Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Electronic controlled automatic transaxle / O/d main switch circuit / Inspection procedure
Toyota Corolla (E120): Inspection procedure
1 Check harness and connector(transmission control switch – body ground)
- Disconnect the transmission control switch connector of shift lever assy.
- measure the resistance according to the value(s) in the table below.
Standard:
2 Inspect transmission control switch
- Measure the resistance according to the value(s) in the table below.
Standard:
3 Check harness and connector(transmission control switch – ecm)
- Connect the transmission control switch connector of shift lever assy.
- disconnect the ecm connector.
- measure the resistance according to the value(s) in the table below.
Standard:
Proceed to next circuit inspection shown on problem symptoms table
Other materials:
Drive shaft / propeller shaft
Preparation
Sst
Recomended tools
Equipment
Lubricant
...
Symptom confirmation and diagnostic trouble code
Hint:
the diagnostic system in corolla has various functions. The first
function is the diagnostic trouble
code (dtc) check, in which a malfunction in the signal circuits to the ecu
is stored in code form in
the ecu memory. Another function is the input signal check, which checks if
...
Circuit description
The intake air temperature (iat) sensor, mounted on the mass
air flow (maf) sensor, monitors the intake air temperature. The
iat sensor has a thermistor that varies its resistance depending
on the temperature of the intake air. When the air temperature
is low, the resistance in the thermisto ...