Manual Transaxle
DTC P1101 - NEUTRAL POSITION SWITCH CIRCUIT LOW INPUTDTC DETECTING CONDITION:
- Two consecutive driving cycles with fault
TROUBLE SYMPTOM:
- Erroneous idling
CAUTION: After repair or replacement of faulty parts, conduct CLEAR MEMORY MODE and INSPECTION MODE. Refer to How To Clear Diagnostic Trouble Codes.
Wiring Diagram:
WIRING DIAGRAM
10BO1: CHECK INPUT SIGNAL FOR ECM.
1. Turn ignition switch to ON.
Connector & Terminal - [(B135) No.26 (+) - Chassis ground (-)]:
2. Measure voltage between ECM and chassis ground.
CHECK: Is the voltage more than 10 V in neutral position?
YES: Go to step 10BO2.
NO: Go to step 10BO4.
10BO2: CHECK INPUT SIGNAL FOR ECM.
Connector & Terminal - [(B135) No.26 (+) - Chassis ground (-)]:
Measure voltage between ECM and chassis ground.
CHECK: Is the voltage less than 1 V in other positions?
YES: Go to step 10BO3.
NO: Go to step 10BO4.
10BO3: 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.
10BO4: CHECK NEUTRAL POSITION SWITCH.
1. Turn ignition switch to OFF.
2. Disconnect connector from transmission harness.
Connector & Terminal - [(T2) No.1 - No.2]:
3. Measure resistance between transmission harness and connector terminals.
CHECK: Is the resistance more than 1 Ohms in neutral position?
YES: Go to step 10BO5.
NO: Repair short circuit in transmission harness or replace neutral position switch.
10BO5: CHECK HARNESS BETWEEN ECM AND NEUTRAL POSITION SWITCH CONNECTOR.
Connector & Terminal - [(B135) No.26 - Chassis Ground]:
Measure resistance between ECM and chassis ground.
CHECK: Is the resistance less than 10 Ohms?
YES: Repair ground short circuit in harness between ECM and transmission harness connector.
NO: Go to step 10BO6.
10BO6: CHECK POOR CONTACT.
Check poor contact in transmission harness connector.
CHECK: Is there poor contact in transmission harness connector?
YES: Repair poor contact in transmission harness 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.