P1243/3: Failure B With Csd Solenoid Valve - Yanmar 3TNV82A Troubleshooting Manual

FAILURE DIAGNOSIS

(2) P1243/3: Failure B with CSD solenoid valve

DTC P1243/3
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 CSD
solenoid valve turning OFF signal during the command to turn ON the CSD
solenoid valve.
3. One flash followed by four 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 CSD solenoid valve wiring may be short-circuited with GND (*NOTE).
•
• The CSD solenoid valve may be faulty.
Inner wiring short-circuited with GND (*NOTE).
•
*NOTE) If the CSD solenoid valve wire is short-circuited with GND, the E-ECU's power supply line fuse 10A
might be blown.Also the E-ECU internal circuitry may be faulty.In this case, the E-ECU may fail to
detect/indicate the error, and to store the error history.
• The E-ECU internal circuitry may be faulty.
1-80
DTCs (Diagnostic Trouble Codes) General Description
Failure B with CSD Solenoid Valve
Check points
Connector
Harness
CSD solenoid valve
E-ECU
TNV DI Service Manual