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 "Power Circuit Inspection".

Power Supply Circuit Inspection
1.

IG KEY "OFF", ENGINE "OFF".

2.

Disconnect RPS connector.

3.

IG KEY "ON".

4.

Measure the voltage of RPS connector terminal "1".

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 RPS power circuit and go to "Verification of Vehicle Repair".

[ Check between RPS connector terminal 1 and ECM connector terminal28. ]

Signal Circuit Inspection
1.

Check signal circuit voltage

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect RPS connector.

(3)

IG KEY "ON".

(4)

Measure the voltage of RPS connector terminal 2.

1)

Secification : 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 RPS connector and ECM connector.

(3)

Check continuity between RPS connector terminal 2 and ECM connector(CUD-A) terminal 43.

1)

Specification : continuity ( below 1.0Ω )

(4)

Is the measured resistance within the specification?

YES

a.

Go to "3. Check short to battery in signal circuit" as follows.

NO

a.

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

[ Check the circuit between Rail Pressure sensor terminal 2 and ECM connector terminal 43. ]

3.

Check short to battery in signal circuit

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect RPS connector and ECM connector.

(3)

IG KEY "ON".

(4)

Measure the voltage of RPS connector terminal 2.

1)

Specification : 0.0V~0.1V

(5)

Is abnormal voltage measured in signal circuit(with both connectors disconnected)?

YES

a.

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

NO

a.

Go to "Component Inspection".

Ground Circuit inspection
1.

IG KEY "OFF", ENGINE "OFF".

2.

Disconnect RPS connector.

3.

IG KEY "ON".

4.

Measure the voltage of RPS connector terminal 2. [ TEST "A" ]

5.

Measure the voltage between RPS connector terminal 2 and 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".

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