2000 CHRYSLER VOYAGER heater

TEST ACTION APPLICABILITY
4 Disconnect the 1/2 O2 Sensor Connector.
Check connectors - Clean / repair as necessary.
Is any terminal corroded, damaged, pushed out or miswired?All
Ye s®Repair or replace as necessary.
Perform VERIFICATION TEST VER-5A3.
No®Go To 5
5 Turn Ignition On (Engine Off).
Disconnect the 1/2 O2 Sensor Connector.
Check connectors - Clean / repair as necessary.
With the DRB, actuate the ASD Relay.
Using a voltmeter, measure the ASD Relay Output Circuit at the O2 Sensor
Connector (harness side).
Is the voltage above 10.0 volts?All
Ye s®Go To 6
No®Repair the open ASD Relay Output Circuit.
Perform VERIFICATION TEST VER-5A3.
6 Disconnect the 1/2 O2 Sensor Connector.
Check connectors - Clean / repair as necessary.
Using an ohmmeter, measure the O2 Sensor Heater Element at the O2 Sensor
Connector (component side).
Is the resistance between 4 and 7 ohms?All
Ye s®Go To 7
No®Replace the 1/2 O2 Sensor.
Perform VERIFICATION TEST VER-5A3.
7 Disconnect the 1/2 O2 Sensor Connector.
Check connectors - Clean / repair as necessary.
Using an ohmmeter, measure from the Heater Ground Circuit to ground at the O2
Sensor Connector (harness side).
Is the resistance below 5.0 ohms?All
Ye s®Replace the 1/2 O2 Sensor.
Perform VERIFICATION TEST VER-5A3.
No®Repair the open 1/2 O2 Sensor Ground Circuit.
Perform VERIFICATION TEST VER-5A3.
74
DRIVEABILITY
P-0141 1/2 O2S HEATER FAILURE ÐContinued
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Symptom:
* CHECKING OXYGEN SENSOR HEATER
POSSIBLE CAUSES
1/2 O2 SENSOR VOLTAGE BTWN 0.4 V & 0.6 V
1/1 O2 SENSOR DEFECTIVE
1/2 O2 SENSOR DEFECTIVE
ASD RELAY OUTPUT CIRCUIT OPEN (1/1 O2 SEN)
ASD RELAY OUTPUT CIRCUIT OPEN (1/2 O2 SEN)
HEATER GROUND CIRCUIT OPEN (1/1 O2 SEN)
HEATER GROUND CIRCUIT OPEN (1/2 O2 SEN)
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, actuate the ASD O2 Sensor Heater test.
Wait two minutes for O2 Sensor voltage to stabilize.
Read the Upstream O2 Sensor voltage.
Is the voltage of the Upstream O2 Sensor between 0.4 and 0.6 volts?All
Ye s®Go To 2
No®Go To 5
2Note: The O2 Sensor voltage staying between 0.4 V and 0.6 V indicates a
problem with that Sensor Circuit.
Ignition Off
Disconnect the Upstream O2 Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Turn key on.
With the DRB, actuate the O2 Sensor Heater test.
Using a Voltmeter, measure the ASD Relay Output Circuit at Sensor Connector.
Is the voltage above 10.0 volts?All
Ye s®Go To 3
No®Repair the open ASD Relay Output Circuit from O2 sensor
connector back to splice.
Perform Powertrain Verification Test VER-2A.
3 Ignition Off
Disconnect the Upstream O2 Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance between the Heater Ground Circuit and
a good ground.
Is the resistance below 5.0 ohms?All
Ye s®Go To 4
No®Repair the open Heater Ground Circuit to the Upstream O2
Sensor.
Perform Powertrain Verification Test VER-2A.
247
DRIVEABILITY
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TEST ACTION APPLICABILITY
4 If there are no potential causes remaining, the Upstream O2 Sensor is assumed to be
defective.
View repair options.All
Repair
Replace the Upstream O2 Sensor.
Perform Powertrain Verification Test VER-2A.
5 Ignition Off
Turn key on.
