P1102
BO: DTC P1102 - PRESSURE SOURCES SWITCHING SOLENOID VALVE CIRCUIT LOW INPUTDTC DETECTING CONDITION:
- Two consecutive driving cycles with fault
TROUBLE SYMPTOM:
- Erroneous idling
- Failure of engine to start
CAUTION: After repair or replacement of faulty parts, conduct CLEAR MEMORY and INSPECTION MODE. Clearing Diagnostic Trouble Codes
WIRING DIAGRAM
10B0O1: CHECK OUTPUT SIGNAL FROM ECM.
1) Turn ignition switch to ON.
Connector (B134) No.9 (+) - Chassis Ground (-):
2) Measure voltage between ECM and chassis ground.
CHECK: Is the voltage more than 10 V?
YES: Go to step 10BO2.
NO: Go to step 10BO3.
10BO2: CHECK POOR CONTACT.
Check poor contact in ECM connector.
CHECK: Is there poor contact in ECM connector?
YES: Repair poor contact in ECM connector.
NO: Contact with Subaru of America (SOA) service.
NOTE:
Inspection by Subaru of America's DTM is required, because probable cause is deterioration of multiple parts.
10BO3: CHECK HARNESS BETWEEN ECM AND PRESSURE SOURCES SWITCHING SOLENOID VALVE CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from pressure sources switching solenoid valve and ECM.
Connector (E27) No.1 (+) - Engine Ground:
3) Measure resistance of harness between pressure sources switching solenoid valve connector and engine ground.
CHECK: Is the resistance less than 10 Ohms?
YES: Repair ground short circuit in harness between ECM and pressure sources switching solenoid valve connector.
NO: Go to step 10BO4.
10BO4: CHECK HARNESS BETWEEN ECM AND PRESSURE SOURCES SWITCHING SOLENOID VALVE CONNECTOR.
Connector & Terminal (B134) No.9 (+) - (E27) No.1:
Measure resistance of harness between ECM and pressure sources switching solenoid valve connector.
CHECK: Is the resistance less than 1 Ohm?
YES: Go to step 10BO5.
NO: Repair open circuit in harness between ECM and pressure sources switching solenoid valve connector.
10BO5: CHECK PRESSURE SOURCES SWITCHING SOLENOID VALVE.
Terminals No.1 - No.2:
Measure resistance between pressure sources switching solenoid valve connector terminals.
CHECK: Is the resistance between 10 and 100 Ohms?
YES: Go to step 10BO6.
NO: Replace pressure sources switching solenoid valve.
10B06: CHECK POWER SUPPLY TO PRESSURE SOURCES SWITCHING SOLENOID VALVE.
1) Turn ignition switch to ON.
Connector & Terminal (E27) No.2 (+) - Engine Ground (-):
2) Measure voltage between pressure sources switching solenoid valve harness connector and engine ground.
CHECK: Is the voltage more than 10 V?
YES: Go to step 10BO7.
NO: Repair open circuit in harness between main relay and pressure sources switching solenoid valve connector.
10BO7: CHECK POOR CONTACT
Check poor contact in pressure sources switching solenoid valve connector.
CHECK: Is there poor contact in pressure sources switching solenoid valve connector?
YES: Repair poor contact in pressure sources switching solenoid valve connector.
NO: Contact with Subaru of America (SOA) service.
NOTE:
Inspection by Subaru of America's DTM is required, because probable cause is deterioration of multiple parts.