Visually inspect the isc valve if necessary.

Throttle body inspection and cleaning
Throttle valve synchronizationDtc “c36” (p1764), “c37” (p1765), “c38” (p1766) or “c39” (p1767): secondary
fuel injector circuit
malfunction
Detected condition and possible cause
Detected condition
Possible cause
Some failure exists in the fuel injector signal in a high
load, high revolution condition.
Injector circuit open or short.
Injector malfunction.
Ecm malfunction.
...
Charging system symptom diagnosis
Condition
Possible cause
Correction / reference item
Generator does not
charge
Open- or short-circuited lead wires, or
loose lead connections.
Repair, replace or connect properly.
Short-circuited, grounded or open
generator coil.
Replace
...
Stp sensor removal and installation
Removal
Remove the throttle body. Refer to “throttle body
removal and installation” in section 1d (page 1d-
10).
Remove the stp sensor (1) with the special tool.
Special tool
: 09930–11950 (torx wrench (5 mm))
Note
prior to disassembly, mark the stp sensor’s
origina ...