B2581
B2581, B2582 INTAKE SENSOR
Description
Intake Sensor
The intake sensor (1) is located on the heater and cooling unit assembly. It converts temperature of air after it passes through the evaporator (2) into a resistance value which is then input to the auto amp.
Intake Sensor Circuit
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
- GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 5 seconds.
2. Check DTC.
Is DTC detected?
YES - Go to Diagnosis Procedure. "Diagnosis Procedure".
NO - END.
Diagnosis Procedure
1.CHECK VOLTAGE BETWEEN INTAKE SENSOR AND GROUND
1. Disconnect intake sensor connector.
2. Turn ignition switch ON.
3. Check voltage between intake sensor harness connector M39 terminal 1 and ground.
Is the inspection result normal?
YES - GO TO 2.
NO - GO TO 4.
2.CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND AUTO AMP.
1. Turn ignition switch OFF.
2. Disconnect auto amp. connector.
3. Check continuity between intake sensor harness connector M39 terminal 4 and auto amp. harness connector M37 terminal 26.
Is the inspection result normal?
YES - GO TO 3.
NO - Repair harness or connector.
3.CHECK INTAKE SENSOR
Refer to "Component Inspection".
Is the inspection result normal?
YES - Replace auto amp. Refer to Service and Repair.
NO - Replace intake sensor. Refer to Intake Sensor.
4.CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND AUTO AMP.
1. Turn ignition switch OFF.
2. Disconnect auto amp. connector.
3. Check continuity between intake sensor harness connector M39 terminal 1 and auto amp. harness connector M37 terminal 25.
4. Check continuity between intake sensor harness connector M39 terminal 1 and ground.
Is the inspection result normal?
YES - Replace auto amp. Refer to Service and Repair.
NO - Repair harness or connector.
Component Inspection
After disconnecting intake sensor (1) connector M39, measure resistance between terminals 1 and 4 at sensor side. Refer to table below.
If NG, replace intake sensor. Refer to Intake Sensor.