Diagnosis Mode; Co, Diagnosis Switch Box Method - Yamaha YZF-R7 Owner's Service Manual

DIAGNOSIS MODE

There are two operation methods for this mode: one is performed using the CO, diagnosis
switch box, the other is performed using the test coupler adapter. With the CO, diagnosis
switch box method, the switches on the CO, diagnosis switch box are used. With the test cou-
pler adapter method, the start switch and the engine stop switch are used. The procedures for
selecting and using each method is explained below.
NOTE:
The engine cannot be started, the vehicle cannot be ridden, and no other mode can be
selected while either of the diagnosis mode operation methods is being performed.
ELECTRICAL CONTROL SYSTEM

CO, diagnosis switch box method

• Remove the bottom cowling and the front
• Remove the protection cap 1 from the EFI
• Connect the CO, diagnosis switch box 3
• Turn the main switch to "ON".
• Turn the engine stop switch to "
• Within 4 seconds, press the following
4 MODE switch = 1
5 UP switch = 2
6 DOWN switch = 3
1
1
The warning light flashes when the unit has
entered the diagnosis mode.
NOTE:
Turn the main switch to "OFF" to cancel the
diagnosis mode.
8 - 33
cowling.
Refer to "COWLINGS" in chapter 3.
test coupler 2.
to the EFI test coupler 2.
CO, diagnosis switch box
90890-03171
switches on the CO, diagnosis switch box
in the order indicated to enter the diagno-
sis mode.
2 1 3 1
3
– +
ELEC
".
2 1 3 1 2