Communication - Non-Dtc Based Diagnostics: Other RAM Cab & Chassis 3500 HD

WHEN MONITORED

When the scan tool queries the Totally Integrated Power Module (TIPM).

SET CONDITION

The scan tool has detected an open condition on both Diagnostic CAN C circuits.

POSSIBLE CAUSES

Scheme 3

Scheme 4

1. CHECK THE STATUS OF THE ERROR MESSAGE NOTE: Make sure the vehicle being tested is a CAN BUS VEHICLE. If not, false error messages may be displayed. NOTE: Make sure the scan tool is updated to the latest software. With the scan tool, record the error message. Disconnect the scan tool from the DLC. Cycle the ignition from on to off three times. Reconnect the scan tool. Turn the ignition on. Does the scan tool display this same error message? Yes Go To 2 . No The conditions that caused this error message to set are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
2. (D72) DIAGNOSTIC CAN C (+) CIRCUIT OPEN Turn the ignition off. Disconnect the TIPM C7 harness connector. Disconnect the scan tool from the DLC. NOTE: Check the connectors at both the DLC and the TIPM. Measure the resistance of the (D72) Diagnostic CAN C (+) circuit between the TIPM C7 harness connector and the DLC. Is the resistance below 5.0 Ohms? Yes Go To 3 . No Repair the open in the (D72) Diagnostic CAN C (+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
3. (D71) DIAGNOSTIC CAN C (-) CIRCUIT OPEN Measure the resistance of the (D71) Diagnostic CAN C (-) circuit between the TIPM C7 harness connector and the DLC. Is the resistance below 5.0 Ohms? Yes Inspect the wiring and connectors for damage or shorted circuits. If OK, replace the TIPM in accordance with the Service Information. Refer to «MODULE, TOTALLY INTEGRATED POWER (TIPM), REMOVAL»(ref-476543-S26517536562012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D71) Diagnostic CAN C (-) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

When the scan tool queries the Totally Integrated Power Module (TIPM).

The scan tool has detected a shorted high condition on either or both Diagnostic CAN C circuits.

Scheme 5

1. CHECK THE STATUS OF THE ERROR MESSAGE NOTE: Make sure the vehicle being tested is a CAN BUS VEHICLE. If not, false error messages may be displayed. NOTE: Make sure the scan tool is updated to the latest software. With the scan tool, record the error message. Disconnect the scan tool from the DLC. Cycle the ignition from on to off three times. Reconnect the scan tool. Turn the ignition on. Does the scan tool display this same error message? Yes Go To 2 . No The conditions that caused this error message to set are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
2. DIAGNOSTIC CAN C CIRCUITS SHORTED TO VOLTAGE Turn the ignition off. Disconnect the TIPM C7 harness connector. Disconnect the scan tool from the DLC. Turn the ignition on. Measure the voltage of the Diagnostic CAN C circuits. Is the voltage above 6.0 volts for either circuit? Yes Repair the short to voltage in the Diagnostic CAN C circuits. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace the TIPM in accordance with the Service Information. Refer to «MODULE, TOTALLY INTEGRATED POWER (TIPM), REMOVAL»(ref-476543-S26517536562012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

When the scan tool queries the Totally Integrated Power Module (TIPM).

The scan tool has detected a shorted low condition on the (D72) Diagnostic CAN C (+) circuit.

Scheme 6

1. CHECK THE STATUS OF THE ERROR MESSAGE NOTE: Make sure the vehicle being tested is a CAN BUS VEHICLE. If not, false error messages may be displayed. NOTE: Make sure the scan tool is updated to the latest software. With the scan tool, record the error message. Disconnect the scan tool from the DLC. Cycle the ignition from on to off three times. Reconnect the scan tool. Turn the ignition on. Does the scan tool display this same error message? Yes Go To 2 . No The conditions that caused this error message to set are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
2. (D72) DIAGNOSTIC CAN C (+) CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the TIPM C7 harness connector. Disconnect the scan tool from the DLC. Measure the resistance between ground and the (D72) Diagnostic CAN C (+) circuit. Is the resistance below 100.0 Ohms? Yes Repair the short to ground in the (D72) Diagnostic CAN C (+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace the TIPM in accordance with the Service Information. Refer to «MODULE, TOTALLY INTEGRATED POWER (TIPM), REMOVAL»(ref-476543-S26517536562012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

When the scan tool queries the Totally Integrated Power Module (TIPM).

The scan tool has detected an open condition on the (D72) Diagnostic CAN C (+) circuit.

Scheme 7

1. CHECK THE STATUS OF THE ERROR MESSAGE NOTE: Make sure the vehicle being tested is a CAN BUS VEHICLE. If not, false error messages may be displayed. NOTE: Make sure the scan tool is updated to the latest software. With the scan tool, record the error message. Disconnect the scan tool from the DLC. Cycle the ignition from on to off three times. Reconnect the scan tool. Turn the ignition on. Does the scan tool display this same error message? Yes Go To 2 . No The conditions that caused this error message to set are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
2. (D72) DIAGNOSTIC CAN C (+) CIRCUIT OPEN Turn the ignition off. Disconnect the TIPM C7 harness connector. Disconnect the scan tool from the DLC. Measure the resistance of the (D72) Diagnostic CAN C (+) circuit between the TIPM C7 harness connector and the DLC. Is the resistance below 5.0 Ohms? Yes Inspect the wiring and connectors for damage or shorted circuits. If OK, replace the TIPM in accordance with the Service Information. Refer to «MODULE, TOTALLY INTEGRATED POWER (TIPM), REMOVAL»(ref-476543-S26517536562012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D72) Diagnostic CAN C (+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

When the scan tool queries the Totally Integrated Power Module (TIPM).

The scan tool has detected a shorted low condition on the (D71) Diagnostic CAN C (-) circuit.

Scheme 8

1. CHECK THE STATUS OF THE ERROR MESSAGE NOTE: Make sure the vehicle being tested is a CAN BUS VEHICLE. If not, false error messages may be displayed. NOTE: Make sure the scan tool is updated to the latest software. With the scan tool, record the error message. Disconnect the scan tool from the DLC. Cycle the ignition from on to off three times. Reconnect the scan tool. Turn the ignition on. Does the scan tool display this same error message? Yes Go To 2 . No The conditions that caused this error message to set are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
2. (D71) DIAGNOSTIC CAN C (-) CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the TIPM C7 harness connector. Disconnect the scan tool from the DLC. Measure the resistance between ground and the (D71) Diagnostic CAN C (-) circuit. Is the resistance below 100.0 Ohms? Yes Repair the short to ground in the (D71) Diagnostic CAN C (-) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace the TIPM in accordance with the Service Information. Refer to «MODULE, TOTALLY INTEGRATED POWER (TIPM), REMOVAL»(ref-476543-S26517536562012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

When the scan tool queries the Totally Integrated Power Module (TIPM).

