Toyota RAV4 (XA40) 2013-2018 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:
On-vehicle inspection
Check fan and generator v belt
Visually check the drive belt for excessive wear,
frayed cords, etc.
If any defect has been found, replace the drive belt.
Hint:
Cracks on the rib side of a drive belt are considered
acceptable.
If the drive belt has chunks missing from the r ...
Rear upper control arm
Components
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
Disconnect skid control sensor wire (for
2wd) (see page bc-198)
Disconnect rear speed sensor lh (for 4wd)
(see page bc-205)
Rem ...
Power seat switch
Inspection
Inspect front power seat switch
Measure the resistance between the terminals when
each switch is operated.
Standard resistance
Slide switch
Front vertical switch
Lifter switch
Reclining switch
If the result is not as specified, replace the switch. ...
