DODGE RAM SRT-10 2006 Service Repair Manual

3.THROTTLE POSITION SENSOR
Turn the ignition off.
Connect the C2 PCM harness connector.
Ignition on, engine not running.
With a scan tool, monitor the TP Sensor No.1 and No.2 voltage.
Connect a jumper wire between the (K922) Sensor Return circuit and
the (K22) TP Sensor No.1 Signal circuit.
TP Sensor No.1 voltage should change from approximately 4.5 volts to
0.5 of a volt?
For TP Sensor No.2, connect a jumper wire between (F855) 5-volt sup-
ply circuit and the (K122) TP Sensor No.2 signal circuit.
TP Sensor No.2 voltage should change from approximately 0 volts to
5.0 volts?
Isthevoltagereadingwithinthelistedspecificationwiththe
jumper wire installed?
Ye s>>
Replace the Throttle Body Assembly.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 4
NOTE: Remove the jumper wire before continuing.

4.EXCESSIVE RESISTANCE IN THE (K22) TP SENSOR NO.1 OR (K122) TP SENSOR NO.2 SIGNAL CIRCUIT
Turn the ignition off.
Disconnect the C2 PCM harness connector.
CAUTION: Do not probe the PCM harness connectors. Probing the
PCM harness connectors will damage the PCM terminals resulting
in poor terminal to pin connection. Install Miller Special Tool #8815
to perform diagnosis.
Measure the resistance of the (K22) TP Sensor No.1 Signal circuit from
the Throttle Body harness connector to the appropriate terminal of spe-
cial tool #8815.Measure the resistance of the (K122) TP Sensor No.2
Signal circuit from the Throttle Body harness connector to the appropri-
ate terminal of special tool #8815.
Is the resistance below 5.0 ohms for each circuit?
Ye s>>
Go To 5
No>>
Repair the excessive resistance in the (K22) TP Sensor
No.1 or (K122) TP Sensor No.2 Signal circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)

5.(K22) TP SENSOR NO.1 OR (K122) TP SENSOR NO.1 SIGNAL CIRCUIT SHORTED TO GROUND
Measure the resistance between ground and the (K22) TP Sensor No.1
Signal circuit and the (K122) TP Sensor No.2 Signal circuit at the Throt-
tle Body harness connector.
Is the resistance below 100 ohms for either circuit?
Ye s>>
Repair the short to ground in the (K22) TP No.1 Signal or
(K122) TP No.2 Signal circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 6

6.EXCESSIVE RESISTANCE IN THE (F855) 5-VOLT SUPPLY CIRCUIT
Measure the resistance of the (F855) 5-volt Supply circuit from the
Throttle Body harness connector to the appropriate terminal of special
tool #8815.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 7
No>>
Repair the excessive resistance in the (F855) 5-volt Supply
circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
7.(F855) 5-VOLT SUPPLY SHORTED TO GROUND
Measure the resistance between ground and the (F855) 5-volt Supply
circuit at the Throttle Body harness connector.
Istheresistancebelow100ohms?
Ye s>>
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 8

8.EXCESSIVE RESISTANCE IN THE (K922) SENSOR RETURN CIRCUIT
CAUTION: Do not probe the PCM harness connectors. Probing the
PCM harness connectors will damage the PCM terminals resulting
in poor terminal to pin connection. Install Miller Special Tool #8815
to perform diagnosis.
Measure the resistance of the (K922) Sensor Return circuit from the
Throttle Body harness connector to the appropriate terminal of special
tool #8815.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 9
No>>
Repair the excessive resistance in the (K922) Sensor
Return circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
9.(K22) TP SENSOR NO.1 SIGNAL SHORTED TO (K122) TP SENSOR NO.2 SIGNAL
Measure the resistance between the (K22) TP Sensor No.1 Signal cir-
cuit and the (K122) TP Sensor No.2 Signal circuit at the Throttle Body
harness connector.
Is the resistance below 5.0 ohms?
Ye s>>
Repair the short between the (K122) TP Sensor No.2 Signal
circuit and the (K22) TP Sensor No.1 Signal circuit.
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?
Ye s>>
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 a scan tool, perform the Throttle Follower Test and monitor the TP Sensor No.1 or No.2 voltage.
Slowly press the throttle pedal down.
The voltage for TP Sensor No.1 should start at approximately 0.8 of a volt and increase to above 4.2 volts.
The voltage for TP Sensor No.2 should start at approximately 4.2 volts and decrease to approximately 0.8 of a volt.
Is the voltage within the range of the listed specification for the appropriate Sensor?
Ye s>>
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, use a scan tool and select the ETC RELEARN function.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

