Terminal and Connector Inspection
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 "Signal Circuit Inspection ".

Signal Circuit Inspection
1.

Check signal circuit voltage

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect CKPS connector.

(3)

IG KEY "ON".

(4)

Measure the voltage of CKPS connector terminal 2 and 3.

1)

Specification : 2.4V~2.6V

(5)

Is the measured voltage within the specification?

YES

a.

Go to "3.Check short between signal circuits."

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 CKPS connector and ECM connector.

(3)

Check continuity between CKPS connector terminal 2 and ECM connector(CUD-A) terminal 27.

(4)

Check continuity between CKPS connector terminal 3 and ECM connector(CUD-A) terminal 12.

1)

Specification : Continuity ( below 1.0Ω )

(5)

Is the measured resistance within the specification?

YES

a.

Go to "3. Check short between signal circuits".

NO

a.

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

3.

Check short between signal circuits

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect CKPS connector and ECM connector.

(3)

Check continuity between CKPS connector terminal 2 and 3.

1)

Specification : Discontinuity ( Infinite Ω )

(4)

Is the measured resistance within the specification?

YES

a.

Go to "4. Check short to ground in signal circuit" as follows.

NO

a.

Repair short between signal circuits and go to "Verification of Vehicle Repair".

4.

Check short to ground in signal circuit

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect CKPS connector and ECM connector.

(3)

Check continuity between CKPS connector terminal 1(shield ground) and 2,3(crank signal)

1)

Specification : Discontinuity ( Infinite Ω )

(4)

Is the measured resistance within the specification?

YES

a.

Go to "Ground Circuit Inspection".

NO

a.

Repair the short between signal circuit and shield ground and go to "Verification of Vehicle Repair".

Ground Circuit inspection
1.

IG KEY "OFF", ENGINE "OFF".

2.

Disconnect CKPS connector.

3.

Check continuity between CKPS connector terminal 1(shield ground) and chassis ground.

1)

Specification : Continuity ( below 1.0Ω )

4.

Is the measured resistance within the specification?

YES

a.

Go to "Component Inspection".

NO

a.

Repair open or poor connection in ground circuit and go to "Verification of Vehicle Repair".

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