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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 CMPS connector.

3.

IG KEY "ON".

4.

Measure the voltage of CMPS connector terminal 1.

1)

Specification : 11.0V~13.0V ( Main relay "ON" power )

5.

Is the measured voltage within the specification?

YES

a.

Go to "Signal Circuit Inspection".

NO

a.

Repair open in Main relay power circuit and fuse, and go to "Verification of Vehicle Repair".

[Check open in E/R JUNCTION BOX 15A INJ FUSE and related circuit.]

※If the fuse is damaged again after replacing the damaged fuse, repair short to ground in Main relay power circuit.

1.

Check CMPS signal voltage

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect CMPS connector.

(3)

IG KEY "ON".

(4)

Measure the voltage of CMPS connector terminal 2.

1)

Specification : 4.8V~5.1V

(5)

Is the measured voltage within the specification?

YES

a.

Go to "Ground Circuit Inspection".

NO

a.

Go to "2. Check open in signal circuit" as follows.

2.

Check open in signal circuit

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect CMPS connector and ECM connector.

(3)

Check continuity between CMPS connector terminal 2 and ECM connector(CDD-A) terminal 50.

1)

Specification : Continuity ( below 1.0Ω )

(4)

Is the measured resistance within the specification? (Is continuity confirmed?)

YES

a.

Repair short to ground in signal circuit and go to "Verification of Vehicle Repair".

NO

a.

Repair open in the circuit between CMPS connector terminal 2 and ECM connector(CDD-A) terminal 50 and go to "Verification of Vehicle Repair".

1.

IG KEY "OFF", ENGINE "OFF".

2.

Disconnect CMPS connector.

3.

IG KEY "ON".

4.

Check the voltage of CMPS connetor terminal 2. [ TEST "A" ]

5.

Check the voltage between CMPS connetor terminal 2 and terminal 3. [ TEST "B" ]

( terminal 2 : Check + prove , terminal 3 : Check - prove )

1)

Specification : [TEST "A"] Voltage - [TEST "B"] Voltage = below 200mV

6.

Is the measured voltage within the specification?

YES

a.

Go to "Component 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".