Suzuki Burgman UH125 Service Manual

FI SYSTEM DIAGNOSIS 4-47
“23” (P1651-H/L) TO SENSOR CIRCUIT MALFUNCTION
INSPECTION
Step 1 (When indicating 23:)
1) Turn the ignition switch OFF.
2) Remove the front leg shield. (#8-6)
3) Check the TO sensor coupler

1 for loose or poor contacts.
If OK, then measure the TO sensor resistance.
4) Disconnect the TO sensor coupler.
5) Measure the resistance between terminal

A and terminal

C.
$ TO sensor resistance: 16.5 – 22.3 kΩ
(Terminal

A – Terminal

C)
! 09900-25008: Multi-circuit tester set
% Tester knob indication: Resistance (Ω)
Is the resistance OK?
DETECTED CONDITION POSSIBLE CAUSE
23 The sensor voltage should be the follow-
ing for 2 sec. and more, after ignition
switch is turned ON.
0.2 V Sensor voltage < 4.7 V
• TO sensor circuit open or short
• TO sensor malfunction
• ECM malfunction
P1651
H
Sensor voltage is higher than specified
value.
• TO sensor circuit shorted to VCC or ground circuit
open
• TO sensor circuit open or shorted to ground or
VCC circuit open
L
Sensor voltage is lower than specified
value.
ECM
E2
TOS
O/Bl
B
VCC
TO sensor
Lg
1
YES Go to Step 2.
NO Replace the TO sensor with a new one.
1

Suzuki Burgman UH125 Specifications

General

Brand	Suzuki
Model	Burgman UH125
Category	Scooter
Language	English