6531789

1.

Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various problems and damge of component.

2.

Perform checking procedure as follows.

(1)

Check damage of harness and terminals : Check terminals for contact resistance, corrosion and deformation.

(2)

Check connecting condition of ECM and component connector : Check terminal seperation, damage of locking device and connecting condition between terminal and wiring.

note

Disconnect the pin which requires checking at male connector and insert it to the terminal at female connector for checking connecting condition. ( after checking, reconnect the pin at correct position. )

3.

Is the problem found?

YES

a.

Repair the trouble causing part and go to "Verification of Vehicle Repair".

NO

a.

Go to "Power Circuit Inspection".

1.

IG KEY "OFF", ENGINE "OFF".

2.

Disconnect A/C pressure transducer connector.

3.

IG KEY "ON".

4.

Measure the voltage of A/C pressure transducer terminal 3.

1)

Specification : 4.8V~5.1V

5.

Is the measured voltage within the specification ?

YES

a.

Go to "Signal Circuit Inspection".

NO

a.

Repair open in power circuit of A/C pressure transducer and go to "Verification of Vehicle Repair".

1.

IG KEY "OFF", ENGINE "OFF"

2.

Disconnect A/C pressure transducer connector and ECM connector.

3.

IG KEY "ON"

4.

Measure the voltage of A/C pressure transducer terminal 2.

1)

Specification : 0.0V~0.1V

5.

Is the measured voltage within the specification ?

YES

a.

Go to "Ground Circuit Inspection".

NO

a.

Repair short to battery and go to "Verification of Vehicle Repair".

1.

IG KEY "OFF", ENGINE "OFF"

2.

Disconnect A/C pressure transducer connector.

3.

IG KEY "ON"

4.

Measure the voltage of A/C pressure transducer terminal 3. [ TEST "A" ]

5.

Measure the voltage of A/C pressure transducer terminal 3 and terminal 1. [ TEST "B" ]

( terminal 3: Check + prove , terminal 1 : Check - prove )

1)

Specification :The voltage difference between TEST "A" and TEST "B" is within 200mV

6.

Is the measured voltage within the specification ?

YES

a.

Go to "Ground Circuit Inspection".

NO

a.

When "B" voltage is not detected : Repair open in ground circuit and go to "Verification of Vehicle Repair"

b.

When the voltage difference between "A" and "B" is above 200mV : Eliminate the causes of excessive resistance and go to "Verification of Vehicle Repair".