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:

Backups
The ECU takes the following measures to prevent engine damage when the DFI, ignition, S-KTRC or immobilizer system parts have troubles. Note: (1): D-J Method: When the engine load is light like at idling or low speed, the ECU determines the injection quantity by calculating fr ...

Valve Clearance Inspection
NOTE Valve clearance must be checked and adjusted when the engine is cold (at room temperature). Remove: Crankshaft Sensor Cover (see Crankshaft Sensor Removal in the Electrical System chapter) Cylinder Head Cover (see Cylinder Head Cover Removal in the Engine Top End chapter) Turn t ...

Brake Light Switch Operation Inspection
Turn the ignition switch to ON. The brake light (LED) [A] should go on when the brake lever is applied or after the brake pedal is depressed about 10 mm (0.39 in.). If it does not, adjust the brake light switch. Remove the front footpeg bracket (see Brake Pedal Removal in the B ...