ECU Communication Line Inspection
When the data is not sent from the ECU to the meter unit for more than about 10 seconds, the service code 39 is displayed.
The data is sent through the CAN communication line.
The service code 39 is detected with the meter unit.
When the user mode, this communication error blinks the following items besides the FI warning symbol [A].
Power Mode and S-KTRC Symbols [B] Yellow Color LED [C]

If the CAN communication line resistance is normal, check the wiring according following procedure.
Disconnect the ECU and meter unit connectors.
Special Tool - Hand Tester: 57001-1394
Wiring Inspection ECU Connector [A] ←→ Meter Unit Connector [B] GY/BL lead (ECU terminal 27) [C] LB lead (ECU terminal 28) [D]

ECU Communication Line Circuit

1. ECU
2. Joint Connector D
3. Joint Connector C
4. Meter Unit
5. Warning Indicator Light (LED, Yellow)
6. Warning Indicator Light (LED, Red)
Blank Key Detection (Service Code 36, Equipped Models)Throttle Body Assy Holder Installation
Be sure to install the new O-rings [A].
Using a high flash-point solvent, clean off any oil or dirt
that may be on the silicone sealant coating area. Dry
them with a clean cloth.
Apply silicone sealant to any two positions of the new O
-ring.
Sealant - Liquid Gasket, TB1211F: 92104-0 ...
Special Tools
Inside Circlip Pliers:
57001-143
Oil Seal & Bearing Remover:
57001-1058
Bearing Driver Set:
57001-1129
Jack:
57001-1238
Bearing Remover Head, 15 ×
17:
57001-1267
Fork Oil Level Gauge:
57001-1290
Bearing Remover Shaft, 13:
57001-1377
Fork Oil Seal Driver, 43:
57001-15 ...
Air Suction Valve Inspection
Remove the air suction valve (see Air Suction Valve Removal).
Visually inspect the reeds [A] for cracks, folds, warps,
heat damage or other damage.
If there is any doubt as to the condition of the reeds, replace
the air suction valve as an assembly.
Check the reed contact areas [B] of ...