Chrysler New Yorker. Manual — part 566

TEST TC-20A

REPAIRING - INJECTOR #2 CONTROL CIRCUIT

Perform TEST TC-21A Before Proceeding

FIG. 1

FIG. 2

FIG. 3

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TEST TC-20A

REPAIRING - INJECTOR #2 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

#2 HARNESS

TC-20A.

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-20B.

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 #2

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 #2 DRIVER

BELOW 5.0 OHMS?

INJECTOR #2 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 #2 DRIVER

INJECTOR #2 ...

PCM CONN.

CIRCUIT.*

FIG. 3

YES

CONTINUE TEST

TC-20A ON THE

NEXT PAGE

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TEST TC-20A

CONTINUED - REPAIRING - INJECTOR #2 CONTROL CIRCUIT

FIG. 1

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TEST TC-20A

CONTINUED - REPAIRING - INJECTOR #2 CONTROL CIRCUIT

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

CONNECT THE

TEST TC-20A

POWERTRAIN CONTROL

CONTINUED FROM MODULE

HARNESS

PREVIOUS PAGE.

CONNECTORS.

KEY ON, ENGINE USING A VOLTMETER,

REPAIR

THE SHORT

OFF.WITH THE DRB,

MEASURE THE

IS THE VOLTAGE

YES

TO VOLTAGE IN THE

ACTUATE THE ASD

INJECTOR #2 DRIVE

ABOVE 1.0 VOLT?

INJECTOR #2 DRIVE

RELAY. CIRCUIT.

CIRCUIT.*

FIG. 1

NO

REPLACE THE

POWERTRAIN CONTROL

MODULE.*

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