I dont have a manual for that year but on earlier models section 3-34
The mauals are availble if you do a bit of searching in an "Uber secret resource" location
• To enter the self-diagnosis dealer mode 2, open and
ground [A] the lead more than five times [F] within 2 seconds [C] after the lead is first grounded, and then keep it
grounded continuously [D] for more than 2 seconds.
○Count the blinks of the light (LED) to read the service
code. Keep the auxiliary lead ground until you finish reading the service code.
Auxiliary Lead [E]
Self-diagnosis Terminal [G]
NOTE
○To enter the dealer mode 2 from the dealer mode 1, turn
off the ignition switch once.
Service Code Clearing Procedures
• Enter the self-diagnosis dealer mode 2 (see Self
-diagnosis Procedures).
NOTE
○Make sure to keep the grounding until the following
opening and grounding starts.
• Pull the clutch lever in more than 5 seconds, and then
release it.
• Repeat opening and grounding [A] the lead
(self-diagnosis terminal) more than five times [F] within 2
seconds [C] after the lead is grounded, and then keep it
grounded continuously [D] for more than 2 seconds.
Auxiliary Lead [E]
Self-diagnosis Terminal [G)