Suzuki LT-A450X, Manual

Page: 254 / 528

5-38 FI SYSTEM DIAGNOSIS
Step 1 (When indicating P0120-L:)
1) Remove the left side cover. (
$
8-9)
2) Turn the ignition switch to OFF.
3) Check the TP sensor coupler for loose or poor contacts.
If OK, then check the TP sensor lead wire continuity.
4) Disconnect the TP sensor coupler.
5) Check the continuity between Yellow wire
B
and ground.
6) Also, check the continuity between Yellow wire
B
and B/O
wire
C
. If sound is not heard from the tester, the circuit condi-
tion is OK.
7) Disconnect the ECM coupler.
8) Check the continuity between Red wire
A
and terminal
6
.
9) Also, check the continuity between Yellow wire
B
and termi-
nal
C
.
&
TPS lead wire continuity: Continuity (
5
)
%
09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
6
Tester knob indication: Continuity test (
5
)
#
Is the continuity OK?
T
10) After repairing the trouble, clear the DTC using SDS tool.
(
$
5-23)
1
1
When us ing the multi-circuit te ster, do no t strongly
touch th e te rminal of the ECM c oupler with a ne edle
pointed te ster p robe t o pre vent th e te rminal da mage
or terminal bend.
YES Go to Step 2.
NO
Red wire or Yellow wire open, or Yellow wire
shorted to ground.
1
ECM coupler (Harness side)