Description
The power generation voltage variable control enables fuel consumption to be decreased by reducing the engine load which is caused by the power generation of the generator. The battery current sensor is installed to the battery cable at the negative terminal. The sensor measures the charging/discharging current of the battery.
Based on the sensor signal, ECM judges whether or not the power generation voltage variable control is performed. When performing the power generation voltage variable control, ECM calculates the target power generation voltage based on the sensor signal. And ECM sends the calculated value as the power generation command value to IPDM E/R. For the details of the power generation voltage variable control, refer to CHG-8, "System Description".
CAUTION: Never connect the electrical component or the ground wire directly to the battery terminal. The connection causes the malfunction of the power generation voltage variable control, and then the battery discharge may occur.
DTC Logic
DTC DETECTION LOGIC
NOTE: If DTC P1554 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to EC-394, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to EC-423, "Component Function Check".
NOTE: Use component function check to check the overall function of the battery current sensor circuit. During this check, a 1st trip DTC might not be confirmed.
Component Function Check
1.PRECONDITIONING
TESTING CONDITION:
2.PERFORM COMPONENT FUNCTION CHECK
With CONSULT
"BAT CUR SEN" should be above 2,300 mV at least once.
Without CONSULT
Diagnosis Procedure
1.CHECK GROUND CONNECTION
2.CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT
3.CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
4.CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
5.CHECK BATTERY CURRENT SENSOR
6.CHECK INTERMITTENT INCIDENT
Component Inspection
1.CHECK BATTERY CURRENT SENSOR
: Vehicle front
: To body ground
Before measuring the terminal voltage, confirm that the battery is fully charged.
P1554 battery current sensor
Description
The power generation voltage variable control enables fuel consumption to be
decreased by reducing the
engine load which is caused by the power generation of the generator. The
battery current sensor is installed
to the battery cable at the negative terminal. The sensor measures ...
Front stabilizer
Removal and Installation
REMOVAL
Remove the steering gear and linkage. Refer to ST-26, "Removal and
Installation".
Remove the nuts on the upper portion of stabilizer connecting
rod
Remove the stabilizer clamp bolts.
Remove the front stabilizer from the vehicle
INSPECTION AFTER ...
Remote keyless entry receiver
Removal and Installation
REMOVAL
Remove glove box assembly. Refer to IP-20, "Removal and
Installation".
Disconnect the harness connector from the remote keyless
entry receiver (1).
Remove the screw (a) and remote keyless entry receiver (1).
INSTALLATION
Installation ...