Chrysler New Yorker. Manual - part 564

TEST TC-18A

CONTINUED - REPAIRING - EVAP PURGE SOLENOID CIRCUIT

FIG. 1

FIG. 2

FIG. 3

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TEST TC-18A

CONTINUED - REPAIRING - EVAP PURGE SOLENOID CIRCUIT

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TC-18A DISCONNECT 

THE

CONTINUED FROM PROPORTIONAL 

PURGE

THE PREVIOUS SOLENOID 

HARNESS

PAGE.

CONNECTOR.** 

SEE GENERAL INFO 4.1

USING A VOLTMETER, REPAIR 

THE

NOTE: PROPORTIONAL 

MEASURE THE

DOES THE VOLTAGE

NO 

PROPORTIONAL PURGE

PURGE SOLENOID 

PROPORTTIONAL PURGE

SWITCH FROM 0 TO 

SOLENOID CONTROL

STILL ACTUATING. SOLENOID 

CONTROL

7.0 VOLTS? 

CIRCUIT.*

CKT. FIG. 1

YES

STOP THE

USING A VOLTMETER, 

REPAIR THE SHORT

PROPORTIONAL 

MEASURE THE PWM

IS THE VOLTAGE

YES

TO VOLTAGE IN THE

SOLENOID ACTUATING

PURGE SOLENOID 

ABOVE 1.0 VOLT?

PWM PURGE SENSE

USING THE DRB, SENSE CIRCUIT. 

CIRCUIT.*

ACTUATE ASD RELAY. FIG. 

1

NO 

KEY OFF. DISCONNECT 

USING AN OHMMETER,

THE POWERTRAIN 

MEASURE RESISTANCE 

IS THE RESISTANCE 

NO 

REPAIR THE OPEN IN 

CONTROL MODULE OF 

THE PWM PURGE

BELOW 5.0 OHMS?

THE PWM PURGE

HARNESS CONNECTOR.** SENSE CIRCUIT. 

SENSE CIRCUIT.*

SEE GENERAL INFO 4.1

FIG. 2

YES

USING AN OHMMETER,

REPAIR THE SHORT

MEASURE THE PWM

IS THE RESISTANCE 

YES

TO GROUND IN THE

PURGE SENSE CKT TO BELOW 5.0 OHMS?

PWM PURGE SENSE

GROUND.

CIRCUIT. 

FIG. 1

NO 

USING AN OHMMETER,

MEASURE THE

IS THE RESISTANCE 

NO 

REPLACE THE

RESISTANCE OF THE

14.2 OHMS +/- 1.4? 

PROPORTIONAL PURGE

PROPORTIONAL PURGE

SOLENOID.* 

SOLENOID CKT. FIG. 3

YES

REPLACE THE

POWERTRAIN CONTROL

MODULE.* 

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TEST TC-19A

REPAIRING - INJECTOR #3 CONTROL CIRCUIT

Perform TEST TC-21A Before Proceeding

FIG. 1

FIG. 2

FIG. 3

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TEST TC-19A

REPAIRING - INJECTOR #3 CONTROL CIRCUIT

Perform TEST TC-21A Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

NOTE: IT MAY BE 

DISCONNECT INJECTOR 

START TEST 

NECESSARY TO 

REFER TO SERVICE

#3 HARNESS

TC-19A.

REMOVE THE INTAKE 

MANUAL FOR

CONNECTOR.** 

PLENUM IN THE

INSTRUCTIONS.

SEE GENERAL INFO 4.1

FOLLOWING STEPS. 

USING A VOLTMETER, 

USING THE DRB, MEASURE THE ASD

DOES 

THE VOLTAGE

NO 

PERFORM TEST 

ACTUATE THE ASD

RELAY OUTPUT 

CYCLE FROM 0 TO 12 

TC-19B.

RELAY. CIRCUIT. VOLTS? 

FIG. 1

YES

USING AN OHMMETER,

MEASURE THE

IS 

THE RESISTANCE NO REPLACE THE FUEL 

RESISTANCE ACROSS 

BETWEEN 10.0 AND

INJECTOR.* 

THE INJECTOR.

16.0 OHMS?

YES

DISCONNNECT THE

RECONNECT THE

POWERTRAIN CONTROL

INJECTOR HARNESS

MODULE HARNESS

CONNECTOR. CONNECTORS.**

SEE GENERAL INFO 4.1

USING A FUSED

USING A 12 VOLT 

JUMPER, JUMPER B+ TO 

TEST LIGHT, PROBE

DID THE TEST LIGHT

YES

REPLACE THE

THE ASD RELAY OUTPUT 

THE INJECTOR #3 

ILLUMINATE?

POWERTRAIN CONTROL

CKT AT THE PCM

CIRCUIT TO GROUND.

MODULE.* 

HARNESS CONN. FIG. 2

FIG. 2

NO 

USING AN OHMMETER,

REPAIR THE SHORT

DISCONNECT THE

MEASURE THE

IS THE RESISTANCE 

NO 

TO GROUND IN THE

INJECTOR HARNESS

INJECTOR #3 DRIVER 

BELOW 5.0 OHMS?

INJECTOR #3 DRIVER 

CONNECTOR.** CIRCUIT TO 

GROUND.

CIRCUIT.*

FIG. 1

YES

DRIVER CIRCUIT

USING AN OHMMETER,

FROM THE INJECTOR 

IS THE RESISTANCE 

NO 

REPAIR THE OPEN 

MEASURE THE

CONNECTOR TO THE

BELOW 5.0 OHMS?

INJECTOR #3 DRIVER 

INJECTOR #3 ...

PCM CONN.

CIRCUIT.*

FIG. 3

YES

CONTINUE TEST 

TC-19A ON THE

NEXT PAGE 

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