Chrysler New Yorker. Manual — part 584

TEST TC-40A

REPAIRING - NO CRANK REFERENCE SIGNAL AT PCM

Perform TEST DTC Before Proceeding

FIG. 1

FIG. 2

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TEST TC-40A

REPAIRING - NO CRANK REFERENCE SIGNAL AT PCM

Perform TEST DTC Before Proceeding

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

CYCLE THE IGNITION

START TEST

OFF, THEN ON.

TC-40A.

ATTEMPT TO START

THE ENGINE...

WITH THE DRB IN

READ THE CURRENT

DID ONLY THE CMP

YES

CONTINUE TEST

INPUT/OUTPUT

CMP AND CKP

STATE CHANGE?

TC-40A ON THE

DISPLAY... STATES.

NEXT

PAGE.

NO

DID ONLY THE CKP

YES

PERFORM TEST

STATE CHANGE?

TC-1A.

NO

DOES THE CKP AND

NO

PERFORM TEST

THE CMP SENSORS

TC-40D.

STATE CHANGE?

YES

WIGGLE THE WIRING

DID THE ENGINE

REPAIR CIRCUIT AS

IF NOT ALREADY

HARNESS FROM CMP &

MISS OR DIE OUT

YES

NECESSARY WHERE

RUNNING, START THE

CKP SENSORS TO THE

WHEN WIGGLING

WIGGLING CAUSED

ENGINE.

POWERTRAIN CONTROL

WIRES?

THE ENGINE TO MISS

MODULE.

OR DIE OUT.*

NO

WITH

THE DRB IN WHILE THE ENGINE WERE

THERE ANY

CHECK HARNESS AND

THE LAB SCOPE,

IS RUNNING, WIGGLE

IRREGULARITIES IN

YES

CONNECTORS

PROBE THE CRANK

THE WIRE HARNESS

THE LAB SCOPE

CAREFULLY, IF OK

SENSOR SIGNAL WIRE

AND CONNECTORS.

PATTERN?

REPLACE THE CRANK

FIG. 1

FIG. 2

SENSOR.*

NO

KEY OFF, CONNECT

KEY ON,DO NOT

THE LAB SCOPE TO START THE ENGINE,

DID THE CAM SENSOR

YES

REPLACE THE CAM

THE CAM SENSOR

LOOK FOR ANY

GENERATE ANY

SENSOR.*

PULSES GENERATED

PULSES?

FIG. 1

BY THE CAM SENSOR.

NO

REFER TO GENERAL

INFO 3.3.2 FOR
INFORMATION ON

TEST COMPLETE.*

INACTIVE CODES.

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TEST TC-40A

CONTINUED - REPAIRING - NO CRANK REFERENCE SIGNAL AT PCM

FIG. 1

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TEST TC-40A

CONTINUED - REPAIRING - NO CRANK REFERENCE SIGNAL AT PCM

*Perform Verification TEST VER-2A.

**Check connectors - Clean / repair as necessary.

TEST TC-40A

CONTINUED FROM

THE PREVIOUS

TURN IGNITION OFF.

PAGE.

DISCONNECT THE CRANK

POSITION (CKP)

SENSOR CONNECTOR.**

TURN IGNITION ON.

SEE GENERAL INFO 4.4

USING A VOLTMETER,

MEASURE THE VOLTAGE

IS THE VOLTAGE

NO

PERFORM TEST

FROM THE 8-VOLT

ABOVE 7.0 VOLTS?

TC-40B.

SUPPLY CIRCUIT.

FIG. 1

YES

CONNECT ONE END OF

A JUMPER WIRE TO

TURN IGNITION OFF.

THE CRANK POSITION

SIGNAL CIRCUIT.

FIG. 1

TURN IGNITION ON.

THEN TAP THE OTHER

WITH THE DRB,

END OF THE JUMPER

DOES THE CKP STATE

NO

CONTINUE TEST

MONITOR THE

TO SENSOR GROUND

CHANGE TO PRESENT?

TC-40A ON THE

CURRENT CKP

SEVERAL TIMES. NEXT

PAGE.

STATE... FIG.

1

YES

PERFORM TEST

TC-40C.

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