PROCEDURE
Note. For diagnosis of model with keyless access, refer to BASIC DIAGNOSTIC PROCEDURE .
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK SECURITY INDICATOR LIGHT. Turn the ignition switch to "OFF" or "ACC". Wait at least 60 seconds. | Does the security indicator light blink? | Go to step 2 . | Check the security indicator light circuit. Refer to CHECK SECURITY INDICATOR LIGHT CIRCUIT . |
| 2 CHECK KEY SWITCH. Remove the key from ignition switch. | Does the security indicator light begin to blink within 1 second after the key is removed? | Go to step 3 . | Check the key switch circuit. Refer to CHECK KEY SWITCH CIRCUIT . |
| 3 CHECK SECURITY INDICATOR LIGHT. Turn the ignition switch to ON. | Does the security indicator light go off? | Go to step 5 . | Go to step 4 . |
| 4 CHECK ENGINE START. Turn the ignition switch to START. | Does the starter operate? | Check the LAN communication system. Refer to BASIC DIAGNOSTIC PROCEDURE . | Go to step 7 . |
| 5 CHECK ENGINE START. Turn the ignition switch to START. | Does the starter operate? | Go to step 6 . | Check the LAN communication system. Refer to BASIC DIAGNOSTIC PROCEDURE . |
| 6 CHECK ENGINE START. Turn the ignition switch to START. | Does the engine start? | Immobilizer system is normal. | Go to step 8 . |
| 7 CHECK DTC. Read the DTC of body integrated unit using Subaru Select Monitor. Refer to SUBARU SELECT MONITOR . | Is the DTC displayed on screen? | Go to step 10 . | Replace the body integrated unit. Refer to BODY INTEGRATED UNIT . Register all ignition keys (transponders). Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER". |
| 8 CHECK DTC. Read the DTC relating the ECM using the Subaru Select Monitor. Refer to SUBARU SELECT MONITOR . | Is the DTC displayed on screen? | Go to step 9 . | Perform the diagnosis for engine system. Refer to PROCEDURE . |
| 9 CHECK FREEZE FRAME DATA. Using the Subaru Select Monitor, check the Freeze Frame Data. | Was the Freeze Frame Data recorded? | Record the data. Go to step 10 . | Go to step 10 . |
| 10 PERFORM DIAGNOSIS. Inspect using the "Diagnostic Procedure with Diagnostic Trouble Code (DTC)". Refer to DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC) . Repair the trouble cause. Perform the Clear Memory Mode. Read DTCs again. | Is the DTC displayed on screen? | Inspect using the "Diagnostic Procedure with Diagnostic Trouble Code (DTC)". Refer to DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC) . | Finish the diagnosis. |
Scheme 48
Scheme 49
Scheme 50
GENERAL TOOL
| TOOL NAME | REMARKS |
|---|---|
| Circuit tester | Used for measuring resistance, voltage and current. |
Scheme 51
See appropriate SYSTEM WIRING DIAGRAM article.
HOW TO USE THE SUBARU SELECT MONITOR
For the operation procedure, refer to the "Subaru Select Monitor"operating information.
COMMUNICATION LINE CHECK
The communication line between ECM and body integrated unit can be checked in "System Operation Check Mode". This is referred to as "Communication line check".
For operation procedures, refer to the "Subaru Select Monitor" operating information.
Note. If a problem is detected, repair the trouble cause. Refer to DTC B1572 IMM CIRCUIT FAILURE (EXCEPT ANTENNA CIRCUIT) .
ECM
For the operation procedure, refer to the "Subaru Select Monitor" operating information.
Note. For detailed concerning DTC, refer to LIST .
BODY INTEGRATED UNIT
For the operation procedure, refer to the "Subaru Select Monitor" operating information.
Note. For detailed concerning DTC, refer to LIST .
For the operation procedure, refer to the "Subaru Select Monitor" operating information.
Note. Initial diagnosis of electronic throttle control is performed after memory clearance. Wait for 10 seconds or more after turning the ignition switch to ON, and then start the engine.
