Yamaha XV1700P Service Manual page 427

Symptom Clock LCD displays "Er-2". (No signals are received from the ECU within the specified duration.)
Probable mal- • Improper operation of communication line
function area • Malfunction in meter
• Malfunction in ECU
Inspection method 1
Inspection by diagnosis mode
Symptom Clock LCD displays "Er-3". (Data from the ECU cannot be received correctly.)
Probable mal- • Improper operation of communication line
function area • Malfunction in meter
• Malfunction in ECU
Inspection method 1
Inspection by diagnosis mode
Symptom Clock LCD displays "Er-4". (Non-registered data has been received from the meter.)
Probable mal- • Improper operation of communication line
function area • Malfunction in meter
• Malfunction in ECU
Inspection method 1
Inspection by diagnosis mode
FUEL INJECTION SYSTEM
Inspection method 2
Inspection of a malfunction that cannot be identified in the
diagnosis mode, and in case the area of the malfunction has
been narrowed down in the inspection method 1 given on the
left.
• Inspect ECU coupler
Inspect the wiring harness and couplers for continuity.
Defective: repair or replace
• Inspect meter coupler
Inspect the wiring harness and couplers for continuity.
Defective: repair or replace
Inspection method 2
Inspection of a malfunction that cannot be identified in the
diagnosis mode, and in case the area of the malfunction has
been narrowed down in the inspection method 1 given on the
left.
• Inspect ECU coupler
Inspect the wiring harness and couplers for continuity.
Defective: repair or replace
• Inspect meter coupler
Inspect the wiring harness and couplers for continuity.
Defective: repair or replace
Inspection method 2
Inspection of a malfunction that cannot be identified in the
diagnosis mode, and in case the area of the malfunction has
been narrowed down in the inspection method 1 given on the
left.
• Inspect ECU coupler
Inspect the wiring harness and couplers for continuity.
Defective: repair or replace
• Inspect meter coupler
Inspect the wiring harness and couplers for continuity.
Defective: repair or replace
6 - 34
FI