roof YAMAHA WR 450F 2007 Owners Manual

6 - 21
–+ELECTPS (THROTTLE POSITION SENSOR) SYSTEM
6. Adjust:
•Idle speed
Refer to “IDLE SPEED ADJUSTMENT”
section in the CHAPTER 3.
7. Insert the thin electric conductors 2 (lead)
into the TPS coupler 1, as shown, and
connect the tester to them.
CAUTION:
Do not insert the electric conductors
more than required because it may
reduce the waterproof function of the
coupler.
Make sure that a short-circuit does not
develop between the terminals because it
may cause damage to electrical compo-
nents.
8. Start the engine.Tester (+) lead
→ Yellow lead
3
Tester (–) lead
→ Black lead
4
9. Adjust:
•TPS output voltage
Adjustment steps:
Adjust the installation angle of the TPS 1 to
obtain the specified output voltage.
NOTE:
Measure the output voltage accurately with
a digital electronic voltmeter that gives an
easy reading of a small voltage.
TPS output
voltageTester selector
position
0.58 ~ 0.78 V DCV

6 - 28
–+ELECSIGNALING SYSTEM
3. Measure:
•Multi-function display output voltage
Out of specification → Replace multi-
function display.
CAUTION:
Make sure that a short-circuit does not
develop between the terminals because it
may cause damage to electrical compo-
nents.Tester (+) lead
→ Red lead
1
Tester (–) lead
→ Black/White lead
2
Multi-function dis-
play output voltageTester selec-
tor position
4.5 V or more DCV-20
SPEED SENSOR OUTPUT VOLTAGE
INSPECTION
1. Insert the thin electric conductors 1 (lead)
into the speed sensor coupler 2, as
shown, and connect the tester to them.
CAUTION:
Do not insert the electric conductors
more than required because it may
reduce the waterproof function of the
coupler.
Make sure that a short-circuit does not
develop between the terminals because it
may cause damage to electrical compo-
nents.
2. Set the main switch to “ON”. Tester (+) lead
→ White lead
3
Tester (–) lead
→ Black lead
4