The scan tool has detected an open condition on the (D71) Diagnostic CAN C (-) circuit.

Scheme 9

1. CHECK THE STATUS OF THE ERROR MESSAGE NOTE: Make sure the vehicle being tested is a CAN BUS VEHICLE. If not, false error messages may be displayed. NOTE: Make sure the scan tool is updated to the latest software. With the scan tool, record the error message. Disconnect the scan tool from the DLC. Cycle the ignition from on to off three times. Reconnect the scan tool. Turn the ignition on. Does the scan tool display this same error message? Yes Go To 2 . No The conditions that caused this error message to set are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
2. (D71) DIAGNOSTIC CAN C (-) CIRCUIT OPEN Turn the ignition off. Disconnect the TIPM C7 harness connector. Disconnect the scan tool from the DLC. Measure the resistance of the (D71) Diagnostic CAN C (-) circuit between the TIPM C7 harness connector and the DLC. Is the resistance below 5.0 Ohms? Yes Inspect the wiring and connectors for damage or shorted circuits. If OK, replace the TIPM in accordance with the Service Information. Refer to «MODULE, TOTALLY INTEGRATED POWER (TIPM), REMOVAL»(ref-476543-S26517536562012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D71) Diagnostic CAN C (-) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

When the scan tool queries the Totally Integrated Power Module (TIPM).

The scan tool has detected a shorted together condition on the Diagnostic CAN C circuits.

Scheme 10

1. CHECK THE STATUS OF THE ERROR MESSAGE NOTE: Make sure the vehicle being tested is a CAN BUS VEHICLE. If not, false error messages may be displayed. NOTE: Make sure the scan tool is updated to the latest software. With the scan tool, record the error message. Disconnect the scan tool from the DLC. Cycle the ignition from on to off three times. Reconnect the scan tool. Turn the ignition on. Does the scan tool display this same error message? Yes Go To 2 . No The conditions that caused this error message to set are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
2. (D72) DIAGNOSTIC CAN C (+) CIRCUIT SHORTED TO (D71) DIAGNOSTIC CAN C (-) CIRCUIT Turn the ignition off. Disconnect the TIPM C7 harness connector. Disconnect the scan tool from the DLC. Measure the resistance between the (D72) Diagnostic CAN C (+) circuit and the (D71) Diagnostic CAN C (-) circuit. Is the resistance below 100.0 Ohms? Yes Repair the short between the (D72) Diagnostic CAN C (+) and (D71) Diagnostic CAN C (-) circuits. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Inspect the wiring and connectors for damage or shorted circuits. If OK, replace the TIPM in accordance with the Service Information. Refer to «MODULE, TOTALLY INTEGRATED POWER (TIPM), REMOVAL»(ref-476543-S26517536562012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

Scheme 11

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 12

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Scheme 16

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN C hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. (A107) (A111) FUSED B(+) CIRCUIT OPEN OR SHORTED Turn the ignition off. Disconnect the Antilock Brake Module harness connector. Using a 12-volt test light connected to ground, check the (A107) and (A111) Fused B(+) circuits. Does the test light illuminate brightly for each circuit? Yes Go To 3 . No Repair the open or short in the (A107) or (A111) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476582-S25657414762012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476581-S01573843452012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the ABS VERIFICATION TEST.
3. (Z905) GROUND CIRCUIT OPEN Using a 12-volt test light connected to 12-volts, check the (Z905) Ground circuits. Does the test light illuminate brightly for each circuit? Yes Go To 4 . No Repair the open in the (Z905) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476582-S25657414762012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476581-S01573843452012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the ABS VERIFICATION TEST.
4. (F941) IGNITION RUN/START CONTROL OUTPUT CIRCUIT OPEN OR SHORTED Turn the ignition on. Using a 12-volt test light connected to ground, check the (F941) Ignition Run/Start Control Output circuit. Does the test light illuminate brightly? Yes Go To 5 . No Repair the open or short in the (F941) Ignition Run/Start Control Output circuit. Refer to «STANDARD PROCEDURE»(ref-476582-S25657414762012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476581-S01573843452012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the ABS VERIFICATION TEST.
5. (D52) CAN C BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the TIPM C7 harness connector. Measure the resistance of the (D52) CAN C Bus (+) circuit between the TIPM C7 harness connector and the Antilock Brake Module connector. Is resistance below 5.0 Ohms? Yes Go To 6 . No Repair the open in the (D52) CAN C Bus (+) circuit. Refer to «STANDARD PROCEDURE»(ref-476582-S25657414762012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476581-S01573843452012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the ABS VERIFICATION TEST.
6. (D51) CAN C BUS (-) CIRCUIT OPEN Measure the resistance of the (D51) CAN C Bus (-) circuit between the TIPM C1 harness connector and the Antilock Brake Module connector. Is resistance below 5.0 Ohms? Yes Replace the Antilock Brake Module in accordance with the Service Information. Refer to «MODULE, ANTI-LOCK BRAKE SYSTEM, REMOVAL»(ref-476533-S42742154772012060400000) . Refer to «STANDARD PROCEDURE»(ref-476582-S25657414762012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476581-S01573843452012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the ABS VERIFICATION TEST. No Repair the open in the (D51) CAN C Bus (-) circuit. Refer to «STANDARD PROCEDURE»(ref-476582-S25657414762012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476581-S01573843452012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the ABS VERIFICATION TEST.