With the DRB, actuate the O2 Sensor Heater test.
Wait two minutes for O2 Sensor voltage to stabilize.
With the DRB, read the Downstream O2 Sensor voltage.
Is the voltage of the Downstream O2 Sensor between 0.4 and 0.6 volts?All
Ye s®Go To 6
No®Test complete.
6Note: The O2 Sensor voltage staying between 0.4 and 0.6 V indicates a
problem with that Sensor Circuit.
Ignition Off
Disconnect the Downstream O2 Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Turn key on.
With the DRB, actuate the O2 Sensor Heater test.
Using a Voltmeter, measure the ASD Relay Output Circuit in Sensor Connector.
Is the voltage above 10.0 volts?All
Ye s®Go To 7
No®Repair the open ASD Relay Output Circuit from O2 Sensor
Connector back to splice.
Perform Powertrain Verification Test VER-2A.
7 Ignition Off
Disconnect the Downstream O2 Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance between the Heater Ground Circuit and
a good ground.
Is the resistance below 5.0 ohms?All
Ye s®Go To 8
No®Repair the open Heater Ground Circuit to the Downstream O2
Sensor.
Perform Powertrain Verification Test VER-2A.
8 If there are no potential causes remaining, the Downstream O2 Sensor is assumed to
be defective.
View repair options.All
Repair
Replace the Downstream O2 Sensor.
Perform Powertrain Verification Test VER-2A.
248
DRIVEABILITY
* CHECKING OXYGEN SENSOR HEATER ÐContinued
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DIESEL POWER RELAYCAV CIRCUIT FUNCTION
30 INTERNAL FUSED B(+)
85 K51 20DB/YL DIESEL POWER RELAY CONTROL
86 A0 6RD FUSED B(+)
87 A142 18DG/OR DIESEL POWER RELAY OUTPUT
87A --
ENGINE STARTER MOTOR RELAYCAV CIRCUIT FUNCTION
30 INTERNAL FUSED B(+)
85 K90 18TN SMART START RELAY CONTROL
86 F45 20YL/RD (EATX) FUSED IGNITION SWITCH OUTPUT (START)
86 T141 20YL/RD (MTX) FUSED IGNITION SWITCH OUTPUT (START)
87 T40 12BR STARTER RELAY OUTPUT
87A --
FRONT BLOWER MOTOR RELAYCAV CIRCUIT FUNCTION
30 INTERNAL FUSED B(+)
85 Z1 18BK GROUND
86 F20 20WT FUSED IGNITION SWITCH OUTPUT (RUN)
87 C71 12DB BLOWER MOTOR DRIVER
87A --
FUEL HEATER RELAY (DIESEL)CAV CIRCUIT FUNCTION
30 INTERNAL FUSED B(+)
85 Z1 20BK GROUND
86 INTERNAL FUSED IGNITION SWITCH OUTPUT (ST-RUN)
87 A141 16DG/WT FUEL HEATER RELAY OUTPUT
87A --
FUEL PUMP RELAY (GAS)CAV CIRCUIT FUNCTION
30 INTERNAL FUSED B(+)
85 K31 18BR FUEL PUMP RELAY CONTROL
86 F87 18WT/BK FUSED IGNITION SWITCH OUTPUT (ST-RUN)
87 A141 16DG/WT FUEL PUMP RELAY OUTPUT
87A --
HIGH BEAM RELAYCAV CIRCUIT FUNCTION
30 A0 6RD B(+)
85 L324 20WT/LG HIGH BEAM RELAY CONTROL
86 A0 6RD B(+)
87 INTERNAL HIGH BEAM RELAY OUTPUT
87A --
HORN RELAYCAV CIRCUIT FUNCTION
30 INTERNAL FUSED B(+)
85 X4 18GY/OR (RHD DIE-
SEL)HORN RELAY CONTROL
85 X4 20GY/OR (EXCEPT RHD
DIESEL)HORN RELAY CONTROL
86 A0 6RD B(+)
87 X2 18DG/RD HORN RELAY OUTPUT
87A --
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CONNECTOR PINOUTS
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