Dodge Ram Truck 1500-2500-3500. Manual — part 1119

P2121-PPS CONFORMANCE ERROR (CONTINUED)

12.

RETURN CIRCUIT SHORTED TO OTHER CIRCUITS

Measure the resistance between the APPS 1 return circuit at the ECM
connector and all other circuits in the ECM connector.

Yes

>> Go To 13

No

>> Repair the return circuit shorted to other circuits.

Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

13.

OPEN SIGNAL CIRCUIT

Measure the resistance of the APPS 2 signal circuit between the
APPS sensor connector and the ECM connector.

Yes

>> Go To 14

No

>> Repair or Replace the harness.

Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

9 - 1398

ENGINE - ELECTRICAL DIAGNOSTICS - DIESEL

DR/DH

P2121-PPS CONFORMANCE ERROR (CONTINUED)

14.

OPEN SUPPLY CIRCUIT

Measure the resistance of the APPS 2 supply circuit between the
APPS sensor connector and the ECM connector.

Is the resistance less than 10 ohms?

Yes

>> Go To 15

No

>> Repair or replace the open harness.

Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

15.

SIGNAL CIRCUIT SHORTED TO GROUND

Measure the resistance between the APPS 2 signal circuit at the sen-
sor connector and battery negative.

Is the resistance greater than 100 K ohms?

Yes

>> Go To 16

No

>> Repair the shorted harness.

Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

DR/DH

ENGINE - ELECTRICAL DIAGNOSTICS - DIESEL

9 - 1399

P2121-PPS CONFORMANCE ERROR (CONTINUED)

16.

SIGNAL CIRCUIT SHORTED TO OTHER CIRCUITS

Measure the resistance between the APPS 2 signal circuit at the ECM
connector and all other circuits in the ECM connector.

Is the resistance greater than 100 K ohms?

Yes

>> Go To 17

No

>> Repair the shorted signal circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

17.

SUPPLY CIRCUIT SHORTED TO GROUND

Measure the resistance between the APPS 2 supply circuit at the sen-
sor connector and battery negative.

Is the resistance greater than 100 K ohms?

Yes

>> Go To 18

No

>> Repair the Supply circuit shorted to ground.

Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

9 - 1400

ENGINE - ELECTRICAL DIAGNOSTICS - DIESEL

DR/DH

P2121-PPS CONFORMANCE ERROR (CONTINUED)

18.

SUPPLY CIRCUIT SHORTED TO OTHER CIRCUITS

Measure the resistance between the APPS 2 supply circuit at the ECM
connector and all other circuits in the ECM connector.

Is the resistance greater than 100 K ohms?

Yes

>> Go To 19

No

>> Repair the supply circuit shorted to other circuits.

Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

19.

RETURN CIRCUIT OPEN

Measure the resistance on the APPS 2 return circuit between the sen-
sor connector and the ECM connector.

Is the resistance less than 10 ohms?

Yes

>> Go To 20

No

>> Repair the open return circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 1
(DIESEL). (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES/ENGINE CONTROL MODULE - DIAG-
NOSIS AND TESTING)

DR/DH

ENGINE - ELECTRICAL DIAGNOSTICS - DIESEL

9 - 1401