Subaru Crosstrek Service Manual: Dtc p081a starter disable circuit low
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC P081A STARTER DISABLE CIRCUIT LOW
DTC detecting condition:
Immediately at fault recognition
Trouble symptom:
Failure of engine to start
CAUTION:
After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION">
, and Inspection Mode Inspection Mode > PROCEDURE">.
Wiring diagram:
Engine electrical system Engine Electrical System">
| STEP | CHECK | YES | NO |
1.CHECK HARNESS BETWEEN STARTER RELAY (PUSH BUTTON START) CONNECTOR AND STARTER CUT RELAY CONNECTOR.
1) Turn the ignition to OFF.
2) Remove the starter relay (push button start).
3) Remove the starter cut relay.
4) Measure the resistance of harness between starter relay (push button start) connector and starter cut relay connector.
Connector & terminal
(B225) No. 28 — (B225) No. 42:
Is the resistance less than 1 ??
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P081A STARTER DISABLE CIRCUIT LOW">Go to Step 2.
Repair the open circuit in harness between starter relay (push button start) connector and starter cut relay connector.
2.CHECK HARNESS BETWEEN ECM AND STARTER CUT RELAY CONNECTOR.
1) Disconnect the connector from ECM.
2) Measure the resistance of harness between ECM connector and starter cut relay connector.
Connector & terminal
(B135) No. 34 — (B225) No. 40:
Is the resistance less than 1 ??
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P081A STARTER DISABLE CIRCUIT LOW">Go to Step 3.
Repair the open circuit of harness between ECM connector and starter cut relay connector.
3.CHECK STARTER CUT RELAY.
1) Connect the battery to starter cut relay terminals No. 40 and No. 42.
2) Measure the resistance between starter cut relay terminals.
Terminals
No. 41 — No. 44:
Is the resistance 1 M? or more?
Repair the poor contact of ECM connector.
Replace the starter cut relay. Starter Cut Relay">
1. OUTLINE OF DIAGNOSIS
Detect abnormal continuity in the starter cut relay.
Judge as NG when the starter cut relay output line is open.
2. EXECUTION CONDITION
Secondary Parameters | Execution condition |
Battery voltage | ≥ 8 V |
Engine speed | Increase from 0 rpm to 500 rpm or more |
Vehicle speed | < 1 km/h (0.6 MPH) |
Starter cut relay command | OFF |
3. GENERAL DRIVING CYCLE
Perform the diagnosis only once after the enable conditions have been established.
4. DIAGNOSTIC METHOD
Judge as NG when the following conditions are established.
Malfunction Criteria | Threshold Value |
Starter cut relay control voltage that exceeds battery voltage ? 0.34 | Not detected |
Time Needed for Diagnosis: Less than 1 second
Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
Dtc p0700 transmission control system (mil request)
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P0700 TRANSMISSION CONTROL SYSTEM (MIL REQUEST)NOTE:For the diagnostic procedure, refer to CVT section. Basi ...
Dtc p1160 throttle return spring
ENGINE (DIAGNOSTICS)(H4DO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC P1160 THROTTLE RETURN SPRINGNOTE:For the diagnostic procedure, refer to DTC P2101. Diagnostic Procedure with ...
Other materials:
Temperature A, B, C
The temperature grades are A (the
highest), B, and C, representing the
tire's resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled conditions
on a specified indoor laboratory
test wheel. Sustained high
temperature can cause the material
of the t ...
Adjustment
CONTINUOUSLY VARIABLE TRANSMISSION(TR580) > Transmission CaseADJUSTMENTNOTE:When replacing the transmission case with a new part, perform the following check and adjustment for the selection.• Select the transfer driven gear shim. Transfer Clutch > ADJUSTMENT">• Select the ...
Operation
INSTRUMENTATION/DRIVER INFO > Combination Meter SystemOPERATION1. SELF-DIAGNOSIS DISPLAY MODEThe self-diagnosis (checking of each meter, warning light, indicator light, illumination, LCD/TFT) of combination meter can be performed in the following procedure.1. ProcedureCAUTION:Perform the steps de ...
