Honda CBR650RA Shop Manual page 461

dummyhead dummyhead
TACHOMETER
SYSTEM INSPECTION
If the tachometer does not operate, check the following:
• Combination meter initial operation (page 21-6)
• Combination meter indication when the serial communication line is abnormal (page 4-3)
• CKP sensor
– ED, IIED, IIIED, IVED, FO, IIFO, KO, IIKO models (page 4-83)
– MA, IIMA, IN, TH, IITH, U, IIU, BR, IIBR models (page 5-9)
If the above items are OK, replace the combination meter (page 21-6).
COOLANT TEMPERATURE GAUGE/ECT SENSOR
SYSTEM INSPECTION
• If the coolant temperature gauge does not operate, refer to combination meter initial operation check (page
21-6).
If the coolant temperature gauge does not operate properly, check the following:
• MIL blinking: If the MIL blinks, check the PGM-FI DTC
– ED, IIED, IIIED, IVED, FO, IIFO, KO, IIKO models (page 4-12)
– MA, IIMA, IN, TH, IITH, U, IIU, BR, IIBR models (page 4-46)
• Combination meter indication when the serial communication line is abnormal (page 4-3)
• ECT sensor (page 21-11)
If the above items are OK, replace the combination meter (page 21-6).
ECT SENSOR INSPECTION
Remove the ECT sensor (page 4-79).
Suspend the ECT sensor [1] in a pan of coolant (1:1
antifreeze and distilled water mixture) on an electric
heating element and measure the resistance between
the sensor terminals as the coolant heats up.
• Soak the ECT sensor in coolant up to its threads
with at least 40 mm (1.6 in) from the bottom of the
pan to the bottom of the sensor.
• Keep the temperature constant for 3 minutes before
testing. A sudden change of temperature will result
in incorrect readings. Do not let the thermometer [2]
or ECT sensor touch the pan.
TEMPERATURE
RESISTANCE
Replace the ECT sensor if it is out of specification by more than 10% at any temperature listed.
Install the ECT sensor (page 4-79).
40°C (104°F) 100°C (212°F)
1.0 – 1.3 kΩ 0.1 – 0.2 kΩ
LIGHTS/METERS/SWITCHES
[1]
[2]
21-11