U0167/12: Immobilizer Error (Can Communication) - Yanmar 3TNV82A Troubleshooting Manual

FAILURE DIAGNOSIS
Immobilizer

(1) U0167/12: Immobilizer Error (CAN communication)

DTC U0167/12
DTC Detecting Conditions
1 - Precondition; 2 - Detecting condition(s); 3 - Flashing pattern of failure indicator
1. Key switch ON.
2. If the immobilizer does not respond to a request of authorization start.
3. Four flashes followed by two flashes
Movement at Error occurrence
Error Mode [Run As Is]:
Authorization by the emergency pulse
communication
Run restricted? -
(As same as the movement at the
immobilizer pulse communication error)
Recovery -
Conditions (As same as the movement at the
immobilizer pulse communication error)
Remarks
Estimation of Failure cause/Error condition
• Battery voltage descent
• The connector may not be properly connected.
• Wiring defect of the harness
CAN communication line (Hi, Low) may be disconnected, or short-circuited with GND or power supply.
•
• The E-ECU internal circuitry may be faulty.
1-128
DTCs (Diagnostic Trouble Codes) General Description
Immobilizer Error (CAN communication)
Immobilizer pulse communication setting
Yes
Immobilizer
Battery
Connector
Harness
E-ECU
No
[Stop Immediately]:
The engine does not start up.
Yes: The rack actuator relay is turned
OFF, and the starter does not rotate.
No.
TNV DI Service Manual
Check points