P2138-ACCELERATOR PEDAL POSITION SENSOR 1/2 CORRELATION
For a complete wiring diagramRefer to Section 8W.

When Monitored:
With the ignition on and no APPS No.1 and APPS No.2 DTC present.
Set Condition:
APPS values No.1 and No.2 are not coherent. Idle is additionally forced when the brake pedal is pressed or
failed. Acceleration rate and Engine output are limited. One trip fault and the code will set within 5 seconds.
ETC light is flashing.
Possible Causes
EXCESSIVE RESISTANCE IN THE (F855) 5-VOLT SUPPLY CIRCUIT
EXCESSIVE RESISTANCE IN THE (F856) 5-VOLT SUPPLY CIRCUIT
EXCESSIVE RESISTANCE IN THE (K167) SENSOR NO.1 RETURN CIRCUIT
EXCESSIVE RESISTANCE IN THE (K400) SENSOR NO.2 RETURN CIRCUIT
EXCESSIVE RESISTANCE IN THE (K23) APP SENSOR NO.1 SIGNAL CIRCUIT
EXCESSIVE RESISTANCE IN THE (K29) APP SENSOR NO.2 SIGNAL CIRCUIT
APP SENSOR
PCM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).
Diagnostic Test
1.ACTIVE DTC
Ignition on, engine not running.
With a scan tool, read DTCs.
NOTE: Repair any other 5-Volt Supply or APPS High and Low DTCs before diagnosing P2138.
Is the DTC active at this time?
Ye s>>
Go To 2
No>>
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

2.EXCESSIVE RESISTANCE IN THE (K23) APPS NO.1 SIGNAL CIRCUIT
CAUTION: Do not probe the PCM harness connectors. Probing the
PCM harness connectors will damage the PCM terminals resulting
in poor terminal to pin connection. Install Miller Special Tool #8815
to perform diagnosis.
Turn the ignition off.
Disconnect the C3 PCM harness connector.
Disconnect the APP Sensor harness connector.
Measure the resistance of (K23) APP Sensor No.1 Signal circuit from
the APP Sensor harness connector to the appropriate terminals of spe-
cial tool #8815.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 3
No>>
Repair the excessive resistance in the (K23) APP Sensor
No.1 Signal circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
3.EXCESSIVE RESISTANCE IN THE (K29) APPS NO.2 SIGNAL CIRCUIT
Measure the resistance of (K29) APPS No.2 Signal circuit from the APP
Sensor harness connector to the appropriate terminals of special tool
#8815.
Is the resistance below 5.0 ohms?
Ye s>>
Go To 4
No>>
Repair the excessive resistance in the (K29) APP Sensor
No.2 Signal circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)

4.EXCESSIVE RESISTANCE IN THE (F855) 5-VOLT SUPPLY CIRCUIT
Disconnect the C2 PCM harness connector.
Measure the resistance of the (F855) 5-volt Supply circuit from the APP
Sensor harness connector to the appropriate terminal of special tool
#8815.
Is the resistance above 5.0 ohms?
Ye s>>
Repair the excessive resistance in the (F855) 5-volt Supply
circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 5
5.EXCESSIVE RESISTANCE IN THE (F856) 5-VOLT SUPPLY CIRCUIT
Disconnect the C1 PCM harness connector.
Measure the resistance of the (F856) 5-volt Supply circuit from the APP
Sensor harness connector to the appropriate terminal of special tool
#8815.
Is the resistance above 5.0 ohms?
Ye s>>
Repair the excessive resistance in the (F856) 5-volt Supply
circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to
9 - ENGINE - STANDARD PROCEDURE)
No>>
Go To 6