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-662108-S05424299862014101300000) , Registration Body Integrated Unit. >
- Make sure that the User Customizing of the body integrated unit matches the vehicle equipment. < Ref. to «OPERATION»(ref-662108-S05983590122014101300000) , User Customizing. >
- Confirm "Factory initial 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 B1100 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 B1100 current malfunction? | Replace the body integrated unit. < Ref. to REMOVAL , Body Integrated Unit. > | Temporary EEPROM access error occurred. |
DTC PROCEDURE
- Voltage malfunction caused by poor contact of battery power supply control circuit
- Battery voltage of body integrated unit is not within the 8.5 - 16.5 V range.
Functions of body integrated unit stop.
Note. When B1102 BATT P/SUPPLY MALFUNCTION BACKUP is output at the same time, all the function of body integrated unit may not operate.
Voltage malfunction caused by poor contact of battery power supply backup circuits
Illuminations for the keyless entry, map light, luggage light, trunk light, room light, and ignition switch do not turn on.
Note. When B1101 BATT P/SUPPLY MALFUNCTION CONT. is output at the same time, all function of body integrated unit may not operate.
Voltage malfunction caused by poor contact of IGN power supply circuits
Symptoms such as shift lock or wiper not operating may occur.
Voltage malfunction caused by poor contact of ACC power supply circuit
DRL may not illuminate.
Ground short of key interlock circuit
Key interlock does not keep lock condition.
Open or power supply-output short, GND-output short in shift lock circuit.
Shift lock does not be released or remain locked.
UART between the keyless control module or TPMS Control Module and body integrated unit is open or shorted, or has communication failure.
- Door lock does not operate with keyless.
- TPMS does not operate. (The indicator blinks.)
Using the Subaru Select Monitor, read DTC, or check the following data on the current data display to make judgments.
| Item | 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. | |
| 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. | |
| Auto light | When the area around the light control sensor is darkened after the ignition switch and the lighting switch (AUTO) are turned to ON, the clearance light and the low beam illuminate after 15 seconds. Indicator in the combination meter illuminates at the same time. | System is normal. | Check the lighting system, combination system and LAN system. | |
| When the ignition switch and the lighting switch (AUTO) are turned to ON after the area around the light control sensor is darkened, the clearance light and the low beam illuminate immediately. Indicator in the combination meter illuminates at the same time. | ||||
| 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. |
| DRL | After starting the engine and releasing the parking brake, the DRL illuminates. | System is normal. | Check the lighting system and LAN system. | |
| 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. Key can be removed in other than P range. | System is normal. | Check the body control system. | |
| Shift lock | The select lever can be moved from the P range to other ranges only when the brake pedal is depressed with IG ON. | 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. | |
| 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. |