INSPECTION
Before performing diagnosis, check the following items which might affect body control system problems.
- Measure the battery voltage and check electrolyte. Standard voltage: 12 V or more Specific gravity: 1.260 or more
- Check the fuse condition. Make sure that ampere of the fuse is setting value, and it is not blown out.
- Check the connecting condition of harness and harness connector.
- Confirm settings of body integrated unit are corresponded to vehicle equipment. Ref. to «OPERATION»(ref-371881-S05166078522010091900000) , Registration Body Integrated Unit.
- Make sure that the User Customizing of the body integrated unit matches the vehicle equipment. Ref. to «OPERATION»(ref-371881-S37329733992010091900000) , User Customizing.
- Confirm "Factory or Market setting" of body integrated unit registrations is "Market".
- Confirm key illumination does not blink with ignition switch turned to ON.
DTC DETECTING CONDITION
System error in body integrated unit
TROUBLE SYMPTOM
LAN communication immobilizer function may not be executed normally.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Check DTC indicated by body integrated unit. | Is the DTC B1100 displayed current malfunction? | Go to step 2 . | Temporary EEPROM access error occurred. |
| 2 CHECK CONNECTOR. Turn the ignition switch to OFF. Disconnect the body integrated unit connector. Connect the disconnected connectors. Read the DTC of body integrated unit using Subaru Select Monitor. | Is the DTC B1100 displayed current malfunction? | Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit. | Temporary EEPROM access error occurred. |
DIAGNOSTIC PROCEDURE
Battery power supply control circuit is open or shorted.
Functions of body integrated unit stop.
Note. When B1102 BATT p/supply (backup) malfunction is output at the same time, all the function of body integrated unit may not operate.
Scheme 1
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Read the DTC of body integrated unit using Subaru Select Monitor. | Is B1101 a current malfunction? | Go to step 2 . | Go to step 5 . |
| 2 CHECK DTC. Turn the ignition switch to OFF. Disconnect and then connect the body integrated unit connector. Wait approx. 2 minutes. Turn the ignition switch to ON. Read the DTC of body integrated unit using Subaru Select Monitor. | Is B1101 a current malfunction? | Go to step 3 . | Go to step 5 . |
| 3 CHECK FUSE. Turn the ignition switch to OFF. Inspect the fuse. | Is the fuse OK? | Go to step 4 . | Replace the defective fuse. |
| 4 CHECK HARNESS. Disconnect the body integrated unit connector. Using the tester, measure the voltage between terminals. Connector & terminal (i84) No. 6 (+) - Chassis ground (-) | Is the voltage 8.5 - 16 V? | Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit. | Repair the harness between body integrated unit and fuse. |
| 5 CHECK CONNECTOR. Turn the ignition switch to OFF. Disconnect the body integrated unit connector. | Is there poor contact of connector? | Repair or replace the poor contact of connector. | A temporary change of voltage occurred. |
DIAGNOSTIC PROCEDURE
Battery power supply backup circuit is open or shorted.
Does not exist.
Note. When B1101 BATT p/supply (cont.) malfunction are output at the same time, all function of body integrated unit may not operate.
IGN power supply circuit is open or shorted.
Symptoms such as shift lock, reverse lock or wiper not operating may occur.
Scheme 2
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Read the DTC of body integrated unit using Subaru Select Monitor. | Is B1103 a current malfunction? | Go to step 2 . | Go to step 5 . |
| 2 CHECK DTC. Turn the ignition switch to OFF. Disconnect and then connect the body integrated unit connector. Wait approx. 2 minutes. Turn the ignition switch to ON. Read the DTC of body integrated unit using Subaru Select Monitor. | Is B1103 a current malfunction? | Go to step 3 . | Go to step 5 . |
| 3 CHECK FUSE. Turn the ignition switch to OFF. Inspect the fuse. | Is the fuse OK? | Go to step 4 . | Replace the defective fuse. |
| 4 CHECK HARNESS. Disconnect the body integrated unit connector. Using the tester, measure the voltage between terminals. Connector & terminal (i171) No. 17(+) - Chassis ground (-) | Is the voltage 8.5 - 16 V? | Replace the body integrated unit. Ref. to REMOVAL , Body Integrated Unit. | Repair the harness between body integrated unit and fuse. |
| 5 CHECK CONNECTOR. Turn the ignition switch to OFF. Disconnect the body integrated unit connector. | Is there poor contact of connector? | Repair or replace the poor contact of connector. | A temporary change of voltage occurred. |
DIAGNOSTIC PROCEDURE
ACC power supply circuit is open or shorted.
Rear wiper may not operate at ACC position.
Shift lock circuit is shorted to ground.
Shift lock does not be released or remain locked.
Scheme 3
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Turn the ignition switch to ON. Keep the Parking range for approx. 5 seconds. Read the DTC of body integrated unit using Subaru Select Monitor. | Is B1106 a current malfunction? | Go to step 6 . | Go to step 2 . |
| 2 CHECK DTC. Turn the ignition switch to OFF. Disconnect the shift lock solenoid connector. Connect the disconnected connectors. Turn the ignition switch to ON, then keep the Parking range for approx. 5 seconds. Read the DTC of body integrated unit using Subaru Select Monitor. | Is B1106 a current malfunction? | Go to step 3 . | Go to step 7 . |
| 3 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the shift lock solenoid connector. Using the tester, measure the resistance between terminals. Connector & terminal (B116) No. 4 - Chassis ground | Is the resistance less than 10 ohms? | Go to step 4 . | Repair or replace the open circuit of harness. |
| 4 CHECK SHIFT LOCK SOLENOID. Using a tester, measure the resistance between shift lock solenoid terminals. Connector & terminal (B116) No. 4 - No. 3 | Is the resistance less than 27 - 31 ohms? | Go to step 5 . | Replace the shift lock solenoid. Ref. to DISASSEMBLY , Select Lever. |
| 5 CHECK SHIFT LOCK SOLENOID. Connect the battery terminal to shift lock solenoid. Connector & terminal (B116) No. 3 - positive terminal: (B116) No. 4 - ground terminal | Does the shift lock solenoid operate and then release the lock? | Go to step 6 . | Replace the shift lock solenoid. Ref. to DISASSEMBLY , Select Lever. |
| 6 CHECK HARNESS. Use a tester to measure the resistance between harness terminals. Connector & terminal (B116) No. 3 - (B281) No. 5: NOTE: If body integrated unit and shift lock connector are not disconnected, disconnect them first and then perform measurement. | Is the resistance less than 10 ohms | Replace the body integrated unit. Ref. to BODY INTEGRATED UNIT . | Repair or replace the open circuit of harness. |
| 7 CHECK DTC. Depress the brake pedal at the parking range. Read the DTC of body integrated unit using Subaru Select Monitor. | Is B1106 a current malfunction? | Go to step 8 . | Go to step 9 . |
| 8 CHECK DTC. Turn the ignition switch to OFF. Disconnect the body integrated unit connector and shift lock connector. Connect the disconnected connectors. Turn the ignition switch to ON. Depress the brake pedal at the parking range. Read the DTC of body integrated unit using Subaru Select Monitor. | Is B1106 a current malfunction? | Go to step 4 . | Go to step 9 . |
| 9 CHECK CONNECTOR. Turn the ignition switch to OFF. Disconnect the body integrated unit connector and shift lock connector. | Is there poor contact of connector terminal? | Repair or replace the poor contact of terminal. | It is possible that temporary poor contact occurs. |
| NOTE |
|---|
| If body integrated unit and shift lock connector are not disconnected, disconnect them first and then perform measurement. |
DIAGNOSTIC PROCEDURE
UART between keyless control unit and body integrated unit is open or shorted, the connector is not connected properly, or the terminal is crimped improperly.
Door lock does not operate with keyless.
Scheme 4
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. Insert the ignition key to the ignition key cylinder and remove. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1500 a current malfunction? | Go to step 2 . | Go to step 7 . |
| 2 CHECK DTC. Turn the ignition switch to OFF. Disconnect the body integrated unit and keyless entry control module connector. Connect the disconnected connectors. Insert the ignition key to the ignition key cylinder and remove. Read the DTC of body integrated unit using Subaru Select Monitor. | Is U1500 a current malfunction? | Go to step 3 . | Go to step 7 . |
| 3 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the body integrated unit and keyless entry control module connector. Using the tester, measure the resistance between terminals. Connector & terminal (1171) No. 11 - (R345) No. 3 | Is the resistance 10 ohms, or less? | Go to step 4 . | Repair the open circuit of harness or replace harness. |
| 4 CHECK HARNESS. Turn the ignition switch to OFF. Using the tester, measure the voltage between terminals. Connector & terminal (R345) No. 4 (+) - Chassis ground (-) | Is the voltage 10 V or more? | Go to step 5 . | Repair the power supply circuit. |
| 5 CHECK HARNESS. Using the tester, measure the resistance between terminals. Connector & terminal (R345) No. 7 - Chassis ground | Is the resistance 10 ohms or less? | Go to step 6 . | Repair the ground circuit. |
| 6 CHECK CONTROL MODULE. Turn the ignition switch to OFF. Remove the keyless entry control module. Install a keyless entry control module that was operating normally on another vehicle. | Does it operate with the remote control key of another vehicle? | Replace the keyless entry control module. Ref. to REMOVAL , Keyless Entry Control Module. | Replace the body integrated unit. |
| 7 CHECK CONNECTOR. Check for poor contact of connectors used for low-speed CAN. | Is there poor contact of connector? | Repair the connector that has poor contact, or replace harness. | It may be a temporary communication malfunction. Delete the DTC. |
DIAGNOSTIC PROCEDURE
Using the Subaru Select Monitor, read DTC, or check the following data on the current data display to make judgements.
