2006 DODGE RAM SRT-10 ignition

3.(K342) FUSED ASD RELAY OUTPUT CIRCUIT OPEN
Ignition on, engine not running.
With the scan tool, actuate the O2 Heater Test.
Using a 12-volt test light connected to ground, probe the (K342) Fused
ASD Relay Output circuit at the O2 Sensor harness connector.
Did the test light illuminate brightly?
Ye s>>
Go To 4
No>>
Repair the open or short to ground in the (K342) Fused
ASD Relay Output circuit. Inspect the related fuse and
repair as necessary.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 -
ENGINE - STANDARD PROCEDURE)
NOTE: Stop the actuation before continuing.
4.HEATER CONTROL CIRCUIT OPEN
Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance of the O2 Heater Control circuit (PWM) from the
O2 Sensor to the PCM harness connector.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 5
No>>
Repair the open in the O2 Heater Control (PWM) circuit.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 -
ENGINE - STANDARD PROCEDURE)

When Monitored:
Battery voltage above 10.6 volts, ASD is powered up, and O2 heater is on.
Set Condition:
Desired state does not match Actual state.
Possible Causes
O2 HEATER TEST
O2 SENSOR HEATER ELEMENT
(K343) FUSED ASD RELAY OUTPUT CIRCUIT
(K199) HEATER CONTROL CIRCUIT OPEN
(K199) HEATER CONTROL CIRCUIT SHORTED TO GROUND
PCM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
1.O2 HEATER TEST
Ignition on, engine not running.
With the scan tool, read DTCs and record the related Freeze Frame data.
With the scan tool, actuate the O2 Heater test.
Monitor the O2 Heater Voltage for 5 minutes.
Did the voltage drop down close to zero during the Heater test?
Ye s>>
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 2
NOTE: Stop the actuation before continuing.
2.O2 HEATER ELEMENT
Turn the ignition off.
Disconnect the O2 Sensor harness connector.
Measure the resistance of the O2 Heater element at the O2 Sensor
connector (component side).
On a four O2 Sensor system the resistance value for 1/1 and 2/1 O2
Heater elements is between 3.3 and 4.1 ohms and the 1/2 and 2/2 O2
Heater elements is between 4.0 and 5.0 ohms at 70° F(21.1°C).
NOTE: The resistance value will increase with warmer tempera-
tures.
Is the resistance within the listed specifications?
Ye s>>
Go To 3
No>>
Replace the O2 Sensor.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)

3.(K343) FUSED ASD RELAY OUTPUT CIRCUIT OPEN
Ignition on, engine not running.
With the scan tool, actuate the O2 Heater Test.
Using a 12-volt test light connected to ground, probe the (K343) Fused
ASD Relay Output circuit at the O2 Sensor harness connector.
Did the test light illuminate brightly?
Ye s>>
Go To 4
NOTE: Stop the actuation before continuing.
No>>
Repair the open or short to ground in the (K343) Fused
ASD Relay Output circuit. Inspect the related fuse and
repair as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
4.(K199) HEATER CONTROL CIRCUIT OPEN
Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance of the (K199) O2 Heater Control circuit from the
O2 Sensor to the PCM harness connector.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 5
No>>
Repair the open in the (K199) O2 Heater Control circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)

When Monitored:
Battery voltage above 10.6 volts, ASD is powered up, and O2 heater is on.
Set Condition:
Desired state does not match Actual state.
Possible Causes
O2 HEATER TEST
O2 SENSOR HEATER ELEMENT
(K343) FUSED ASD RELAY OUTPUT CIRCUIT
(K199) HEATER CONTROL CIRCUIT OPEN
(K199) HEATER CONTROL CIRCUIT SHORTED TO GROUND
PCM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
1.O2 HEATER TEST
Ignition on, engine not running.
With the scan tool, read DTCs and record the related Freeze Frame data.
With the scan tool, actuate the O2 Heater test.
Monitor the O2 Heater Voltage for 5 minutes.
Did the voltage drop down close to zero during the Heater test?
Ye s>>
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 2
NOTE: Stop the actuation before continuing.
2.O2 HEATER ELEMENT
Turn the ignition off.
Disconnect the O2 Sensor harness connector.
Measure the resistance of the O2 Heater element at the O2 Sensor
connector (component side).
On a four O2 Sensor system the resistance value for 1/1 and 2/1 O2
Heater elements is between 3.3 and 4.1 ohms and the 1/2 and 2/2 O2
Heater elements is between 4.0 and 5.0 ohms at 70° F(21.1°C).
NOTE: The resistance value will increase with warmer tempera-
tures.
Is the resistance within the listed specifications?
Ye s>>
Go To 3
No>>
Replace the O2 Sensor.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)

