Start Assist Relay; P1232/4: Failure A With Start Assist Relay - Yanmar 3TNV82A Troubleshooting Manual

FAILURE DIAGNOSIS

Start Assist Relay

(1) P1232/4: Failure A with Start Assist Relay

DTC P1232/4
DTC Detecting Conditions
1 - Precondition; 2 - Detecting condition(s); 3 - Flashing pattern of failure indicator
1. Key switch ON.
2. Make an assessment logically as to followings.E-ECU detects the start assist
relay turning ON during the command to turn OFF the start assist relay.
3. One flash followed by five flashes.
Movement at Error occurrence
Error Mode [Run As Is]:
After detecting the error, the system lets the engine continue to run without any
restrictions.
Run restricted? No.
Recovery No.
Conditions
Remarks
Estimation of Failure cause/Error condition
• The connector may not be properly connected.
• Wiring defect of the harness
The start assist relay wiring may be disconnected or short-circuited with POWER SUPPLY.
•
• The start assist relay may be faulty.
Disconnection of Start Assist Relay inner wiring
•
• The E-ECU internal circuitry may be faulty.
1-72
DTCs (Diagnostic Trouble Codes) General Description
Failure A with Start Assist Relay
Check points
Connector
Harness
Start Assist Relay
E-ECU
TNV DI Service Manual