Terminal and Connector Inspection
1.

Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various problems and damage 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 separation, 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?

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

▶ Go to "Power Circuit Inspection".

Power Circuit Inspection
■ Check voltage in power circuit
1.

IG key OFF.

2.

Disconnect 'A/C PRESSURE TRANSDUCER' connector.

3.

IG key ON.

4.

Check voltage between 'Supply' terminal of 'A/C PRESSURE TRANSDUCER' harness connector and chassis ground.

Specification : 4.8V ~ 5.1V

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5.

Is the measured value within specification?

▶ Go to "Signal Circuit Inspection".

▶ Repair short to ground between 'Supply' terminal of 'A/C PRESSURE TRANSDUCER' harness connector and 'Supply' terminal of ECM harness connector, and go to "Verification of Vehicle Repair" procedure.

Signal Circuit Inspection
■ Check open in signal circuit
1.

IG key OFF.

2.

Disconnect 'A/C PRESSURE TRANSDUCER' connector and ECM connector.

3.

Check resistance between 'Signal' terminal of 'A/C PRESSURE TRANSDUCER' harness connector and 'Signal' terminal of ECM harness connector.

Specification : Continuity (Below 1.0Ω)

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4.

Is the measured value within specification?

▶ Go to "Short to ground in signal circuit" as follows.

▶ Repair open between 'Signal' terminal of 'A/C PRESSURE TRANSDUCER' harness connector and 'Signal' terminal of ECM harness connector, and go to "Verification of Vehicle Repair" procedure.

■ Check short to ground in signal circuit
5.

IG key OFF.

6.

Disconnect 'A/C PRESSURE TRANSDUCER' connector and ECM connector.

7.

Check resistance between 'Signal' terminal of 'A/C PRESSURE TRANSDUCER' harness connector and chassis ground.

Specification : Infinite (∞ Ω)

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8.

Is the measured value within specification?

▶ Go to "Component Inspection" procedure.

▶ Repair short to ground between 'Signal' terminal of 'A/C PRESSURE TRANSDUCER' harness connector and 'Signal' terminal of ECM harness connector, and go to "Verification of Vehicle Repair" procedure.

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