P1553

P1553 BATTERY CURRENT SENSOR





DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 8 V or more at idle.
- GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for least 10 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES - Go to SEE Diagnosis Procedure.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT-I
1. Disconnect battery current sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between battery current sensor harness connector and ground.





Is the inspection result normal?
YES - GO TO 8.
NO - GO TO 2.
2.CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between battery current sensor harness connector and ECM harness connector.





Is the inspection result normal?
YES - GO TO 4.
NO - GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
- Harness for open between battery current sensor and ECM
- Loose or poor connection for each connector and harness
- Repair open circuit.
4.CHECK SENSOR POWER SUPPLY CIRCUIT
Check harness for short to power and short to ground, between the following terminals.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair short to ground or short to power in harness or connectors.
5.CHECK COMPONENTS
Check the following.
- Crankshaft position sensor ( P0335.)
- Camshaft position sensor (bank 1) ( P0340.)
- EVAP control system pressure sensor ( Testing and Inspection.)
- Refrigerant pressure sensor ( Testing and Inspection.)
Is the inspection result normal?
YES - GO TO 6.
NO - Replace malfunctioning component.
6.CHECK APP SENSOR
P2122.
Is the inspection result normal?
YES - GO TO 13.
NO - GO TO 7.
7.REPLACE ACCELERATOR PEDAL ASSEMBLY
Replace accelerator pedal assembly. Exploded View Without Distance Control Assist System Removal And Installation Without Distance Control Assist System Inspection Without Distance Control Assist System, "MODELS WITHOUT DISTANCE CONTROL ASSIST
Exploded View With Distance Control Assist System Removal And Installation With Distance Control Assist System Inspection With Distance Control Assist System, "MODELS WITH
DISTANCE CONTROL ASSIST SYSTEM : Removal and Installation" (With distance control assist system).
- INSPECTION END
8.CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between battery current sensor harness connector and ECM harness connector.





4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES - GO TO 10.
NO - GO TO 9.
9.DETECT MALFUNCTIONING PART
Check the following.
- Harness for open or short between battery current sensor and ECM
- Loose or poor connection for each connector and harness
- Repair open circuit, short to ground or short to power in harness or connectors.
10.CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between battery current sensor harness connector and ECM harness connector.





2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES - GO TO 12.
NO - GO TO 11.
11.DETECT MALFUNCTIONING PART
Check the following.
- Harness for open or short between battery current sensor and ECM
- Loose or poor connection for each connector and harness
- Repair open circuit, short to ground or short to power in harness or connectors.
12.CHECK BATTERY CURRENT SENSOR
P1554.
Is the inspection result normal?
YES - GO TO 13.
NO - Replace battery negative cable assembly.
13.CHECK INTERMITTENT INCIDENT
Intermittent Incident.
- INSPECTION END




Component Inspection (Battery Current Sensor)
1.CHECK BATTERY CURRENT SENSOR
1. Turn ignition switch OFF.
2. Reconnect harness connectors disconnected.





3. Disconnect battery negative cable.

Arrow: To body ground

4. Install jumper cable between battery negative terminal and body ground.
5. Turn ignition switch ON.
6. Check the voltage between ECM harness connector terminals under the following conditions.






Is the inspection result normal?
YES - INSPECTION END
NO - Replace battery negative cable assembly.