Detected condition and possible cause
Detected condition |
Possible cause |
|
C40/P0505 | The circuit voltage of motor drive is unusual. |
|
C40/P0506 | Idle speed is lower than the desired idle speed. | |
C40/P0507 | Idle speed is higher than the desired idle speed. |
Wiring diagram
Troubleshooting
Caution
|
Note after repairing the trouble, clear the dtc using sds tool. Refer to “use of sds diagnosis reset procedures” . |
Step |
Action |
Yes |
No |
1 |
Special tool Tester knob indication
continuity test ( Ecm couplers (harness side) Is the continuity ok? |
Go to step 2. | Bl, y, g or br wire open |
2 |
Special tool
Tester knob indication resistance (Ω) Isc valve continuity ∞Ω¶ (infinity) (terminal . Ground)
Isc valve resistance approx. 80 Ω at 20 °c (68 °f) (terminal: “a” – terminal: “b”, terminal: “c” – terminal: “d”) Is the resistance ok? |
If wire is ok, intermittent trouble or faulty ecm. | Replace the isc valve with a new one. Refer to “throttle body removal and installation” in section 1d (page 1d- 10). |
Active control inspection (isc rpm control)
Check 1
Check 2
Check 3
Check 4
Note be careful not to increase the “spec” to 2 000 rpm, or the “engine speed” may reach the upper limit. |
If the isc valve does not function properly, inspect the isc valve or replace the isc valve. Refer to “dtc “c40” (p0505 / p0506 / p0507): isc valve circuit malfunction” or “throttle body disassembly and assembly” in section 1d .
Drive chain replacement
Use the special tool in the following procedures, to cut
and rejoin the drive chain.
Note
when using the special tool, apply a small
quantity of grease to the threaded parts of
the special tool.
Special tool
: 09922–22711 (drive chain cutting
and joint
tool set)
Driv ...
Symbols
Listed in the table below are the symbols indicating instructions and other
information necessary for servicing.
The meaning of each symbol is also included in the table.
Abbreviations
A:
abdc: after bottom dead center
ac: alternating current
acl: air cleaner, air cleaner box
api: ame ...
Engine components removable with the
engine in place
Engine components which can be removed while the engine is installed on the
frame are as follows. For the installing
and removing procedures, refer to respective paragraphs describing each
component.
Center of engine
Item
Removal
Inspection
Installation
...