Detected condition and possible cause
Detected condition |
Possible cause |
||
C14 | Output voltage is not within the following
range. Difference between actual throttle opening and opening calculated by ecm is larger than specified value. 0.2 V ≤ Sensor voltage < 4.8 V |
|
|
P0120 | H | Sensor voltage is higher than specified value. |
|
L | Sensor voltage is lower than specified value. |
Wiring diagram
Troubleshooting
Caution when using the multi-circuit tester, do not strongly touch the terminal of the ecm coupler with a needle pointed tester probe to prevent terminal damage. |
Note after repairing the trouble, clear the dtc using sds tool. Refer to “use of sds diagnosis reset procedures” . |
C14 (use of mode select switch)
Step |
Action |
Yes |
No |
1 |
Special tool
Tester knob indication
voltage ( Tp sensor input voltage 4.5 – 5.5 V ((+) terminal: r – (–) terminal: ground, (+) terminal: r – (–) terminal: b/br) Is the voltage ok? |
Go to step 3. |
|
P0120-h (use of sds)
Step |
Action |
Yes |
No |
1 |
Special tool Tester knob indication
continuity (
Special tool Tester knob indication continuity test ( ) Ecm couplers (harness side) Is the continuity ok? |
Go to step 3. | P/b wire shorted to vcc, or b/br wire open |
P0120-l (use of sds)
Step |
Action |
Yes |
No |
1 |
Special tool Tester knob indication
continuity test (
Special tool Tester knob indication
continuity test ( Ecm couplers (harness side) Is the continuity ok? |
Go to step 2. | R or p/b wire open, or y/w wire shorted to ground. |
2 |
Special tool Tester knob indication
voltage ( Tp sensor input voltage 4.5 – 5.5 V ((+) terminal: r – (–) terminal: ground, (+) terminal: r – (–) terminal: b/br) Is the voltage ok? |
Go to step 3. | Open or short circuit in the r or b/br wire. |
3 |
Special tool Tester knob indication
voltage ( Tp sensor output voltage throttle valve is closed: approx. 1.1 V throttle valve is opened: approx. 4.4 V ((+) terminal: p/b – (–) terminal: b/br) Is the voltage ok? |
|
If check result is not
satisfactory, replace tp
sensor with a new one. Refer to “throttle body disassembly and assembly” in section 1d . |
Precautions
Precautions for engine cooling system
You can be injured by boiling fluid or steam if you open the
radiator cap when the engine is hot.
After the engine cools, wrap a thick cloth around cap and carefully
remove the cap by turning it a
quarter turn to allow pr ...
Engine top side assembly
Assemble the engine top side in the reverse order of
disassembly. Pay attention to the following points:
Cylinder head
Install the dowel pins and a new cylinder head gasket
(1) to the cylinder.
Caution
use a new gasket to prevent gas leakage.
Place the cylinder head ...
Ignition coil and spark plug removal and
installation
Removal
The hot
engine can burn you.
Wait until the engine is cool enough to touch.
Turn the ignition switch off.
Remove the air cleaner box. Refer to “air cleaner box removal and
installation” in section 1d .
Disconnect the lead wire couplers (1).
...