For the operation procedure, refer to the "Subaru Select Monitor" operating information.
| DTC | Item | Contents of diagnosis | Index No. |
|---|---|---|---|
| B1570 | Antenna | Faulty antenna | Refer to DTC B1570 ANTENNA . |
| B1571 | Reference Code Incompatibility | Reference code incompatibility between body integrated unit and ECM | Refer to DTC B1571 REFERENCE CODE INCOMPATIBILITY . |
| B1572 | IMM Circuit Failure (Except Antenna Circuit) | Communication failure between body integrated unit and ECM | Refer to DTC B1572 IMM CIRCUIT FAILURE (EXCEPT ANTENNA CIRCUIT) . |
| B1574 | Key Communication Failure | Communication failure between key and body integrated unit | Refer to DTC B1574 KEY COMMUNICATION FAILURE . |
| B1575 | Incorrect Immobilizer Key | Incorrect immobilizer key (Use of unregistered key in body integrated unit) | Refer to DTC B1575 INCORRECT IMMOBILIZER KEY . |
| B1576 | EGI Control Module EEPROM | ECM malfunctioning | Refer to DTC B1576 EGI CONTROL MODULE EEPROM . |
| B1577 | IMM Control Module EEPROM | Body integrated unit malfunctioning | Refer to DTC B1577 IMM CONTROL MODULE EEPROM . |
| B1578 | Meter Failure (Except for model for Canada) | Reference code incompatibility between combination meter and body integrated unit Communication failure between body integrated unit and ECM | Refer to DTC B1578 METER FAILURE . |
| Meter Failure (Model for Canada) | Reference code incompatibility between body integrated unit and security control module Communication failure between body integrated unit and ECM | ||
| P0513 | Incorrect Immobilizer Key | Incorrect immobilizer key (Use of unregistered key in body integrated unit) | Refer to DTC P0513 INCORRECT IMMOBILIZER KEY . |
| P1570 | Antenna | Faulty antenna | Refer to DTC P1570 ANTENNA . |
| P1571 | Reference Code Incompatibility | Reference code incompatibility between body integrated unit and ECM | Refer to DTC P1571 REFERENCE CODE INCOMPATIBILITY . |
| P1572 | IMM Circuit Failure (Except Antenna Circuit) | Communication failure between body integrated unit and ECM | Refer to DTC P1572 IMM CIRCUIT FAILURE (EXCEPT ANTENNA CIRCUIT) . |
| P1574 | Key Communication Failure | Communication failure between key and body integrated unit | Refer to DTC P1574 KEY COMMUNICATION FAILURE . |
| P1576 | EGI Control Module EEPROM | ECM malfunctioning | Refer to DTC P1576 EGI CONTROL MODULE EEPROM . |
| P1577 | IMM Control Module EEPROM | Body integrated unit malfunctioning | Refer to DTC P1577 IMM CONTROL MODULE EEPROM . |
| P1578 | Meter Failure (Except for model for Canada) | Reference code incompatibility between combination meter and body integrated unit Communication failure between body integrated unit and ECM | Refer to DTC P1578 METER FAILURE . |
| Meter Failure (Model for Canada) | Reference code incompatibility between body integrated unit and security control module Communication failure between body integrated unit and ECM |
Note. Perform diagnosis of engine DTC when a DTC other than an immobilizer DTC is detected. Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .
| DTC | Item | Contents of diagnosis | Index No. | Relation between ECM and DTC |
|---|---|---|---|---|
| B1401 | M Collation NG | Reference code incompatibility between combination meter and body integrated unit | Refer to DTC B1401 M COLLATION NG . | B1578 P1578 |
| B1402 | Immobilizer Key Collation NG | Incorrect immobilizer key (Use of unregistered key in body integrated unit) Faulty antenna | Refer to DTC B1402 IMMOBILIZER KEY COLLATION NG . | B1575 B1570 P1574 P0513 P1570 P1574 |
| B1405 | SCU Collation NG | Reference code incompatibility between body integrated unit and security control module | Refer to DTC B1405 SCU COLLATION NG . | B1578 P1578 |
| B1406 | SCU_EEPROM_NG | Malfunction of security control module | Refer to DTC B1406 SCU_EEPROM_NG . | B1578 P1578 |
Note. The starter relay control is performed in immobilizer system. When the body integrated unit detects a nonconformity of reference code, it immediately outputs a starter relay cut signal to ECM, and then ECM stops the starter relay operation. In this case, engine does not start, and DTC is not recorded in ECM. Check that the engine does not start on the DTC of body integrated unit.