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Toyota Corolla Repair Manual: Coolant thermostat (coolant temperature below thermostat regulating temperature)

Toyota Corolla Repair Manual / Diagnostics / Sfi system / Coolant thermostat (coolant temperature below thermostat regulating temperature)

Dtc p0128 coolant thermostat (coolant temperature below thermostat regulating temperature)

Hint

: this is the purpose of the thermostat malfunction detection.

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, ...

Circuit description
If the engine coolant temperature (ect) does not reach 75c (167f) despite sufficient warm up time has elapsed. Dtc no Dtc detection condition Trouble area P01 ...

Other materials:

Dialing from call histories
1 Select All calls, Missed calls, Incoming calls or Outgoing calls using . 2 Select the desired number using and press the off-hook switch. The following operations can be performed: ● Registering a number as a speed dial Press (Add S. Dial) and then press and hold the desir ...

Circuit description
When the ignition switch is turned on, battery positive voltage is applied to the coilwhich closes the contacts of the efi main relay (marked: efi) and supplies power to terminal +b of the ecm. This signal causes current to flow to the coil, closing the contacts of the efi relay and supplyin ...

Air outlets
■ Location of air outlets The air outlets and air volume changes according to the selected airflow mode. : Some models ■ Adjusting the position of and opening and closing the air outlets ► Front center outlets Direct air flow to the left or right, up or down. ► Fro ...

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