Kawasaki Ninja Service Manual: ECU Communication Error (Service Code 39)

Kawasaki Ninja Service Manual / Self-Diagnosis System / ECU Communication Error (Service Code 39)

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]

ECU Communication Line Inspection


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 Inspection


ECU Communication Line Circuit

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)
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Fuel Pump Relay (Service Code 46)
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Other materials:

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Remove the front fork (see Front Fork Removal (Each Fork Leg)). Turn the spring preload adjuster fully counterclockwise for removing the piston rod assy easily. Hold the inner tube lower end in a vise. Using the wrench [A], unscrew the top plug [B] out of the outer tube. Special Too ...

Alternator Cover Installation
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 the alternator lead grommet and crankcase halves mating surface [A] on the front and rear sides of the cover mount. Sea ...

Flap and Rear Fender Rear Installation
Installation is the reverse of removal. Note the following. Fit the tab [A] to the slot [B]. Run the seat lock cable [C] between the tool kit case and the turn signal light as shown in the figure. When installing the dampers [A] on the lower pipe [B], install it as shown in the figure. ...