) was more than 60 c when starting the engine, and also conditions (a) and (b) are met:
  1.  vehicle has run with acceleration and deceleration
  2.  ect still remains within 1 c (1.8 F) of the starting temperature (6 trip detection logic)

Monitor description

The engine coolant temperature (ect) sensor is used to monitor the engine coolant temperature. The ect sensor has a thermistor that varies its resistance depending on the temperature of the engine coolant. When the coolant temperature is low, the resistance in the thermistor increases. When the temperature is high, the resistance drops. The variations in resistance are reflected in the voltage output from the sensor. The ecm monitors the sensor voltage and uses this value to calculate the engine coolant temperature. When the sensor output voltage deviates from the normal operating range, the ecm interprets this as a fault in the ect sensor and sets a dtc.

Examples:

  1.  upon starting the engine, the coolant temperature (ect) was between 35 c (95 F) and 60 c (140 F).

    If after driving for 250 seconds, the ect still remains within 3 c (5.4 F) of the staring temperature, a dtc will be set. (2 Trip detection logic)

  2.  upon starting the engine, the coolant temperature (ect) was over 60 c (140 F). If after driving for 250 seconds, the ect still remains within 1 c (1.8 F) of the starting temperature, a dtc will be set. (6 Trip detection logic)

Monitor strategy

Typical enabling conditions

Typical enabling conditions

Typical malfunction thresholds

Typical malfunction thresholds

Component operating range

Component operating range

Wiring diagram

Wiring diagram

Refer to dtc p0115

Engine coolant temp. Circuit range/performance problem
Dtc p0116 engine coolant temp. Circuit range/performance problem ...

Inspection procedure
Hint: if dtcs p0115, p0116, p0117, p0118 and p0125 are output simultaneously, the engine coolant temperature sensor circuit may be open or short. Perform the troubleshooting of dtc p0115, ...

Other materials:

Circuit description
The side airbag sensor assy (rh) circuit consists of the diagnosis circuit and lateral deceleration sensor, etc. It receives signals from the lateral deceleration sensor, judges whether or not the srs must be activated, and detects diagnosis system malfunction. Dtc b1140/32 is recorded wh ...

Inspection procedure
Hint: if dtcs p0115, p0116, p0117, p0118 and p0125 are output simultaneously, the engine coolant temperature sensor circuit may be open or short. Perform the troubleshooting of dtc p0115, p0117 or p0118 first. Read freeze frame data using the hand-held tester or the obd ii scan to ...

Malfunction in clock
Wiring diagram Inspection procedure 1 Inspect fuse Check the continuity in cig fuse.  check the continuity in dome fuse. 2 Inspect harness or connector Check voltage.  Remove the clock assy with connector still connected.  Measure voltage between ter ...

2011-2021 Copyright www.tcorolla.net