Toyota RAV4 Service Manual: Battery current sensor circuit
Description
The battery current sensor installed on the positive (+) battery terminal detects the amount of current supplied from the generator.
The battery current sensor changes current to voltage (at the positive (+) battery terminal) and sends it to the ecm. The ecm controls the voltage of the generator based on the signals from the battery current sensor.
Wiring diagram
Inspection procedure
Hint:
- If different dtcs that are related to a different system are output simultaneously while terminal e2 is used as a ground terminal, terminal e2 may be open.
- Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
- Inspect battery current sensor assembly
- Disconnect the b29 battery current sensor connector.
- Measure the resistance of the battery current sensor.
Standard resistance 
Hint:
The resistance differs according to the tester type.
- Check harness and connector (battery current sensor - ecm)
- Disconnect the b29 battery current sensor connector.
- Disconnect the b30 ecm connectors.
- Measure the resistance of the wire harness side connectors.
Standard resistance (check for open)
Standard resistance (check for short)
Brake switch "b" circuit high
Description
The purpose of this circuit is to prevent the engine from stalling while
driving in the lock-up condition when
the brakes are suddenly applied.
When the brake pedal is depressed ...
Deterioration of battery
Description
The ecm determines the battery power according to the voltage of the batt
terminal while the engine is
running (not cranking).
Inspection procedure
Inspect battery
Inspe ...
Other materials:
Reassembly
Install evaporator temperature sensor
Notice:
If reusing the evaporator, do not insert the sensor to
a location where the sensor was previously inserted.
Insert the sensor within range c shown in the
illustration.
Install the evaporator temperature sensor as shown
in the illustrati ...
Removal
Hint:
Use the same procedures for the rh side and lh side.
The procedures listed below are for the lh side.
Remove rear wheel
Remove rear stabilizer link assembly lh
Remove the nut and disconnect the link from the
suspension no. 2 Arm.
Remove the nut and link from the sta ...
Opening the back door from outside the vehicle
Back door opener
Vehicles without a power
back door
Raise the back door while
pressing up the back door
opener switch.
Vehicles with a power back
door
When the back door is
unlocked: press the back door
opener switch.
When the back door is locked
(vehicles with a smart key ...