Sensor Power Supply2 Circuit

SENSOR POWER SUPPLY2 CIRCUIT

Description

ECM supplies a voltage of 5 V to some of the sensors systematically divided into 2 groups, respectively.
Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously in the sensors belonging to the same group as the short-circuited sensor.
- APP sensor 1
- Battery current sensor
- CKP sensor (POS)
- Intake manifold runner control valve position sensor
- Refrigerant pressure sensor
- TP sensor
NOTE:
If sensor power supply 1 circuit is malfunctioning, DTC P0643 is displayed.
- APP sensor 2
- CMP sensor (PHASE)
- EVT control position sensor
- EOP sensor
- MAF sensor


Diagnosis Procedure


1. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-1

1.Turn ignition switch OFF.
2.Disconnect accelerator pedal position (APP) sensor harness connector.
3.Turn ignition switch ON.
4.Check the voltage between APP sensor harness connector and ground.





Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 2.

2. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-2

1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check the continuity between APP sensor harness connector and ECM harness connector.





*1: Except for California
*2: For California
Is the inspection result normal?
YES- GO TO 3.
NO- Repair open circuit.

3. CHECK SENSOR POWER SUPPLY 2 CIRCUIT

1.Disconnect following sensors harness connector.
2.Check harness for short to power and short to ground, between the following terminals.





*1: Except for California
*2: For California
Is the inspection result normal?
YES- GO TO 4.
NO- Repair short to ground or short to power in harness or connectors.

4. CHECK COMPONENTS

Check the following.
- APP sensor 2 (Refer to "Component Inspection" P2127.)
- Camshaft position sensor (PHASE) (Refer to "Component Inspection (Camshaft position sensor)" P0340.)
- EVT control position sensor (Refer to "Component Inspection" P1078.)
- EOP sensor (Refer to"Component Inspection" P0520.)
- MAF sensor (Refer to "Component Inspection" P0101.)
Is the inspection result normal?
YES- Refer to "Intermittent Incident" Intermittent Incident.
NO- Replace malfunctioning component.