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)
Ignition Key Inspection Register the ignition key correctly (see Key Registration in the Electrical System chapter). If the service code 36 appears again, the transponder in the key is malfu ...

Fuel Pump Relay (Service Code 46)
...

Other materials:

Special Tools and Sealant
Oil Pressure Gauge, 10 kgf/cm²: 57001-164 Oil Pressure Gauge Adapter, PT3/8: 57001-1233 Outside Circlip Pliers: 57001-144 Liquid Gasket, TB1211: 56019-120 ...

Lights and Switches Operation Inspection
First Step Set the gear position in the neutral position. Turn the ignition switch to ON. The following lights should go on according to below table. If the following light does not go on, inspect the meter unit (see Meter Unit Inspection in the Electrical System chapter). ...

Mode-switching
Depress the S-KTRC button on the left handlebar switch to change the mode. The mode can be changed only when the throttle grip is closed completely. The S-KTRC OFF can be selected only when the motorcycle is at a stop. Changing to mode 1 from S-KTRC OFF is possible while riding. NOTE ...