Scheme 17

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 18

Scheme 19

Scheme 20

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A116) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the Radio Amplifier C1 harness connector. Using a 12-volt test light connected to ground, check the (A116) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (A116) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
3. CHECK THE (Z912) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z912) ground circuit. Does the test light illuminate brightly for each circuit? Yes Go To 4 . No Repair the open in the (Z912) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
4. CHECK THE (D265) AND (D264) CAN INTERIOR BUS (125K) CIRCUITS FOR AN OPEN Measure the resistance of the (D264) CAN Interior Bus (125K) (-) circuit between the TIPM C7 harness connector and the Radio Amplifier C1 harness connector. Measure the resistance of the (D265) CAN Interior Bus (125K) (+) circuit between the TIPM C7 harness connector and the Radio Amplifier C1 harness connector. Are the resistances below 5.0 Ohms? Yes Replace the Radio Amplifier in accordance with the Service Information. Refer to «AMPLIFIER, REMOVAL»(ref-476524-S12352798352012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D265) or (D264) CAN Interior Bus (125K) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

Scheme 21

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 22

Scheme 23

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Scheme 25

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A909) AND (A412) FUSED B(+) CIRCUITS FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the Cluster C1 and C3 harness connectors. Using a 12-volt test light connected to ground, check the (A909) and (A412) Fused B(+) circuit. Does the test light illuminate brightly for each circuit? Yes Go To 3 . No Repair the open or short in the Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
3. CHECK THE (Z911) GROUND CIRCUITS FOR AN OPEN Disconnect the Cluster C2 harness connector. Using a 12-volt test light connected to 12-volts, check the (Z911) Ground circuits. Does the test light illuminate brightly for each circuit? Yes Go To 4 . No Repair the open in the (Z911) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
4. CHECK THE (F943) FUSED IGNITION RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT Turn the ignition on. Using a 12-volt test light connected to ground, check the (F943) Fused Ignition Run/Start Control Output circuit. Does the test light illuminate brightly? Yes Go To 5 . No Repair the open or short in the (F943) Fused Ignition Run/Start Control Output circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
5. CHECK THE (D265) AND (D264) CAN INTERIOR BUS (125K) CIRCUITS FOR AN OPEN Measure the resistance of the (D264) CAN Interior Bus (125K) (-) circuit between the TIPM C7 harness connector and the Cluster C3 harness connector. Measure the resistance of the (D265) CAN Interior Bus (125K) (+) circuit between the TIPM C7 harness connector and the Cluster C3 harness connector. Are the resistances below 5.0 Ohms? Yes Replace the Cluster in accordance with the Service Information. Refer to «REMOVAL»(ref-476514-S25394978592012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D265) or (D264) CAN Interior Bus (125K) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

Scheme 26

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 27

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Scheme 29

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A215) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the Driver Door Module C3 harness connector. Using a 12-volt test light connected to ground, check the (A215) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (A215) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
3. CHECK THE (Z905) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z905) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z905) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
4. CHECK THE (D265) AND (D264) CAN INTERIOR BUS (125K) CIRCUITS FOR AN OPEN Measure the resistance of the (D264) CAN Interior Bus (125K) (-) circuit between the TIPM C7 harness connector and the Driver Door Module C3 harness connector. Measure the resistance of the (D265) CAN Interior Bus (125K) (+) circuit between the TIPM C7 harness connector and the Driver Door Module C3 harness connector. Are the resistances below 5.0 Ohms? Yes Replace the Driver Door Module in accordance with the Service Information. Refer to «MODULE, DOOR, REMOVAL»(ref-476533-S36948627272012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D265) or (D264) CAN Interior Bus (125K) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

Scheme 30

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 31

Scheme 32

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Scheme 34

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A104) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the Drivetrain Control Module C1 and C2 harness connectors. Using a 12-volt test light connected to ground, check the (A104) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (A104) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476585-S42667394152012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476583-S29992450532012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the DTCM VERIFICATION TEST.
3. CHECK THE (Z908) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z908) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z908) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476585-S42667394152012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476583-S29992450532012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the DTCM VERIFICATION TEST.
4. CHECK THE (F942) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT FOR AN OPEN OR SHORT Turn the ignition on. Using a 12-volt test light connected to ground, check the (F942) Fused Ignition Switch Output (Run-Start) circuit. Does the test light illuminate brightly? Yes Go To 5 . No Repair the open or short in the (F942) Fused Ignition Switch Output (Run-Start) circuit. Refer to «STANDARD PROCEDURE»(ref-476585-S42667394152012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476583-S29992450532012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the DTCM VERIFICATION TEST.
5. CHECK THE (D51) AND (D52) CAN C BUS CIRCUITS FOR AN OPEN Turn the ignition off. Disconnect the TIPM C7 harness connector. Measure the resistance of the (D52) CAN C Bus (+) circuit between the TIPM C7 harness connector and the DTCM C1 harness connector. Measure the resistance of the (D51) CAN C Bus (-) circuit between the TIPM C7 harness connector and the DTCM C1 harness connector. Are the resistances below 5.0 Ohms? Yes Replace the Drivetrain Control Module in accordance with the Service Information. Refer to «MODULE, DRIVETRAIN CONTROL, REMOVAL»(ref-476533-S26061413582012060400000) . Refer to «STANDARD PROCEDURE»(ref-476585-S42667394152012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476583-S29992450532012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the DTCM VERIFICATION TEST. No Repair the open in the (D52) or (D51) CAN C Bus circuit. Refer to «STANDARD PROCEDURE»(ref-476585-S42667394152012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476583-S29992450532012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the DTCM VERIFICATION TEST.

Scheme 35

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 36

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Scheme 40

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. (A959) FUSED B(+) CIRCUIT OPEN OR SHORTED Turn the ignition off. Disconnect the Final Drive Control Module harness connector. Using a 12-volt test light connected to ground, check the (A959) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short (A959) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476586-S02431388282012060400000) and perform the FDCM VERIFICATION TEST.
3. (Z904) GROUND CIRCUIT OPEN Using a 12-volt test light connected to 12-volts, check the (Z904) Ground circuits. Does the test light illuminate brightly for each circuit? Yes Go To 4 . No Repair the open in the (Z904) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476586-S02431388282012060400000) and perform the FDCM VERIFICATION TEST.
4. (F943) FUSED IGNITION SWITCH OUTPUT (RUN-START) CIRCUIT OPEN OR SHORTED Turn the ignition on. Using a 12-volt test light connected to ground, check the (F943) Fused Ignition Switch Output (Run-Start) circuit. Does the test light illuminate brightly? Yes Go To 5 . No Repair the open or short in the (F943) Fused Ignition Switch Output (Run-Start) circuit. Refer to «STANDARD PROCEDURE»(ref-476586-S02431388282012060400000) and perform the FDCM VERIFICATION TEST.
5. (D52) CAN C BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the TIPM C7 harness connector. Measure the resistance of the (D52) CAN C Bus (+) circuit between the TIPM C7 harness connector and the FDCM harness connector. Is resistance below 5.0 Ohms? Yes Go To 6 . No Repair the open in the (D52) CAN C Bus (+) circuit. Refer to «STANDARD PROCEDURE»(ref-476586-S02431388282012060400000) and perform the FDCM VERIFICATION TEST.
6. (D51) CAN C BUS (-) CIRCUIT OPEN Measure the resistance of the (D51) CAN C Bus (-) circuit between the TIPM C7 harness connector and the FDCM harness connector. Is resistance below 5.0 Ohms? Yes Replace the FDCM in accordance with the Service Information. Refer to «ACTUATOR, STABILIZER BAR, REMOVAL»(ref-476491-S42023480312012060400000) . Refer to «STANDARD PROCEDURE»(ref-476586-S02431388282012060400000) and perform the FDCM VERIFICATION TEST. No Repair the open in the (D51) CAN C Bus (-) circuit. Refer to «STANDARD PROCEDURE»(ref-476586-S02431388282012060400000) and perform the FDCM VERIFICATION TEST.

