42B-B1761 VIN code not programmed

DTC B1761: VIN code not programmed

caution

When DTC No. B1761 is set, be sure to diagnose the CAN bus line.
When replacing the ECU, always check that the communication circuit is normal.

DTC SET CONDITION

KOS-ECU sets DTC B1761 when no VIN is recorded in it.

TECHNICAL DESCRIPTION (COMMENT)

KOS-ECU determines that the abnormality is present when no VIN is recorded in it.

TROUBLESHOOTING HINTS

VIN not programmed
Malfunction of the KOS-ECU

DIAGNOSIS

STEP 1. Using scan tool MB991958, diagnose the CAN bus line.

(1)

caution

To prevent damage to scan tool (MB991958), always turn the power supply mode of the engine switch to the OFF position before connecting or disconnecting scan tool (MB991958).

Connect scan tool MB991958. Refer to "How to connect scan tool (M.U.T.-III)

(2) Turn the power supply mode of the engine switch to ON.

(3) Diagnose the CAN bus line.

(4) Turn the power supply mode of the engine switch to OFF.

Is the CAN bus line found to be normal?

Go to Step 2

Repair the CAN bus line (Refer to GROUP 54C, Diagnosis

STEP 2. Register the VIN and recheck the diagnostic trouble code.

) and recheck if the DTC is set.

(1) Turn the power supply mode of the engine switch from OFF to ON.

(2) Check if DTC is set.

(3) Turn the power supply mode of the engine switch to OFF.

Is the DTC set?

Replace KOS-ECU and register the ID codes (Refer to

The procedure is complete.