FAILURE DIAGNOSIS
1-74
TNV DI Service Manual
DTCs (Diagnostic Trouble Codes) General Description
(2) P1233/3: Failure B with Start Assist Relay
DTC Detecting Conditions
Movement at Error occurrence
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 short-circuited with GND (*NOTE).
• The start assist relay may be faulty.
•
Inner wiring of the start assist relaymay be short-circuited with GND (*NOTE).
*NOTE) If the start assist relay 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.
DTC
P1233/3
Failure B with Start Assist Relay
1 - Precondition; 2 - Detecting condition(s); 3 - Flashing pattern of failure indicator
Check points
1. Key switch ON.
2. Make an assessment logically as to followings.E-ECU detects the start assist
relay turning OFF during the command to turn ON the start assist relay.
3. One flash followed by five flashes.
Connector
Harness
Start Assist Relay
E-ECU
Error Mode
[Run As Is]:
After detecting the error, the system lets the engine continue to run without any
restrictions.
Run restricted?
No.
Recovery
Conditions
No.
Remarks
TNV_DI_SM_A4-Troubleshooting.book 74 ページ ２００７年１１月１５日 木曜日 午後５時２７分