Scheme 41

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 42

Scheme 43

Scheme 44

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A413) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the Hands Free Module harness connector. Using a 12-volt test light connected to ground, check the (A413) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (A413) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
3. CHECK THE (Z912) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z912) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z912) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
4. CHECK THE (D265) AND (D264) CAN INTERIOR BUS (125K) CIRCUITS FOR AN OPEN Measure the resistance of the (D264) CAN Interior Bus (125K) (-) circuit between the TIPM C7 harness connector and the Hands Free Module harness connector. Measure the resistance of the (D265) CAN Interior Bus (125K) (+) circuit between the TIPM C7 harness connector and the Hands Free Module harness connector. Are the resistances below 5.0 Ohms? Yes Replace the Hands Free Module in accordance with the Service Information. Refer to «MODULE, HANDS FREE (HFM), REMOVAL»(ref-476557-S18369064932012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D265) or (D264) CAN Interior Bus (125K) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

Scheme 45

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 46

Scheme 47

Scheme 48

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (F930) FUSED IGNITION RUN CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the Heated Seat Module C1 harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, check the (F930) Fused Ignition Run Control Output circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (F930) Fused Ignition Run Control Output circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
3. CHECK THE (Z909) GROUND CIRCUIT FOR AN OPEN Turn the ignition off. Using a 12-volt test light connected to 12-volts, check the (Z909) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z909) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
4. CHECK THE (D265) AND (D264) CAN INTERIOR BUS (125K) CIRCUITS FOR AN OPEN Disconnect the TIPM C7 harness connector. Measure the resistance of the (D264) CAN Interior Bus (125K) (-) circuit between the TIPM C7 harness connector and the Heated Seat Module C1 harness connector. Measure the resistance of the (D265) CAN Interior Bus (125K) (+) circuit between the TIPM C7 harness connector and the Heated Seat Module C1 harness connector. Are the resistances below 5.0 Ohms? Yes Replace the Heated Seat Module in accordance with the Service Information. Refer to «MODULE, HEATED SEAT, REMOVAL»(ref-476533-S41518807242012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D265) or (D264) CAN Interior Bus (125K) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

Scheme 49

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 50

Scheme 51

Scheme 52

Scheme 53

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A417) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the A/C Heater Control harness connector. Using a 12-volt test light connected to ground, check the (A417) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (A417) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
3. CHECK THE (Z911) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z911) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z911) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
4. CHECK THE (F921) FUSED RUN RELAY OUTPUT CIRCUIT FOR AN OPEN OR SHORT Turn the ignition on. Using a 12-volt test light connected to ground, check the (F921) Fused Run Relay Output circuit. Does the test light illuminate brightly? Yes Go To 5 . No Repair the open or short in the (F921) Fused Run Relay Output circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
5. CHECK THE (D265) AND (D264) CAN INTERIOR BUS (125K) CIRCUITS FOR AN OPEN Measure the resistance of the (D264) CAN Interior Bus (125K) (-) circuit between the TIPM C7 harness connector and the A/C Heater Control harness connector. Measure the resistance of the (D265) CAN Interior Bus (125K) (+) circuit between the TIPM C7 harness connector and the A/C Heater Control harness connector. Are the resistances below 5.0 Ohms? Yes Replace the A/C Heater Control Module in accordance with the Service Information. Refer to «CONTROL, A/C AND HEATER, REMOVAL»(ref-476508-S31564073372012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D265) or (D264) CAN Interior Bus (125K) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

Scheme 54

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 55

Scheme 56

Scheme 57

Scheme 58

Scheme 59

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. (A115) FUSED B(+) CIRCUIT OPEN OR SHORTED Turn the ignition off. Disconnect the ITBM C1 harness connector. Using a 12-volt test light connected to ground, check the (A115) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (A115) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476589-S38532677472012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476588-S09310122832012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the ITBM VERIFICATION TEST.
3. (Z905) GROUND CIRCUIT OPEN Using a 12-volt test light connected to 12-volts, check the (Z905) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z905) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476589-S38532677472012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476588-S09310122832012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the ITBM VERIFICATION TEST.
4. (F943) FUSED IGNITION RUN/START CONTROL OUTPUT CIRCUIT OPEN OR SHORTED Turn the ignition on. Using a 12-volt test light connected to ground, check the (F943) Fused Ignition Run/Start Control Output circuit. Does the test light illuminate brightly? Yes Go To 5 . No Repair the open or short in the (F943) Fused Ignition Run/Start Control Output circuit. Refer to «STANDARD PROCEDURE»(ref-476589-S38532677472012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476588-S09310122832012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the ITBM VERIFICATION TEST.
5. (D52) CAN C BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the TIPM C7 harness connector. Measure the resistance of the (D52) CAN C Bus (+) circuit between the TIPM C7 harness connector and the ITBM C2 harness connector. Is resistance below 5.0 Ohms? Yes Go To 6 . No Repair the open in the (D52) CAN C Bus (+) circuit. Refer to «STANDARD PROCEDURE»(ref-476589-S38532677472012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476588-S09310122832012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the ITBM VERIFICATION TEST.
6. (D51) CAN C BUS (-) CIRCUIT OPEN Measure the resistance of the (D51) CAN C Bus (-) circuit between the TIPM C7 harness connector and the ITBM C2 harness connector. Is resistance below 5.0 Ohms? Yes Replace the ITBM in accordance with the Service Information. Refer to «MODULE, INTEGRATED TRAILER BRAKE (ITBM), REMOVAL»(ref-476533-S11631635442012060400000) . Refer to «STANDARD PROCEDURE»(ref-476589-S38532677472012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476588-S09310122832012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the ITBM VERIFICATION TEST. No Repair the open in the (D51) CAN C Bus (-) circuit. Refer to «STANDARD PROCEDURE»(ref-476589-S38532677472012060400000) for 1500, 2500 & 3500 or «STANDARD PROCEDURE»(ref-476588-S09310122832012060400000) for 3500 Cab & Chassis, 4500 & 5500 and perform the ITBM VERIFICATION TEST.

