Kia Carens. Instruction — part 270

2001 > 1.8L DOHC >

Door lock system

2001 > 1.8L DOHC >

Circuit operation

The door lock system can be controlled manually by the door lock switch, which is located in the driver door.
Battery voltage is always applied from "DOOR LOCK" fuse to the one side of door lock relay coils through R/L
wire. The other side is connected to ETWIS, which controls door lock relay contacts according to door
lock/unlock switch signal.
With the door lock switch locked, a ground signal is sent to the ETWIS module, allowing door lock relay to be
energized. When the relay is activated, battery voltage is applied from the door lock relay to terminal B(G) of
door lock motor and the terminal A(L) of the door lock motor is grounded through the door lock relay. The doors
operate for approximately 0.2~0.4 second (i.e.) while the relay is activated). All doors are locked.
When the door lock switch is unlocked, battery voltage is applied to the door lock motors in opposite side and
the other side to be grounded. The motors operate in opposite direction and all doors are unlocked.

2001 > 1.8L DOHC >

Troubleshooting

Power door lock does not operate.

Check "DOOR LOCK (25A)" fuse and door lock relay. If open, check for short to ground though R/L wire,
replace fuse or relay. In addition, check that all system electrical connectors mated correctly.

Step

Inspection

Action

1

Check for voltage at terminal B(R) of the
ETWIS connector I-01.
Is battery voltage present?

Yes

Go to next step.

No

Repair open or short in the wire "R" or
replace.

2

Check for voltage between terminal B(R)
and terminal of ETWIS connector I-01.
Is Continuity present?

Yes

Go to next step.

No

Check for a poor connection at ground. If
OK, repair open in the wire "B" or replace.

3

Disconnect door lock switch connector.
Check for voltage at terminal G(Y/L) and
C(Y/G) of EWIS connector I-01.
Is the voltage approximately 5V?

Yes

Go to next step.

No

Check for a poor connection at ETWIS. If
OK, check ETWIS

4

Check for voltage at terminal C(Y/L) of
door lock switch connector I-11.
Is the voltage approximately 5V?

Yes

Go to next step.

No

Repair open or short in the wire "Y/L" or
replace.

5

Check for voltage at terminal B (Y/R) of
door lock switch connector I-11.
Is the voltage approximately 5V?

Yes

Go to next step.

No

Check open or short in the wire "Y/R" or
replace.

6

Check for continuity between terminal A(B)
of door lock switch connector I-11 and
ground.
Is continuity present?

Yes

Go to next step.

No

Repair open in the wire "B" to ground or
replace.

7

Check for door lock switch.
Is the door lock switch normal?

Yes

Go to next step.

No

Replace the door lock switch.

8

Connect door lock switch. Check for
voltage at terminal H(W) of ETWIS
connector I-01.
Is battery voltage present?

Yes

Go to next step.

No

Repair open or short in the wire "W" or
replace.

9

Check for voltage at terminal F(L/Y) of
ETWIS connector I-01.
Is battery voltage present?

Yes

Go to next step.

No

Repair open or short in the wire "L/Y" or
replace.

10

When lock switch is unlocked, check for
voltage at terminal H(W) of ETWIS
connector I-01.
Is the voltage approximately 0V for 0.2~0.4
second?

Yes

Check

No

Check for a poor connection at ETWIS. If
OK, check for ETWIS module.

11

When lock switch is unlocked, check for
voltage at terminal F(L/Y) of ETWIS
connector I-01.
Is the voltage approximately 0V for 0.2~0.4
second?

Yes

Go to next step.

No

Check a poor connection at ETWIS. If OK,
check for ETWIS module.

12

Check for continuity between terminal B(B)
of door lock relay and ground.
Is continuity present?

Yes

Go to next step.

No

Check for a poor connection to ground. If
OK, repair open in the wire "B" or replace.

13

Check for continuity between terminal D(G)
and F(L) of door lock relay and ground.
Is continuity present?

Yes

Go to next step.

No

Repair a poor connection to door lock
relay.

14

When door lock switch is unlocked, check
for voltage at terminal B(G) of each motor.
Is batter voltage present for approximately
0.2~0.4 second?

Yes

Go to next step.

No

Repair open or short in the wire "G" or
replace.

15

When door lock switch is locked, check for
voltage at terminal A(L) of each motor.
Is battery voltage present for
approximately 0.2~0.4 second?

Yes

Check for a poor connection to door lock
motor. If OK, replace power door lock
motor.

No

Repair open or short in the wire "L" or
replace.