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.

caution

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.

Check HOT AT ALL TIMES power circuit voltage

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect PTC heater relay #1.

(3)

Measure the voltage of PTC heater relay #1 connector terminal 1.

a.

Secification : 11.5V~13.0V

(4)

Is the measured voltage within the specification?

YES

a.

Go to "2. Check IG KEY "ON" power circuit voltage" as follows.

NO

a.

Repair FUSIBLE LINK BOX 40A PTR HTR #1 FUSIBLE LINK and related circuit and go to "Verification of Vehicle Repair".

2.

Check IG KEY "ON" power circuit voltage

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect PTC heater relay #1.

(3)

IG KEY "ON".

(4)

Measure the voltage of PTC heater relay #1 connector terminal 4.

a.

Secification : 11.5V~13.0V

(5)

Is the measured voltage within the specification?

YES

a.

Go to "Control Circuit Inspection".

NO

a.

Repair E/R FUSE & RELAY BOX 10A SNSR FUSE and related circuit and go to "Verification of Vehicle Repair".

Control Circuit Inspection
1.

Check control circuit monitoring voltage

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect PTC heater relay #1.

(3)

IG KEY "ON".

(4)

Measure the voltage of PTC heater relay #1connector terminal 2.

a.

Secification : 0.0V~0.1V

(5)

Is the measured voltage within the specification?

YES

a.

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

NO

a.

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

2.

Check open in control circuit

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect PTC heater relay #1 and ECM connector.

(3)

Check continuity between PTC heater relay #1 connector terminal 2 and ECM connector terminal 94.

a.

Secification : Continuity ( below 1.0Ω )

(4)

Is the measured resistance within the specification?

YES

a.

Go to "3. Check short to ground in control circuit" as follows.

NO

a.

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

3.

Check short to ground in control circuit

(1)

IG KEY "OFF", ENGINE "OFF"

(2)

Disconnect PTC heater relay #1 and ECM connector.

(3)

Measure the resistance of PTC heater relay #1 connector terminal 2.

a.

Specification : Discontinuity ( Infinite Ω )

(4)

Is the measured resistance within the specification?

YES

a.

Go to "Component Inspection".

b.

ON

a.

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

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