Error Code: Ec-4; Electromagnetic Relief Solenoid Drive Circuit Abnormality - Toyota 8FGU15 Repair Manual

8 TROUBLESHOOTING

Error Code: EC-4

Failure mode: Electromagnetic relief solenoid drive circuit abnormality
Probable cause
▪ Connector contact defect
▪ Harness defect
▪ Electromagnetic relief solenoid defect
▪ SAS/OPS ECU defect
Related portion
SAS/OPS
ECU
STEP1
Judgment
Result
Error
No error
A21
6 (RSO+)
7 (RSO-)
1. Disconnect the battery negative terminal.
2. After inspecting and correcting disconnection and water
3. Turn the ignition key switch ON (start the engine) and check
Go to STEP2 [page 196]..
Connector contact defect
entry of A21 and A102, reconnect all connectors and the
battery negative terminal.
whether or not there is an error.
Procedure
8-201
A102
1 (B)
Electromagnetic
2 (E)
relief solenoid
8