| Contents | Operation | Specifications | Note | |
|---|---|---|---|---|
| YES | NO | |||
| Diagnostic code | DTC is not displayed when inspecting all DTCs. | DTC is not displayed. | Perform the diagnosis according to DTC. | |
| Remaining fuel level | Fuel gauge displays correctly | System is normal. | Check the combination meter system and LAN system. | When "Fuel level resistance" and "Fuel level resistance 2" are different values on current data of the body integrated unit, the body integrated unit may have inner malfunction. |
| Remaining fuel level warning light is not illuminating. | System is normal. | |||
| Clearance light (Low beam) (High beam) | Clearance light and low/high beams illuminate normally when the switch is operated. Indicator in the meter illuminates at the same time. | System is normal. | Check the lighting system, combination meter system and LAN system. | |
| Fog light | Front fog light illuminates when the switch is operated. Indicator in the meter illuminates at the same time. | System is normal. | Check the lighting system, combination meter system and LAN system. | |
| Rear defogger | Rear defogger operates when the switch is operated. The indicator illuminates at the same time. | System is normal. | Check the rear window defogger system and A/C system. | |
| Wiper deicer | Wiper deicer operates when the switch is operated. The indicator illuminates at the same time. When the ambient temperature is 5°C (41°F) or higher, press the switch 3 seconds or more to forcibly activate the system. | System is normal. | Check the wiper deicer system and A/C system. | Wiper deicer operates when "Wiper deicer setting" of the body integrated unit is set to on. |
| Rear wiper | Rear wiper operates when the switch is operated. | System is normal. | Check wiper or washer system. | Depending on user customizing "Sedan/Wagon setting" of the body integrated unit, vehicle sensory time varies. |
| Key interlock | Key cannot be removed in other than P range. | System is normal. | Check the body control system. | |
| Shift Lock | Shift operation is normal. | System is normal. | Check the body control system. | |
| Key warning switch alarm | When the driver's door is open without the key removed, the buzzer sounds. | System is normal. | Check the combination meter and body control system. | |
| Reverse warning | When the lever is shifted to reverse, the buzzer sounds. | System is normal. | Check the combination meter and body control system. | |
| Seat belt warning alarm | With driver's seat belt unfastened, the indicator on the meter illuminates. When the vehicle speed exceeds 20 km/h with the condition, the buzzer sounds. | System is normal. | Check the seat belt system and combination meter LAN system. | |
| Door lock | The doors lock/unlock when the door switch is operated. Rear gate/trunk opens when the rear gate/trunk release switch is operated. | System is normal. | Check the security & lock and body control system. | If user customizing "Sedan/Wagon setting" is different, trunk and rear gate do not open. |
| Keyless entry | The lock locks/unlocks when the keyless transmitter is operated. Trunk/rear gate unlocks when trunk/rear gate unlock button is operated. | System is normal. | Check the keyless entry and body control system. | |
| Answer back | Answer-back operates when the keyless entry locks/unlocks. | System is normal. | Check the security & lock system, and LAN system. | |
| Room light | The light illuminates/goes off according to the door open/close. | System is normal. | Check the room light system, security & lock system, and LAN system. | |
| Map light | The light illuminates/goes off according to the door open/close. (Except for rear gate) | System is normal. | Check the spot map light, security & lock system, and LAN system. | |
| Luggage/trunk light | The light illuminates/goes off according to the rear gate open/close. | System is normal. | Check the luggage/trunk light, security & lock system, and LAN system. | |
| Key illumination | The light illuminates/goes off according to the driver's door open/close. | System is normal. | Check the ignition switch illumination, security & lock, and LAN system. | |
| Illumination control | Illumination volume control is available. | System is normal. | Check the illumination control switch, combination meter, and body control system. | Illumination volume control is not available when user customizing "Illumination Control On/Off" of the body integrated unit is set to off. |
| Engine start | Engine starts. | System is normal. | Check the engine system, immobilizer, and LAN system. | |
| Vehicle security | Security monitoring/security canceling can be performed by operating the keyless entry. | System is normal. | Check the security & lock system, and LAN system. | Security monitoring starts and at the same time the warning buzzer sounds, when impact sensor is not connected and user customizing "Impact Sensor" of the body integrated unit is set to on. |
INSPECTION CHART