Dodge Dakota (R1). Manual — part 855
TEST
ACTION
APPLICABILITY
2
Turn the ignition on.
With the DRBIII
t, actuate the O2 HEATER TEST.
Monitor the O2 Sensor voltage on the DRBIII
t. (O2S voltage should drop below 1.5
volts within 2-3 minutes)
Does the DRBIII
t O2 Sensor voltage drop below 1.5 volts within 2-3 minutes during
the O2 HEATER TEST
All
Yes
→
No
→
3
Start the engine and allow engine to idle.
Check for any exhaust leaks between the engine and the appropriate O2S.
Check for exhaust leaks between the engine and the appropriate downstream O2
Sensor.
Are there any exhaust leaks?
All
Yes
→
Repair or replace leaking exhaust parts as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
4
Start engine. Allow the engine to reach normal operating temperature.
Check the exhaust for excessive smoke from internal oil or coolant leaks.
Is there an oil or coolant consumption condition present?
All
Yes
→
Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
5
Turn the ignition off.
Using a Voltmeter, back probe the O2 Sensor Ground circuit between the O2 sensor
harness connector and the PCM harness connector. Connect Voltmeter for positive
polarity.
Start the engine. Allow the engine to reach normal operating temperature.
Is the voltage below 0.10 volt?
All
Yes
→
No
→
Repair high resistance on O2S Sensor Ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
6
Turn the ignition off.
Using a Voltmeter, back probe the O2 Sensor Signal circuit between the O2 Sensor
harness connector and PCM harness connector.
Start the engine. Allow the engine to reach normal operating temperature.
Is the voltage below 0.10 volt?
All
Yes
→
No
→
Repair high resistance on O2S Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
152
DRIVEABILITY - GAS
P1195-1/1 O2 SENSOR SLOW DURING CATALYST MONITOR —
Continued
TEST
ACTION
APPLICABILITY
7
Turn the ignition off.
Disconnect the PCM harness connector(s).
Turn the ignition on.
With the DRBIII
t actuate the O2 HEATER TEST. Measure the voltage at the O2
sensor harness connector Heater Feed circuit.
Is the voltage above 11.0 volts?
All
No
→
Repair the OPEN circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Yes
→
8
Turn the ignition off.
Disconnect the O2 sensor harness connector.
Measure the resistance between the O2S Heater ground circuit and Engine Ground.
Is the resistance below 5.0 ohms?
All
No
→
Repair the OPEN circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Yes
→
9
Turn the ignition off.
Using a Voltmeter, back probe the O2 Sensor Signal circuit between the O2 Sensor
harness connector and PCM harness connector.
Start the engine. Allow the engine to reach normal operating temperature.
Is the voltage below 0.10 volt?
All
Yes
→
No
→
Repair high resistance on O2S Signal circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
10
Turn the ignition off.
Using a Voltmeter, back probe the O2 Sensor Ground circuit between the O2 sensor
harness connector and the PCM harness connector. Connect Voltmeter for positive
polarity.
Start the engine. Allow the engine to reach normal operating temperature.
Is the voltage below 0.10 volt?
All
Yes
→
No
→
Repair high resistance on O2S Sensor Ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
11
Start the engine and allow engine to idle.
Check for any exhaust leaks between the engine and the appropriate O2S.
Check for exhaust leaks between the engine and the appropriate downstream O2
Sensor.
Are there any exhaust leaks?
All
Yes
→
Repair or replace leaking exhaust parts as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
153
DRIVEABILITY - GAS
P1195-1/1 O2 SENSOR SLOW DURING CATALYST MONITOR —
Continued
TEST
ACTION
APPLICABILITY
12
Start engine. Allow the engine to reach normal operating temperature.
Check the exhaust for excessive smoke from internal oil or coolant leaks.
Is there an oil or coolant consumption condition present?
All
Yes
→
Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
13
If there are no possible causes remaining, view repair.
All
Repair
Replace the O2S.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
14
Start the engine and allow engine to idle.
Check for any exhaust leaks between the engine and the appropriate O2S.
Check for exhaust leaks between the engine and the appropriate downstream O2
Sensor.
Are there any exhaust leaks?
All
Yes
→
Repair or replace leaking exhaust parts as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
15
Start engine. Allow the engine to reach normal operating temperature.
Check the exhaust for excessive smoke from internal oil or coolant leaks.
Is there an oil or coolant consumption condition present?
All
Yes
→
Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
16
Turn the ignition off.
Note: Visually inspect the related wiring harness. Look for any chafed,
pierced, pinched, or partially broken wires.
Note: Visually inspect the related wire harness connectors. Look for broken,
bent, pushed out, or corroded terminals.
Note: Refer to any Technical Service Bulletins (TSB) that may apply.
Perform a wiggle test on the related wiring harnesses with the engine running.
Watch for the Good Trip Counter to change to 0.
Were any problems found?
All
Yes
→
Repair wiring harness/connectors as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
Test Complete.
154
DRIVEABILITY - GAS
P1195-1/1 O2 SENSOR SLOW DURING CATALYST MONITOR —
Continued
Symptom:
P1281-ENGINE IS COLD TOO LONG
When Monitored and Set Condition:
P1281-ENGINE IS COLD TOO LONG
When Monitored:
The ignition key on, engine running.
Set Condition:
The engine does not warm to 176 deg. F while driving for 20 minutes after
start.
POSSIBLE CAUSES
ENGINE COLD TOO LONG
TEST
ACTION
APPLICABILITY
1
Note: The best way to diagnose this DTC is to allow the vehicle to remain
outside overnight in order to have a completely cold soaked engine.
Note: Extremely cold outside ambient temperatures may cause this DTC to
set.
Verify that the coolant level is not low and correct as necessary.
Start the engine.
With the DRBIII
t, set the engine RPM to 1500 and allow the engine to warm up for
10-15 minutes.
With the DRBIII
t, monitor the ENG COOLANT TMP DEG value during the warm
up cycle. Make sure the transition of temperature change is smooth.
Did the engine temperature reach a minimum of 80° C (176° F)?
All
Yes
→
Test Complete.
No
→
Refer to the Service Information for cooling system performance
diagnosis. The most probable cause is a Thermostat problem.
Also, refer to any related TSBs.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
155
DRIVEABILITY - GAS
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