Yamaha YZF-R1 Series Service Manual page 581

A
1
A. Stepping motor coupler
B. Connection wiring diagram
b. Measure the resistance of the stepping motor between "1" and "2".
14.8–18.2 Ω (When the motor is cold at 20 °C (68 °F))?
YES
→ Go to step c.
NO
a. Replace the stepping motor.
Refer to "FRONT FORK (for YZF-R1M)" on page 4-100 and "REAR SHOCK ABSORBER ASSEM-
BLY" on page 4-112.
b. Turn the main switch to "ON". Check the condition of the DTC using the malfunction mode of the
YDT.
Is it in the "Recovered" condition?
YES
→ Service is completed.
NO
→ Go to step c.
c. Connect the digital circuit tester (Ω) to the stepping motor.
• Positive tester probe "3"
• Negative tester probe "4"
d. Measure the resistance of the stepping motor between "3" and "4".
14.8–18.2 Ω (When the motor is cold at 20 °C (68 °F))?
YES
→ Go to step 6.
NO
a. Replace the stepping motor.
Refer to "FRONT FORK (for YZF-R1M)" on page 4-100 and "REAR SHOCK ABSORBER ASSEM-
BLY" on page 4-112.
b. Turn the main switch to "ON". Check the condition of the DTC using the malfunction mode of the
YDT.
Is it in the "Recovered" condition?
YES
→ Service is completed.
NO
→ Go to step 6.
6. Malfunction in SCU.
• Replace the SCU.
Refer to "GENERAL CHASSIS (6)" on page 4-23.
2 3 4
B
9-84
C1003
1 3
2 4