Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Combination meter / Malfunction in water temperature receiver gauge
Toyota Corolla (E120): Malfunction in water temperature receiver gauge
Wiring diagram
Inspection procedure
1 Read value of hand–held tester
- Check output value of ecm.
- Connect the hand–held tester to dlc3.
- Turn the ignition switch to on and push the hand–held tester main switch on.
- Select the data list mode on the hand–held tester.
2 Inspect combination meter assy
(Reference) inspection using oscilloscope
- check the input signal waveform.
- Remove the combination meter with connectors still connected.
- Connect the oscilloscope to the terminals c9–8 of combination meter assy and body ground.
- Start engine.
- Check the signal waveform.
3 Check harness and connector(between ecm and combination meter assy)
- Remove the combination meter.
- check the continuity between terminals 14 (thwo) of ecm and c9–8 of
combination meter connector.
Standard: there is continuity.
Check and replace ecm
Other materials:
Inspection procedure
1 Inspect fuse(stop)
Turn the ignition switch to off.
remove the stop fuse from the instrument panel j/b.
check continuity of the stop fuse.
Ok: continuity
2 Inspect stop lamp switch assy
Disconnect the stop lamp switch assy connector.
check continuity betw ...
Starting & charging
Preparation
Sst
Recomended tools
Equipment
...
Replacement
Hint: components:
1. Precaution
2. Disconnect battery negative terminal
3. Remove air bag front rh sensor
Disconnect the connector from the airbag front rh sensor.
remove the 2 bolts and airbag front rh sensor.
4. Inspect air bag front rh sensor
5. Install air bag front rh ...