3.(K343) FUSED ASD RELAY OUTPUT CIRCUIT OPEN
Ignition on, engine not running.
With the scan tool, actuate the O2 Heater Test.
Using a 12-volt test light connected to ground, probe the (K343) Fused
ASD Relay Output circuit at the O2 Sensor harness connector.
Did the test light illuminate brightly?
Ye s>>
Go To 4
No>>
Repair the open or short to ground in the (K343) Fused
ASD Relay Output circuit. Inspect the related fuse and
repair as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
NOTE: Stop the actuation before continuing.
4.HEATER CONTROL CIRCUIT OPEN
Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance of the (K199) O2 Heater Control circuit from the
O2 Sensor to the PCM harness connector.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 5
No>>
Repair the open in the (K199) O2 Heater Control circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)

When Monitored:
With the ignition on and no Battery Temperature Sensor Open or Short Faultspresent.
Set Condition:
After 5 warm cycles have occurred (coolant increases at least 22°C (40°F) to a minimum of 71°C (160°F) and
the odometer mileage has increased 196.6 miles and the Battery Temperature has changed less than 4°C
(7.2°F) change in temperature. One trip fault.
Possible Causes
GOOD TRIP EQUAL TO ZERO
(K25) BATTERY TEMP SIGNAL CIRCUIT SHORTED TO VOLTAGE
BATTERY TEMPERATURE SENSOR
RESISTANCE IN THE (K25) BATTERY TEMP SENSOR SIGNAL CIRCUIT
RESISTANCE IN THE (K900) SENSOR GROUND CIRCUIT
(K25) BATTERY TEMP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
PCM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
1.GOOD TRIP EQUAL TO ZERO
Ignition on, engine not running.
With the scan tool, read DTCs and record the related Freeze Frame data.
Is the Good Trip Counter equal to zero?
Ye s>>
Go To 2
No>>
Refer to the INTERMITTENT CONDITION Symptom. (Refer to 9 - ENGINE - DIAGNOSIS AND TEST-
ING)
2.(K25) BATTERY TEMP SIGNAL CIRCUIT SHORTED TO VOLTAGE
Turn the ignition off.
Disconnect the Battery Temp Sensor harness connector.
Ignition on, engine not running.
Measure the voltage on the (K25) Battery Temp Signal circuit at the
Sensor connector.
Is the voltage above 5.2 volts?
Ye s>>
Repair the short to voltage on the (K25) Batt Temp Signal
circuit.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 -
ENGINE - STANDARD PROCEDURE)
No>>
Go To 3

3.(K25) BATTERY TEMP SENSOR SIGNAL
With the scan tool, read the Battery Temp Sensor voltage with the Batt Temp Sensor still disconnected.
Is the voltage above 4.6 volts?
Ye s>>
Go To 4
No>>
Go To 7
4.BATTERY TEMPERATURE SENSOR
Connect a jumper wire between the (K25) Battery Temp Signal circuit and the(K900) Sensor ground circuit at the
Sensor harness connector.
With the scan tool, read the Battery Temp Sensor voltage.
Is the voltage below 1.0 volt?
Ye s>>
Replace the Battery Temperature Sensor.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 5
NOTE: Remove the jumper wire before continuing.
5.RESISTANCE IN THE (K25) BATTERY TEMP SENSOR SIGNAL CIRCUIT
Turn the ignition off.
Connect the Battery Temp Sensor harness connector.
NOTE: Make sure the voltmeter leads meet the terminals in the
connector and that there is good terminal to wire connection.
NOTE: Make sure the voltmeter leads are connected for positive
polarity
Backprobe the (K25) Battery Temp Sensor Signal circuit at the Sensor
harness connector and the PCM harness connector with both voltmeter
leads.
Start the engine.
Allow the engine to idle.
Is the voltage below 0.10 of a volt?
Ye s>>
Go To 6
No>>
Repair the excessive resistance in the (K25) Battery Temp
Sensor Signal circuit.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 -
ENGINE - STANDARD PROCEDURE)

6.RESISTANCE IN THE (K900) SENSOR GROUND CIRCUIT
Turn the ignition off.
NOTE: Make sure the voltmeter leads meet the terminals in the
connector and that there is good terminal to wire connection.
NOTE: Make sure the voltmeter leads are connected for positive
polarity
Backprobe the (K900) Sensor ground circuit at the Battery Temperature
Sensor harness connector and the PCM harness connector using both
volt meter leads.
Start the engine.
Allow the engine to idle.
Is the voltage below 0.10 of a volt?
Ye s>>
Go To 8
No>>
Repair the excessive resistance in the (K900) Sensor
ground circuit.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 -
ENGINE - STANDARD PROCEDURE)
7.(K25) BATTERY TEMP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
Turn the ignition off.
Disconnect the Battery Temp Sensor harness connector.
Disconnect the PCM harness connectors.
Measure the resistance between ground and the (K25) Battery Temp
Signal circuit.
Istheresistancebelow100ohms?
Ye s>>
Repair the short to ground in the (K25) Battery Temp Signal
circuit.
Perform POWERTRAIN VERIFICATION TEST. (Refer to 9 -
ENGINE - STANDARD PROCEDURE)
No>>
Go To 8