Scheme 60

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 61

Scheme 62

Scheme 63

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A907) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the Memory Seat Module C1 harness connector. Using a 12-volt test light connected to ground, check the (A907) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (A907) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
3. CHECK THE (Z909) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z909) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z909) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
4. CHECK THE (D265) AND (D264) CAN INTERIOR BUS (125K) CIRCUITS FOR AN OPEN Disconnect the TIPM C7 harness connector. Measure the resistance of the (D264) CAN Interior Bus (125K) (-) circuit between the TIPM C7 harness connector and the Memory Seat Module C1 harness connector. Measure the resistance of the (D265) CAN Interior Bus (125K) (+) circuit between the TIPM C7 harness connector and the Memory Seat Module C1 harness connector. Are the resistances below 5.0 Ohms? Yes Replace the Memory Seat Module in accordance with the Service Information. Refer to «MODULE, MEMORY, REMOVAL»(ref-476533-S37187044822012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D265) or (D264) CAN Interior Bus (125K) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

Scheme 64

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 65

Scheme 66

Scheme 67

Scheme 68

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (Z913) GROUND CIRCUIT FOR AN OPEN WARNING: To avoid possible serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding. Disconnect the Occupant Restraint Controller Module harness connectors. Connect the SRS Load Tool Adapter (special tool #8443-24, 32-Way Adapter) to the ORC connectors. Measure the resistance between ground and the (Z913) Ground circuit. Is the resistance below 5.0 Ohms? Yes Go To 3 . No Repair the open in the (Z913) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476575-S31447230772012060400000) and perform the RESTRAINTS SYSTEM VERIFICATION TEST.
3. CHECK THE (F100) FUSED IGNITION RUN CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT NOTE: Check the TIPM for any ignition related DTCs before proceeding. If set. Refer to «DIAGNOSIS AND TESTING»(ref-476553-S10470145732012060400000) . WARNING: Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury. Using a 12-volt test light connected to ground, check the (F100) Fused Ignition Run Control Output circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open or short in the (F100) Fused Ignition Run Control Output circuit. Refer to «STANDARD PROCEDURE»(ref-476575-S31447230772012060400000) and perform the RESTRAINTS SYSTEM VERIFICATION TEST.
4. CHECK THE (F201) FUSED IGNITION RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT Using a 12-volt test light connected to ground, check the (F201) Fused Ignition Run/Start Control Output circuit. Does the test light illuminate brightly? Yes Go To 5 . No Repair the open or short in the (F201) Fused Ignition Run/Start Control Output circuit. Refer to «STANDARD PROCEDURE»(ref-476575-S31447230772012060400000) and perform the RESTRAINTS SYSTEM VERIFICATION TEST.
5. CHECK THE (D52) AND (D51) CAN C BUS CIRCUITS FOR AN OPEN Turn the ignition off. Disconnect the TIPM C7 harness connector. Measure the resistance of the (D52) CAN C Bus (+) circuit between the TIPM C7 harness connector and the Occupant Restraint Controller C1 harness connector. Measure the resistance of the (D51) CAN C Bus (-) circuit between the TIPM C7 harness connector and the Occupant Restraint Controller C1 harness connector. Are the resistances below 5.0 Ohms? Yes Replace the Occupant Restraint Controller Module in accordance with the Service Information. Refer to «CONTROLLER, OCCUPANT RESTRAINT, REMOVAL»(ref-476529-S14397433452012060400000) . Refer to «STANDARD PROCEDURE»(ref-476575-S31447230772012060400000) and perform the RESTRAINTS SYSTEM VERIFICATION TEST. No Repair the open in the (D52) or (D51) CAN C Bus circuit. Refer to «STANDARD PROCEDURE»(ref-476575-S31447230772012060400000) and perform the RESTRAINTS SYSTEM VERIFICATION TEST.

Scheme 69

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 70

Scheme 71

Scheme 72

Scheme 73

Scheme 74

Scheme 75

Scheme 76

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A209) FUSED B(+) CIRCUITS FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the PCM C1 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 the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis. Using a 12-volt test light connected to ground, check the (A209) Fused B(+) circuits. Does the test light illuminate brightly for each circuit? Yes Go To 3 . No Repair the open or short in the (A209) Fused B(+) circuit. Refer to «1500 & 2500 - 3.7L, 4.7L & 5.7L - POWERTRAIN VERIFICATION TEST»(ref-476600-S16182020042012060400000) or «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «2500 & 3500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476629-S31319329382012060400000) and perform the POWERTRAIN VERIFICATION TEST.
3. CHECK THE (Z908) GROUND CIRCUITS FOR AN OPEN Disconnect the PCM C4 harness connector. Using a 12-volt test light connected to 12-volts, check the (Z908) Ground circuits in PCM C1 harness connector. Using a 12-volt test light connected to 12-volts, check the (Z908) Ground circuits in PCM C4 harness connector. Does the test light illuminate brightly for each circuit? Yes Go To 4 . No Repair the open in the (Z908) Ground circuit. Refer to «1500 & 2500 - 3.7L, 4.7L & 5.7L - POWERTRAIN VERIFICATION TEST»(ref-476600-S16182020042012060400000) or «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «2500 & 3500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476629-S31319329382012060400000) and perform the POWERTRAIN VERIFICATION TEST.
4. CHECK THE (F202) IGNITION RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT Turn the ignition on. Using a 12-volt test light connected to ground, check the (F202) Ignition Run/Start Control Output circuit. Does the test light illuminate brightly? Yes Go To 5 . No Repair the open or short in the (F202) Ignition Run/Start Control Output circuit. Refer to «1500 & 2500 - 3.7L, 4.7L & 5.7L - POWERTRAIN VERIFICATION TEST»(ref-476600-S16182020042012060400000) or «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «2500 & 3500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476629-S31319329382012060400000) and perform the POWERTRAIN VERIFICATION TEST.
5. CHECK THE (F1) FUSED IGNITION OFF/RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT Using a 12-volt test light connected to ground, check the (F1) Fused Ignition Off/Run/Start Control Output Circuit. Does the test light illuminate brightly? Yes Go To 6 . No Repair the open or short in the (F1) Fused Ignition Off/Run/Start Control Output Circuit. Refer to «1500 & 2500 - 3.7L, 4.7L & 5.7L - POWERTRAIN VERIFICATION TEST»(ref-476600-S16182020042012060400000) or «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «2500 & 3500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476629-S31319329382012060400000) and perform the POWERTRAIN VERIFICATION TEST.
6. CHECK THE (F342) FUSED ASD RELAY OUTPUT CIRCUIT FOR AN OPEN OR SHORT Disconnect the PCM C3 harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, check the (F342) Fused ASD Relay Output circuits. Does the test light illuminate brightly for each circuit? Yes Go To 7 . No Repair the open or short in the (F342) Fused ASD Relay Output circuit. Refer to «1500 & 2500 - 3.7L, 4.7L & 5.7L - POWERTRAIN VERIFICATION TEST»(ref-476600-S16182020042012060400000) or «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «2500 & 3500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476629-S31319329382012060400000) and perform the POWERTRAIN VERIFICATION TEST.
7. CHECK THE (D65) CAN C BUS (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the TIPM C1 harness connector. Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM C1 harness connector and the PCM C1 connector. Is resistance below 5.0 Ohms? Yes Go To 8 . No Repair the open in the (D65) CAN C Bus (+) circuit. Refer to «1500 & 2500 - 3.7L, 4.7L & 5.7L - POWERTRAIN VERIFICATION TEST»(ref-476600-S16182020042012060400000) or «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «2500 & 3500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476629-S31319329382012060400000) and perform the POWERTRAIN VERIFICATION TEST.
8. CHECK THE (D64) CAN C BUS (-) CIRCUIT FOR AN OPEN Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM C1 harness connector and the PCM C1 connector. Is resistance below 5.0 Ohms? Yes Replace the Powertrain Control Module in accordance with the Service Information. Refer to «MODULE, POWERTRAIN CONTROL, REMOVAL»(ref-476533-S29192226892012060400000) or «MODULE, POWERTRAIN CONTROL, 6.7L DIESEL [ETJ], REMOVAL»(ref-476533-S09065799022012060400000) . Refer to «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476635-S37546799742012060400000) and perform the POWERTRAIN VERIFICATION TEST. No Repair the open in the (D64) CAN C Bus (-) circuit. Refer to «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476635-S37546799742012060400000) and perform the POWERTRAIN VERIFICATION TEST.

Scheme 77

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 78

Scheme 79

Scheme 80

Scheme 81

Scheme 82

Scheme 83

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. (A910/A118) FUSED B(+) CIRCUITS OPEN OR SHORTED Turn the ignition off. Disconnect the PCM C2 harness connector. Using a 12-volt test light connected to ground, check the (A910/A118) Fused B(+) circuits. Does the test light illuminate brightly for each circuit? Yes Go To 3 . No Repair the open or short in the (A910/A118) Fused B(+) circuit. Refer to «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476635-S37546799742012060400000) and perform the POWERTRAIN VERIFICATION TEST.
3. (Z915) GROUND CIRCUITS OPEN Using a 12-volt test light connected to 12-volts, check the (Z915) Ground circuits. Does the test light illuminate brightly for each circuit? Yes Go To 4 . No Repair the open in the (Z915) Ground circuit. Refer to «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476635-S37546799742012060400000) and perform the POWERTRAIN VERIFICATION TEST - 6.7L.
4. (F202) IGNITION RUN/START CONTROL OUTPUT CIRCUIT OPEN OR SHORTED Turn the ignition on. Using a 12-volt test light connected to ground, check the (F202) Ignition Run/Start Control Output circuit. Does the test light illuminate brightly? Yes Go To 5 . No Repair the open or short in the (F202) Ignition Run/Start Control Output circuit. Refer to «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476635-S37546799742012060400000) and perform the POWERTRAIN VERIFICATION TEST - 6.7L.
5. (F1) IGNITION SWITCH OUTPUT (OFF-RUN-START) CIRCUIT OPEN OR SHORTED Using a 12-volt test light connected to ground, check the (F1) Ignition Switch Output (Off-Run-Start) circuit. Does the test light illuminate brightly? Yes Go To 6 . No Repair the open or short in the (F1) Ignition Switch Output (Off-Run-Start) circuit. Refer to «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476635-S37546799742012060400000) and perform the POWERTRAIN VERIFICATION TEST - 6.7L.
6. (D65) CAN C BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the TIPM C1 harness connector. Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM C1 harness connector and the PCM C2 harness connector. Is resistance below 5.0 Ohms? Yes Go To 7 . No Repair the open in the (D65) CAN C Bus (+) circuit. Refer to «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476635-S37546799742012060400000) and perform the POWERTRAIN VERIFICATION TEST - 6.7L.
7. (D64) CAN C BUS (-) CIRCUIT OPEN Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM C1 harness connector and the PCM C2 harness connector. Is resistance below 5.0 Ohms? Yes Replace the PCM in accordance with the Service Information. Refer to «MODULE, POWERTRAIN CONTROL, REMOVAL»(ref-476533-S29192226892012060400000) or «MODULE, POWERTRAIN CONTROL, 6.7L DIESEL [ETJ], REMOVAL»(ref-476533-S09065799022012060400000) . Refer to «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476635-S37546799742012060400000) and perform the POWERTRAIN VERIFICATION TEST - 6.7L. No Repair the open in the (D64) CAN C Bus (-) circuit. Refer to «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476635-S37546799742012060400000) and perform the POWERTRAIN VERIFICATION TEST - 6.7L.

Scheme 84

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 85

Scheme 86

Scheme 87

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A214) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the Passenger Door Module C3 harness connector. Using a 12-volt test light connected to ground, check the (A214) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (A214) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
3. CHECK THE (Z909) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z909) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z909) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
4. CHECK THE (D265) AND (D264) CAN INTERIOR BUS (125K) CIRCUITS FOR AN OPEN Measure the resistance of the (D264) CAN Interior Bus (125K) (-) circuit between the TIPM C7 harness connector and the Passenger Door Module C3 harness connector. Measure the resistance of the (D265) CAN Interior Bus (125K) (+) circuit between the TIPM C7 harness connector and the Passenger Door Module C3 harness connector. Are the resistances below 5.0 Ohms? Yes Replace the Passenger Door Module in accordance with the Service Information. Refer to «MODULE, DOOR, REMOVAL»(ref-476533-S36948627272012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D265) or (D264) CAN Interior Bus (125K) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

Scheme 88

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 89

Scheme 90

Scheme 91

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (F921) FUSED RUN RELAY OUTPUT CIRCUIT FOR AN OPEN OR SHORT Disconnect the Park Assist Module C1 harness connector. Using a 12-volt test light connected to ground, check the (F921) Fused Run Relay Output circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (F921) Fused Run Relay Output circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
3. CHECK THE (Z906) GROUND CIRCUIT FOR AN OPEN Turn the ignition off. Using a 12-volt test light connected to 12-volts, check the (Z906) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z906) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
4. CHECK THE (D265) AND (D264) CAN INTERIOR BUS (125K) CIRCUITS FOR AN OPEN Disconnect the TIPM C7 harness connector. Measure the resistance of the (D264) CAN Interior Bus (125K) (-) circuit between the TIPM C7 harness connector and the Park Assist Module C1 harness connector. Measure the resistance of the (D265) CAN Interior Bus (125K) (+) circuit between the TIPM C7 harness connector and the Park Assist Module C1 harness connector. Are the resistances below 5.0 Ohms? Yes Replace the Park Assist Module in accordance with the Service Information. Refer to «MODULE, PARK ASSIST, REMOVAL»(ref-476533-S20749536342012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D265) or (D264) CAN Interior Bus (125K) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

Scheme 92

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 93

Scheme 94

Scheme 95

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A116) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the Radio C1 harness connector. Using a 12-volt test light connected to ground, check the (A116) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (A116) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
3. CHECK THE (Z912) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z912) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z912) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
4. CHECK THE (D265) AND (D264) CAN INTERIOR BUS (125K) CIRCUITS FOR AN OPEN Disconnect the TIPM C7 harness connector. Measure the resistance of the (D264) CAN Interior Bus (125K) (-) circuit between the TIPM C7 harness connector and the Radio C1 harness connector. Measure the resistance of the (D265) CAN Interior Bus (125K) (+) circuit between the TIPM C7 harness connector and the Radio C1 harness connector. Are the resistances below 5.0 Ohms? Yes Replace the Radio in accordance with the Service Information. Refer to «RADIO, REMOVAL»(ref-476524-S17451412852012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D265) or (D264) CAN Interior Bus (125K) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

Scheme 96

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 97

Scheme 98

Scheme 99

Scheme 100

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. (F943) FUSED IGNITION RUN/START CONTROL OUTPUT CIRCUIT OPEN OR SHORTED Turn the ignition off. Disconnect the Clockspring C3 harness connector. Turn the ignition on. Using a 12-volt test light connected to ground, check the (F943) Fused Ignition Run/Start Control Output circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (F943) Fused Ignition Run/Start Control Output circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
3. (Z911) GROUND CIRCUIT OPEN Turn the ignition off. Using a 12-volt test light connected to 12-volts, check the (Z911) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z911) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
4. (D52) CAN C BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the TIPM C7 harness connector. Measure the resistance of the (D52) CAN C Bus (+) circuit between the TIPM C7 harness connector and the Clockspring C3 connector. Is resistance below 5.0 Ohms? Yes Go To 5 . No Repair the open in the (D52) CAN C Bus (+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
5. (D51) CAN C BUS (-) CIRCUIT OPEN Measure the resistance of the (D51) CAN C Bus (-) circuit between the TIPM C7 harness connector and the Clockspring C3 connector. Is resistance below 5.0 Ohms? Yes Replace the Clockspring/Steering Angle Sensor in accordance with the Service Information. Refer to «CLOCKSPRING, REMOVAL»(ref-476529-S33678809682012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D51) CAN C Bus (-) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

NO RESPONSE FROM TCM (POWERTRAIN CONTROL MODULE) - GAS

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 101

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK FOR LOSS OF COMMUNICATION WITH PCM With the scan tool, read the active DTCs. Does the scan tool display U0100-LOST COMMUNICATION WITH ECM/PCM? Yes Refer to «DIAGNOSIS AND TESTING»(ref-476525-S20739439882012060400000) and perform the NO RESPONSE FROM PCM diagnostic procedure. No Go To 3 .
3. CHECK THE (Z908) GROUND CIRCUITS FOR AN OPEN Turn the ignition off. Disconnect the PCM C4 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 the PCM Pinout Box (special tool #8815A, Kit, NGC, 38 Position) to perform diagnosis. Using a 12-volt test light connected to 12-volts, check the (Z908) Ground circuits. Does the test light illuminate brightly for each circuit? Yes Replace the Powertrain Control Module in accordance with the Service Information. Refer to «MODULE, POWERTRAIN CONTROL, REMOVAL»(ref-476533-S29192226892012060400000) or «MODULE, POWERTRAIN CONTROL, 6.7L DIESEL [ETJ], REMOVAL»(ref-476533-S09065799022012060400000) . Refer to «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476635-S37546799742012060400000) and perform the POWERTRAIN VERIFICATION TEST - 6.7L. No Repair the open in the (Z908) Ground circuit. Refer to «3500 CAB & CHASSIS - POWERTRAIN VERIFICATION TEST»(ref-476607-S38255705622012060400000) or «3500 CAB & CHASSIS, 4500 & 5500 - POWERTRAIN VERIFICATION TEST - 6.7L»(ref-476635-S37546799742012060400000) and perform the POWERTRAIN VERIFICATION TEST - 6.7L.

