Chrysler New Yorker. Manual — part 452

TEST 5A

REPAIRING

(

A/C CONTROL BLEND DOOR INPUT SHORTED TO BATTERY

(

TROUBLE

CODE

Perform TEST 1B Before Proceeding

FIG. 1

FIG. 2

M

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406

TEST 5A

REPAIRING

(

A/C CONTROL BLEND DOOR INPUT SHORTED TO BATTERY

(

TROUBLE

CODE

Perform TEST 1B Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TURN THE IGNITION

ON.

START TEST 5A.

ERASE THE TROUBLE

CODE.

DISCONNECT THE

USING A VOLTMETER,

A/C-HEATER "C1"

MEASURE THE

IS THE VOLTAGE

NO

REPLACE THE

HARNESS CONNECTOR.**

TEMPERATURE SELECT ABOVE 0.5 VOLTS? A/C-HEATER

CONTROL

SIGNAL CIRCUIT.

HEAD.*

FIG. 1

FIG. 1

YES

DISCONNECT THE BODY

USING A VOLTMETER,

REPAIR THE

CONTROL MODULE C2

MEASURE THE

IS THE VOLTAGE

YES

TEMPERATURE SELECT

HARNESS CONNECTOR.**

TEMPERATURE SELECT ABOVE 0.2 VOLTS? SIGNAL

CIRCUIT FOR

SIGNAL CIRCUIT.

A SHORT TO

SEE GENERAL INFO 4.0

FIG. 2

VOLTAGE.*

NO

REPLACE THE BODY
CONTROL MODULE.*

M

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N
U
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407

TEST 6A

REPAIRING

(

A/C CONTROL MODE DOOR INPUT OPEN OR SHORTED TO BATTERY

(

TROUBLE CODE

Perform TEST 1B Before Proceeding

FIG. 1

FIG. 2

M

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N
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408

TEST 6A

REPAIRING

(

A/C CONTROL MODE DOOR INPUT OPEN OR SHORTED TO BATTERY

(

TROUBLE CODE

Perform TEST 1B Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

ERASE THE TROUBLE

START TEST 6A.

CODE.

DISCONNECT THE

DISCONNECT THE BODY

A/C-HEATER CONTROL

CONTROL MODULE C2

"C1" HARNESS

HARNESS CONNECTOR.**

CONNECTOR.**

FIG. 1

SEE GENERAL INFO 4.0

USING A VOLTMETER, REPAIR

THE MODE

TURN IGNITION ON

MEASURE THE MODE

IS THE VOLTAGE

YES

SWITCH MUX CIRCUIT

(ENGINE OFF).

SWITCH MUX

ABOVE 0.5 VOLTS?

FOR A SHORT TO

CIRCUIT. BATTERY.*

FIG. 2

NO

KEY OFF. CONNECT A

USING AN OHMMETER,

JUMPER WIRE FROM THE

MEASURE BETWEEN

IS THE RESISTANCE

NO

REPAIR THE OPEN

MODE SWITCH MUX

GROUND AND THE MODE

BELOW 5.0 OHMS?

MODE SWITCH MUX

CIRCUIT TO GROUND.

SWITCH MUX CIRCUIT.

CIRCUIT.*

FIG. 2

FIG. 1

YES

REMOVE THE JUMPER

RECONNECT THE BODY

WIRE.

CONTROL MODULE C2
HARNESS CONNECTOR.

USING A VOLTMETER,

TURN IGNITION ON

MEASURE THE MODE

IS THE VOLTAGE

YES

REPLACE THE

(ENGINE OFF).

SWITCH MUX

ABOVE 4.9 VOLTS?

A/C-HEATER CONTROL

CIRCUIT. HEAD.*

FIG. 1

NO

REPLACE THE BODY
CONTROL MODULE.*

M

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409