Dodge Dakota (R1). Manual — part 829
Symptom List:
P0031-O2 SENSOR HEATER CIRCUIT LOW 1/1
P0032-O2 SENSOR HEATER CIRCUIT HIGH 1/1
P0037-O2 SENSOR HEATER CIRCUIT LOW 1/2
P0038-O2 SENSOR HEATER CIRCUIT HIGH 1/2
P0051-O2 SENSOR HEATER CIRCUIT LOW 2/1
P0052-O2 SENSOR HEATER CIRCUIT HIGH 2/1
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0031-O2 SENSOR HEATER
CIRCUIT LOW 1/1.
When Monitored and Set Condition:
P0031-O2 SENSOR HEATER CIRCUIT LOW 1/1
When Monitored:
Battery voltage above 10.6 volts, ECT below a certain Temp but within
a set Temperature difference of Battery temp sensor.
Set Condition:
If voltage is lower than a specified voltage at start of test.
P0032-O2 SENSOR HEATER CIRCUIT HIGH 1/1
When Monitored:
Battery voltage above 10.6 volts, ECT below a certain Temp but within
a set Temperature difference of Battery temp sensor.
Set Condition:
If voltage is Higher than a specified voltage at start of test.
P0037-O2 SENSOR HEATER CIRCUIT LOW 1/2
When Monitored:
Battery voltage above 10.6 volts, ECT below a certain Temp but within
a set Temperature difference of Battery temp sensor.
Set Condition:
If voltage is lower than a specified voltage at start of test.
P0038-O2 SENSOR HEATER CIRCUIT HIGH 1/2
When Monitored:
Battery voltage above 10.6 volts, ECT below a certain Temp but within
a set Temperature difference of Battery temp sensor.
Set Condition:
If voltage is Higher than a specified voltage at start of test.
P0051-O2 SENSOR HEATER CIRCUIT LOW 2/1
When Monitored:
Battery voltage above 10.6 volts, ECT below a certain Temp but within
a set Temperature difference of Battery temp sensor.
Set Condition:
If voltage is lower than a specified voltage at start of test.
POSSIBLE CAUSES
FUSED IGNITION FEED CIRCUIT OPEN
48
DRIVEABILITY - GAS
POSSIBLE CAUSES
HEATER CONTROL CIRCUIT OPEN
HEATER ELEMENT CHECK
INTERMITTENT CONDITION
PCM
TEST
ACTION
APPLICABILITY
1
Actuate O2 Heater Test
Monitor the O2 Heater Voltage for 5 minutes
Did the go down to close to zero?
All
Yes
→
No
→
2
NOTE: Check for contaminates that may have damaged the O2 Sensor:
contaminated fuel, unapproved silicone, oil and coolant.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRBIII
t
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DRBIII
t Freeze Frame information. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
All
Yes
→
Repair as necessary
No
→
Test Complete.
3
Disconnect the O2 sensor harness connector.
Measure the resistance of the O2 Heater element circuit in the O2 sensor connector
(component side).
If this is a 2.5L is it between 4.0 and 5.0 ohms at 70° F(21° C)?
If this is a 3.9L or 5.9L is it between 3.3 and 4.1 ohms for before cat O2’s or between
4.0 and 5.0 ohms for after the cat O2’s at 70° F(21° C)?
If this is a 4.7L is it between 12.1 and 14.8 ohms at 70° F(21° C)?
All
Yes
→
No
→
Replace the O2 sensor.
4
Disconnect the O2 sensor harness connector.
Measure the voltage between the fused ignition circuit and ground.
Is the voltage above 12.0 volts?
All
Yes
→
No
→
Repair fused ignition feed circuit.
49
DRIVEABILITY - GAS
P0031-O2 SENSOR HEATER CIRCUIT LOW 1/1 —
Continued
TEST
ACTION
APPLICABILITY
5
Disconnect the O2 sensor harness connector.
Measure the resistance of the heater control circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair open or high resistance in the controlled ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
6
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
50
DRIVEABILITY - GAS
P0031-O2 SENSOR HEATER CIRCUIT LOW 1/1 —
Continued
Symptom:
P0071-AMBIENT TEMP SENSOR PERFORMANCE
POSSIBLE CAUSES
INTERMITTENT CONDITION
AMBIENT TEMPERATURE SENSOR VOLTAGE BELOW 1.0 VOLTS
SENSOR GROUND CIRCUIT HIGH RESISTANCE
AMBIENT TEMPERATURE SENSOR SIGNAL CIRCUIT HIGH RESISTANCE
PCM
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, read DTC’s.
Is the Good Trip display and equal to zero?
All
Yes
→
No
→
2
Turn the ignition off.
Disconnect the Ambient Temperature Sensor harness connector.
Using a jumper wire, jumper across the Ambient Temperature Sensor harness
connector.
Turn the ignition on.
With the DRBIII
t, read the Ambient Temp sensor voltage.
Is the voltage below 1.0 volt?
All
Yes
→
Replace the Ambient Temperature Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
3
NOTE: Ensure the voltmeter leads meet the terminals in the connector and
that there is good terminal to wire connection.
NOTE: Ensure the voltmeter leads are connected for positive polarity
Perform a voltage drop test by backprobing between the Sensor ground circuit at the
Ambient Temperature Sensor harness connector and PCM harness connector.
Start the engine.
Allow the engine to idle.
Is the voltage below 0.10 volt?
All
Yes
→
No
→
Repair the high resistance in the Sensor ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
51
DRIVEABILITY - GAS
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст