Dodge Ram Truck 1500-2500-3500. Manual — part 845
P0222-THROTTLE POSITION SENSOR 2 CIRCUIT LOW (CONTINUED)
9.
(F855) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
Measure the resistance between ground and the (F855) 5-volt Supply
circuit at the Throttle Body harness connector.
Is the resistance below 100 ohms?
Yes
>> Repair the short to ground in the (F855) 5-volt Supply cir-
cuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Go To 10
10.
PCM
NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal
push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and
Ground circuits.
Were there any problems found?
Yes
>> Repair as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
11.
THROTTLE FOLLOWER TEST
Ignition on, engine not running.
With the scan tool, perform the Throttle Follower Test.
Monitor the TP Sensor No.2 voltage while slowly pressing the Throttle pedal down.
Is there a smooth voltage change from high to low?
Yes
>> Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Disconnect the Battery when replacing the Throttle Body Assembly. Replace the Throttle Body Assem-
bly. After installation is complete, with a scan tool select the ETC RELEARN function.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
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ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L
DR/DH
P0223-THROTTLE POSITION SENSOR 2 CIRCUIT HIGH
DR/DH
ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L
9 - 303
P0223-THROTTLE POSITION SENSOR 2 CIRCUIT HIGH (CONTINUED)
For the Engine circuit diagram (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
Throttle Position Sensor No.2 Signal circuit voltage is greater than 4.9 volts for 25 ms. One Trip Fault. ETC
light will illuminate.
Possible Causes
(K122) TP SENSOR NO.2 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
(K122) TP SENSOR NO.2 SIGNAL CIRCUIT SHORTED TO THE (F855) 5-VOLT SUPPLY CIRCUIT
(K922) SENSOR RETURN CIRCUIT OPEN
THROTTLE POSITION SENSOR/THROTTLE BODY
PCM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.
ACTIVE DTC
NOTE: If a 5-Volt supply DTC has also set, diagnose the 5-Volt DTC before continuing.
Ignition on, engine not running.
With a scan tool, read DTCs.
Is the DTC active at this time?
Yes
>> Go To 2
No
>> Go To 7
2.
THROTTLE POSITION SENSOR
Turn the ignition off.
Disconnect the Throttle Body Assembly harness connector.
Ignition on, engine not running.
With the scan tool monitor the TP Sensor No.2 voltage.
Is the voltage below 0.5 volt?
Yes
>> Disconnect the Battery when replacing the Throttle Body Assembly. Replace the Throttle Body Assem-
bly. After installation is complete, with the scan tool select the ETC RELEARN function.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Go To 3
9 - 304
ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L
DR/DH
P0223-THROTTLE POSITION SENSOR 2 CIRCUIT HIGH (CONTINUED)
3.
(K122) TP SENSOR NO.2 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
Turn the ignition off.
Disconnect the C2 PCM harness connector.
Ignition on, engine not running.
Measure the voltage on the (K122) TP Sensor No.2 Signal circuit at
the Throttle Body harness connector.
Is the voltage above 0 volts?
Yes
>> Repair the short to battery voltage in the (K122) TP Sen-
sor No.2 Signal circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Go To 4
4.
(K122) TP SENSOR NO.2 SIGNAL CIRCUIT SHORTED TO (F855) 5-VOLT SUPPLY CIRCUIT
Measure the resistance between the (K122) TP Sensor No.2 Signal
circuit and the (F855) 5-volt Supply circuit at the Throttle Body harness
connector.
Is the resistance below 100 ohms?
Yes
>> Repair the short between the (K122) TP Sensor No.2 Sig-
nal circuit and the (F855) 5-volt Supply circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Go To 5
DR/DH
ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L
9 - 305
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