Dodge Ram Truck 1500-2500-3500. Manual — part 992
P2128-ACCELERATOR PEDAL POSITION SENSOR 2 CIRCUIT HIGH (CONTINUED)
3.
(K29) APP SENSOR NO.2 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
Turn the ignition off.
Disconnect the C3 PCM harness connector.
Ignition on, engine not running.
Measure the voltage on the (K29) APP Sensor No.2 Signal circuit in
the APP Sensor harness connector.
Is the voltage above 0 volts?
Yes
>> Repair the short to battery voltage in the (K29) APP Sen-
sor No.2 Signal circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Go To 4
4.
(K29) APPS NO.2 SIGNAL CIRCUIT SHORTED TO THE (F856) 5-VOLT SUPPLY CIRCUIT
Turn the ignition off.
Measure the resistance between the (K29) APP Sensor No.2 Signal
circuit and the (F856) 5-volt Supply circuit in the APP Sensor harness
connector.
Is the resistance below 10 ohms?
Yes
>> Repair the short between the (K29) APP Sensor No.2 Sig-
nal circuit and the (F856) 5-volt Supply circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Go To 5
9 - 890
ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L
DR/DH
P2128-ACCELERATOR PEDAL POSITION SENSOR 2 CIRCUIT HIGH (CONTINUED)
5.
(K29) APPS NO.2 SIGNAL CIRCUIT SHORTED TO THE (F855) 5-VOLT SUPPLY CIRCUIT
Measure the resistance between the (K29) APP Sensor No.2 Signal
circuit and the (F855) 5-volt Supply circuit in the APP Sensor harness
connector.
Is the resistance below 10 ohms?
Yes
>> Repair the short between the (K29) APP 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 6
6.
(K400) APP SENSOR NO.2 RETURN CIRCUIT OPEN
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 (K400) APP Sensor No.2 Return circuit
from the APP Sensor harness connector to the appropriate terminal of
special tool #8815.
Is the resistance below 5.0 ohms?
Yes
>> Go To 7
No
>> Repair the open in the (K400) APP Sensor No.2 Return
circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)
DR/DH
ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L
9 - 891
P2128-ACCELERATOR PEDAL POSITION SENSOR 2 CIRCUIT HIGH (CONTINUED)
7.
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)
8.
APP SENSOR NO.2 SWEEP
Ignition on, engine not running.
With a scan tool, monitor the Accelerator Pedal Position Sensor voltage.
Slowly press the Accelerator Pedal down.
Does voltage start at approximately 0.22 of a volt and go above 2.31 volts with a smooth transition?
Yes
>> Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
No
>> Replace the APP Sensor Assembly per Service Information. After installation is complete, use a scan
tool and select the ETC RELEARN function to relearn the APPS values.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)
9 - 892
ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L
DR/DH
P2135-THROTTLE POSITION SENSOR 1/2 CORRELATION
DR/DH
ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L
9 - 893
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст