Subaru Forester 1998-05

2.5L H4 - Std 8

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Trouble Code: P1511



ISC Solenoid Valve Signal No. 1 Circuit Malfunction (high input)

Possible Causes:



Check any other DTC on display
 
Check ground circuit for ECM
 
Check harness between ECM and idle control solenoid valve connector
 

Trouble Code: P1512



ISC Solenoid Valve Signal No. 2 Circuit Malfunction (low input)

Possible Causes:



Check power supply to idle air control solenoid valve
 
Check harness between ECM and idle control solenoid valve connector
 
Check poor contact
 

Trouble Code: P1513



ISC Solenoid Valve Signal No. 2 Circuit Malfunction (high input)

Possible Causes:



Check any other DTC on display
 
Check ground circuit for ECM
 
Check harness between ECM and idle control solenoid valve connector
 

Trouble Code: P1514



ISC Solenoid Valve Signal No. 3 Circuit Malfunction (low input)

Possible Causes:



Check power supply to idle air control solenoid valve
 
Check harness between ECM and idle control solenoid valve connector
 
Check poor contact
 

Trouble Code: P1515



ISC Solenoid Valve Signal No. 3 Circuit Malfunction (high input)

Possible Causes:



Check any other DTC on display
 
Check ground circuit for ECM
 
Check harness between ECM and idle control solenoid valve connector
 

Trouble Code: P1516



ISC Solenoid Valve Signal No. 4 Circuit Malfunction (low input)

Possible Causes:



Check power supply to idle air control solenoid valve
 
Check harness between ECM and idle control solenoid valve connector
 
Check poor contact
 

Trouble Code: P1517



ISC Solenoid Valve Signal No. 4 Circuit Malfunction (high input)

Possible Causes:



Check any other DTC on display
 
Check ground circuit for ECM
 
Check harness between ECM and idle control solenoid valve connector
 

Trouble Code: P1702



Automatic Transmission diagnosis Input Signal Circuit Malfunction

Possible Causes:



Check harness between TCM and CCM
 

Trouble Code: P1711



Engine Torque Control Signal No. 1 Circuit Malfunction

Possible Causes:



Check input signal for ECM
 
Check poor contact
 
Check harness between ECM and TCM connector
 

Trouble Code: P1712



Engine Torque Control Signal No. 2 Circuit Malfunction

Possible Causes:



Check input signal for ECM
 
Check poor contact
 
Check harness between ECM and TCM connector
 

 
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