Suzuki DL1000 Service Manual

FI SYSTEM 4-43
“C24” or “C25” IGNITION SYSTEM MALFUNCTION
*REFER TO THE IGNITION SYSTEM FOR DETAILS. (#7-19)
“C28” STV ACTUATOR CIRCUIT MALFUNCTION
INSPECTION
DETECTED CONDITION POSSIBLE CAUSE
The operation voltage does not reach the STVA.
ECM does not receive communication signal from
the STVA.
• STVA malfunction.
• STVA circuit open or short.
• STVA motor malfunction.
• Remove the fuel tank and air cleaner element. ( : 4-52 and
2-4)
1
2
Ye s
Ye s
No
No
Loose or poor contacts on
the STVA coupler.
Open or short circuit in the
Red and Black wires.
Replace the STVA
with a new one.
Turn the ignition switch OFF.
Check the STVA lead wire coupler for loose or poor
contacts.
Turn the ignition switch ON to check the STV operation.
STV operating order: Half open → full close → Full open
→ 75% open → Half open (about 20 seconds later)
Turn the ignition switch OFF.
Check the STVA lead wire coupler for loose or poor
contacts.
Disconnect the STVA lead wire coupler.
Check the continuity between Red wire and ground.
; STVA continuity: ∞Ω (Infinity)
; STVA resistance: Approx. 4.8 – 7.2 Ω
( + Red – - Black)
z 09900-25008: Multi circuit tester

u Tester knob indication: Resistance (Ω)
Replace the ECM with a new one,
and inspect it again.
If OK, then measure the STVA resistance. (between Red
and Black wires)
Loose or poor contacts on the STVA coupler, or poor J or
L connection. ( : 4-22)
If wire and connection are OK, intermittent trouble or faulty
ECM. Recheck each terminal and wire harness for open
circuit and poor connection. ( : 4-5)
ECM coupler
Ω
Ω
2
1
2
Ground

Suzuki DL1000 Specifications

General

Brand	Suzuki
Model	DL1000
Category	Motorcycle
Language	English