Chrysler New Yorker. Manual — part 412

TEST 1A

IDENTIFYING EXTERIOR LIGHTING SYSTEM FAILURES

Perform TEST SYMPTOM IDENTIFICATION 1A Before Proceeding

E
X

T

E

R

I

O

R

L

I

G

H

T

I

N

G

S
Y
S

T

E

M

246

TEST 1A

IDENTIFYING EXTERIOR LIGHTING SYSTEM FAILURES

Perform TEST SYMPTOM IDENTIFICATION 1A Before Proceeding

Verify the failure or customer’s complaint and make sure the vehicle is experiencing the problem at
this time.

1. With the DRB select ‘‘Body’’, ‘‘Body Computer’’. Verify Communication with the Body Controller,

if ‘‘No Response’’ or any other communication problems are
displayed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .perform “Vehicle Communication” TEST 1A.

2 With the DRB select ‘‘Read DTCs’’. If the code ‘‘Headlamp Switch Input Failure’’

is present . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .perform TEST 2A.

PROBLEM WITH

PERFORM

Low Beam Headlamps that will not turn On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TEST 3A

Low Beam Headlamps that will not turn Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TEST 4A

Parklamps that will not turn On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TEST 5A

Parklamps that will not turn Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TEST 6A

High Beam Headlamps that will not turn On. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TEST 7A

High Beam Headlamps that will not turn Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TEST 8A

Fog lamps that will not turn On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TEST 9A

Fog lamps that will not turn Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TEST 10A

Headlamp Time Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .TEST 11A

E
X

T

E

R

I

O

R

L

I

G

H

T

I

N

G

S
Y
S

T

E

M

247

TEST 2A

REPAIRING - HEADLAMP SWITCH INPUT FAILURE

Perform TEST 1A Before Proceeding

FIG. 1

FIG. 2

E
X

T

E

R

I

O

R

L

I

G

H

T

I

N

G

S
Y
S

T

E

M

248

TEST 2A

REPAIRING - HEADLAMP SWITCH INPUT FAILURE

Perform TEST 1A Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

NOTE: FOR LOCATION
OF ALL COMPONENTS.

START TEST 2A.

SEE GENERAL INFO 4.0

ENSURE THE

WITH THE DRB

HEADLAMP SWITCH IS

SELECT "SENSORS"

IS THE HEADLAMP

NO

PERFORM TEST

IN THE OFF

AND READ THE

SWITCH VOLTAGE

2B.

POSITION.

HEADLAMP SWTICH

ABOVE 4.8 VOLTS?

VOLTAGE.

YES

DISCONNECT THE

KEY ON.

REPAIR THE HEADLAMP

HEADLAMP SWITCH

WITH A VOLTMETER,

IS THE VOLTAGE

YES

SWITCH MUX CIRCUIT

13-WAY HARNESS

MEASURE THE HEADLAMP

ABOVE 5.3 VOLTS?

FOR A SHORT TO

CONNECTOR.**

SWITCH MUX CIRCUIT.

VOLTAGE. IF OK,

FIG. 1

REPLACE THE BCM.*

NO

CONNECT A JUMPER

CAVITIES 6 & 12.

DOES THE DRB

WIRE BETWEEN THE

DISPLAY

YES

REPLACE THE

HEADLAMP SWITCH

"HEADLAMP SWITCH

HEADLAMP SWITCH.*

13-WAY HARNESS

VOLTAGE:

CONN...

FIG. 1

0.0 VOLTS"?

NO

REMOVE THE JUMPER

HEADLAMP SWITCH

DOES THE DRB

WIRE.

13-WAY HARNESS

DISPLAY

YES

CONTINUE TEST

CONNECT A JUMPER

CONNECTOR

"HEADLAMP SWITCH

2A ON THE NEXT

WIRE BETWEEN

CAVITY 12.

VOLTAGE:

PAGE.

GROUND AND THE...

FIG. 1

0.0 VOLTS"?

NO

DISCONNECT THE

BODY CONTROL

MODULE C2 HARNESS

CONNECTOR.**

USING AN OHMMETER,

HEADLAMP SWITCH

MEASURE THE

AND THE BCM.

IS

THE RESISTANCE NO REPAIR

THE OPEN

HEADLAMP SWITCH

BELOW 5.0 OHMS?

HEADLAMP SWITCH

MUX CIRCUIT

MUX CIRCUIT.*

BETWEEN THE... FIGS. 1 & 2

YES

REPLACE THE BODY
CONTROL MODULE.*

E
X

T

E

R

I

O

R

L

I

G

H

T

I

N

G

S
Y
S

T

E

M

249