U1167/8: Immobilizer Error (Pulse Communication) - Yanmar 3TNV82A Troubleshooting Manual

FAILURE DIAGNOSIS

(2) U1167/8: Immobilizer Error (pulse communication)

DTC U1167/8
DTC Detecting Conditions
1 - Precondition; 2 - Detecting condition(s); 3 - Flashing pattern of failure indicator
1. Key switch ON.
2. In the case of timeout detection
3. Four flashes followed by two flashes
Movement at Error occurrence
Error Mode [Run As Is]:
Engine start is authorized.
Run restricted? No.
Recovery Yes: The error is automatically reset
Conditions
Remarks
Estimation of Failure cause/Error condition
• The connector may not be properly connected.
• Wiring defect of the harness
Pulse communication line may be disconnected, or short-circuited with GND or power supply.
•
• The E-ECU internal circuitry may be faulty.
1-130
DTCs (Diagnostic Trouble Codes) General Description
Immobilizer CAN communication
Normal
when a normal data is received.
Immobilizer Error (pulse communication)
[Stop Immediately]:
The engine does not start up.
Yes:The rack actuator relay is turned
OFF, and the starter does not rotate.
Yes: The error is automatically reset
when a normal data is received.
TNV DI Service Manual
Check points
Immobilizer
Connector
Harness
E-ECU
Error