Chrysler New Yorker. Manual — part 621
TEST TC-105A
REPAIRING - 1/2 O2S HEATER FAILURE
Perform TEST DTC Before Proceeding
1/2 RIGHT BANK DOWN
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TEST TC-105A
REPAIRING - 1/2 O2S HEATER FAILURE
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A.
**Check connectors - Clean / repair as necessary.
ARE THERE ANY
START TEST
WITH THE DRB, READ
OTHER "1/2 O2
YES
TC-105A. ALL TROUBLE CODES.
SENSOR" RELATED
TROUBLE CODES? OXYGEN
NO
TURN IGNITION OFF
WAIT 8 MINUTES.
(ENGINE OFF)
IGNITION ON.
WAIT FOR THE VOLTAGE
WITH THE DRB IN
READING TO STABILIZE
SENSORS, MONITOR
THE 1/2 O2 SENSOR
VOLTAGE. BETWEEN 0.4 AND 0.6V
WITH THE DRB IN
MONITOR THE
IS THE
ACTUATOR TESTS,
1/2 O2 SENSOR
1/2 O2 SENSOR
YES
CONTINUE TEST
PERFORM THE O2 VOLTAGE FOR TWO
VOLTAGE STILL
TC-105A ON
THE
SENSOR HEATER
MINUTES.
BETWEEN 0.4 AND
NEXT PAGE.
TEST.
0.6V?
NO
AT THIS TIME, THE
CONDITION REQUIRED
STOP ALL ACTUATOR
TO SET THE TROUBLE
TESTS.
CODE IS NOT
TEST COMPLETE.*
PRESENT.
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TEST TC-105A
CONTINUED - REPAIRING - 1/2 O2S HEATER FAILURE
1/2 RIGHT BANK DOWN
FIG. 1
1/2 RIGHT BANK DOWN
FIG. 2
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TEST TC-105A
CONTINUED - REPAIRING - 1/2 O2S HEATER FAILURE
*Perform Verification TEST VER-2A.
**Check connectors - Clean / repair as necessary.
TEST TC-105A
DISCONNECT THE
IS ANY TERMINAL
CONTINUED FROM
1/2 O2 SENSOR
CORRODED, DAMAGED,
YES
REPAIR OR REPLACE
THE PREVIOUS
HARNESS CONNECTOR.**
PUSHED OUT OR
AS NECESSARY.*
PAGE MISWIRED?
SEE GENERAL INFO 4.4
NO
NOTE:
USING A VOLTMETER, CHECK FUSES OR
THE DRB IS STILL
MEASURE THE ASD
IS THE VOLTAGE
NO
REPAIR THE OPEN
ACTUATING THE O2 RELAY OUTPUT
ABOVE 10.5
VOLTS?
ASD RELAY OUTPUT
SENSOR HEATER
CIRCUIT.
CIRCUIT.*
TEST.
FIG. 1
YES
STOP ALLOW 1/2 02
SENSOR
ALL ACTUATOR
TO COOL TO ROOM
TEMPERATURE.
TESTS.
USING AN OHMMETER,
MEASURE THE O2 IS THE RESISTANCE
NO
REPLACE THE 1/2 O2
SENSOR HEATER
BETWEEN 4.0 AND
SENSOR.*
ELEMENT TERMINALS
7.0 OHMS?
1 AND 2. FIG. 2
YES
USING AN OHMMETER,
CIRCUIT TO GROUND.
IS THE RESISTANCE
NO
REPAIR THE OPEN
MEASURE FROM THE
BELOW 5.0 OHMS?
1/2 O2 SENSOR
HEATER GROUND...
FIG. 1
GROUND CIRCUIT.*
YES
REPLACE THE 1/2 O2
SENSOR.*
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