NO RESPONSE FROM TCM (TRANSMISSION CONTROL MODULE) - 6.7L

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

NO RESPONSE FROM TCM (TRANSMISSION CONTROL MODULE) - AS68RC

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 102

Scheme 103

Scheme 104

Scheme 105

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A209) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the TCM C2 harness connector. Using a 12-volt test light connected to ground, check the (A209) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short to ground in the (A209) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476612-S09284896472012060400000) and perform the AS68RC TRANSMISSION VERIFICATION TEST.
3. CHECK THE (Z906) GROUND CIRCUITS FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z906) Ground circuits. Does the test light illuminate brightly for each circuit? Yes Go To 4 . No Repair the open in the (Z906) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476612-S09284896472012060400000) and perform the AS68RC TRANSMISSION VERIFICATION TEST.
4. CHECK THE (D52) CAN C BUS (+) CIRCUIT OPEN Disconnect the TIPM C7 harness connector. Measure the resistance of the (D52) CAN C Bus (+) circuit between the TIPM C7 harness connector and the TCM C2 harness connector. Is resistance below 5.0 Ohms? Yes Go To 5 . No Repair the open in the (D52) CAN C Bus (+) circuit. Refer to «STANDARD PROCEDURE»(ref-476612-S09284896472012060400000) and perform the AS68RC TRANSMISSION VERIFICATION TEST.
5. CHECK THE (D51) CAN C BUS (-) CIRCUIT FOR AN OPEN Measure the resistance of the (D51) CAN C Bus (-) circuit between the TIPM C7 harness connector and the TCM C2 harness connector. Is resistance below 5.0 Ohms? Yes Replace the TCM in accordance with the Service Information. Refer to «MODULE, TRANSMISSION CONTROL, DESCRIPTION»(ref-476533-S23272040342012060400000) . Refer to «STANDARD PROCEDURE»(ref-476612-S09284896472012060400000) and perform the AS68RC TRANSMISSION VERIFICATION TEST. No Repair the open in the (D51) CAN C Bus (-) circuit. Refer to «STANDARD PROCEDURE»(ref-476612-S09284896472012060400000) and perform the AS68RC TRANSMISSION VERIFICATION TEST.

NO RESPONSE FROM TIPM (TOTALLY INTEGRATED POWER MODULE)

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 106

Scheme 107

Scheme 108

Scheme 109

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A27) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the Tire Pressure Module harness connector. Using a 12-volt test light connected to ground, check the (A27) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (A27) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476573-S22522042732012060400000) and perform the TPM VERIFICATION TEST.
3. CHECK THE (Z906) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z906) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z906) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476573-S22522042732012060400000) and perform the TPM VERIFICATION TEST.
4. CHECK THE (D52) CAN C BUS (+) CIRCUIT FOR AN OPEN Disconnect the TIPM C7 harness connector. Measure the resistance of the (D52) CAN C Bus (+) circuit between the TIPM C7 harness connector and the Tire Pressure Module harness connector. Is resistance below 5.0 Ohms? Yes Go To 5 . No Repair the open in the (D52) CAN C Bus (+) circuit. Refer to «STANDARD PROCEDURE»(ref-476573-S22522042732012060400000) and perform the TPM VERIFICATION TEST.
5. CHECK THE (D51) CAN C BUS (-) CIRCUIT FOR AN OPEN Measure the resistance of the (D51) CAN C Bus (-) circuit between the TIPM C7 harness connector and the Tire Pressure Module harness connector. Is resistance below 5.0 Ohms? Yes Replace the TPM module in accordance with the Service Information. Refer to «MODULE, TIRE PRESSURE MONITORING (TPM), REMOVAL»(ref-476494-S30761618142012060400000) . Refer to «STANDARD PROCEDURE»(ref-476573-S22522042732012060400000) and perform the TPM VERIFICATION TEST. No Repair the open in the (D51) CAN C Bus (-) circuit. Refer to «STANDARD PROCEDURE»(ref-476573-S22522042732012060400000) and perform the TPM VERIFICATION TEST.

Scheme 110

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 111

Scheme 112

Scheme 113

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A413) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the Video Screen Module C1 harness connector. Using a 12-volt test light connected to ground, check the (A413) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (A413) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
3. CHECK THE (Z912) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z912) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z912) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
4. CHECK THE (D265) AND (D264) CAN INTERIOR BUS (125K) CIRCUITS FOR AN OPEN Measure the resistance of the (D264) CAN Interior Bus (125K) (-) circuit between the TIPM C7 harness connector and the Video Screen Module C1 harness connector. Measure the resistance of the (D265) CAN Interior Bus (125K) (+) circuit between the TIPM C7 harness connector and the Video Screen Module C1 harness connector. Are the resistances below 5.0 Ohms? Yes Replace the Video Screen Module in accordance with the Service Information. Refer to «MONITOR, MEDIA SYSTEM, REMOVAL»(ref-476524-S13490516162012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D265) or (D264) CAN Interior Bus (125K) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

Scheme 114

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Scheme 115

Scheme 116

Scheme 117

Scheme 118

1. TEST FOR INTERMITTENT CONDITION NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing. Turn the ignition on. NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts. With the scan tool, read the module status. NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding. Does the scan tool indicate that the module is active on the bus? Yes The no response condition is not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. No Go To 2 .
2. CHECK THE (A106) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT Turn the ignition off. Disconnect the Wireless Ignition Node harness connector. Using a 12-volt test light connected to ground, check the (A106) Fused B(+) circuit. Does the test light illuminate brightly? Yes Go To 3 . No Repair the open or short in the (A106) Fused B(+) circuit. Refer to «STANDARD PROCEDURE»(ref-476554-S29995725902012060400000) and perform the WIN VERIFICATION TEST.
3. CHECK THE (Z911) GROUND CIRCUIT FOR AN OPEN Using a 12-volt test light connected to 12-volts, check the (Z911) Ground circuit. Does the test light illuminate brightly? Yes Go To 4 . No Repair the open in the (Z911) Ground circuit. Refer to «STANDARD PROCEDURE»(ref-476554-S29995725902012060400000) and perform the WIN VERIFICATION TEST.
4. CHECK THE (D52) CAN C BUS (+) CIRCUIT FOR AN OPEN Disconnect the TIPM C7 harness connector. Measure the resistance of the (D52) CAN C Bus (+) circuit between the TIPM C7 harness connector and the Wireless Ignition Node harness connector. Is resistance below 5.0 Ohms? Yes Go To 5 . No Repair the open in the (D52) CAN C Bus (+) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.
5. CHECK THE (D51) CAN C BUS (-) CIRCUIT FOR AN OPEN Measure the resistance of the (D51) CAN C Bus (-) circuit between the TIPM C7 harness connector and the Wireless Ignition Node harness connector. Is resistance below 5.0 Ohms? Yes Replace the Wireless Ignition Node in accordance with the Service Information. Refer to «RECEIVER, WIRELESS IGNITION NODE, REMOVAL»(ref-476533-S21985724952012060400000) . Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST. No Repair the open in the (D51) CAN C Bus (-) circuit. Refer to «STANDARD PROCEDURE»(ref-476553-S41784775912012060400000) and perform the BODY VERIFICATION TEST.

STORED LOST COMMUNICATION DTCS

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

With the ignition on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received for approximately two to five seconds.