Amplifier (Amp) - Electrical Diagnostics: Other

When Monitored

With the ignition on.

Set Condition

This Diagnostic Trouble Code (DTC) sets if a Direct Current (DC) offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of four to six seconds.

Possible Causes

Possible Causes
AMPLIFIER

With the ignition on.

The Amplifier detects a shorted to ground condition on the speaker output circuit.

Possible Causes
(X209) AMPLIFIED LEFT FRONT I/P SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X299) AMPLIFIED LEFT FRONT I/P SPEAKER (-) CIRCUIT SHORTED TO GROUND
LEFT FRONT I/P SPEAKER
AMPLIFIER

Scheme 63

Scheme 63: Diagnostic Test

Scheme 64

Scheme 65

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1461-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
LEFT INSTRUMENT PANEL (I/P) SPEAKER Ensure one of the front doors is still open. With the scan tool, erase the DTCs. Turn the ignition off. Disconnect the Left I/P Speaker harness connector. Turn the ignition on. Turn the radio on and set the volume to 25. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1461-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 3 . No Replace the Left Instrument Panel Speaker. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X209) AMPLIFIED LEFT FRONT I/P SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Amplifier C1 harness connector. Measure the resistance between ground and the (X209) Left I/P Speaker (+) circuit. Is the resistance below 10K Ohms? Yes Repair the (X209) Left I/P Speaker (+) circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 4 .
CHECK THE (X299) AMPLIFIED LEFT FRONT I/P SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X299) Left I/P Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X299) Left I/P Speaker (-) circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

Possible Causes
(X209) AMPLIFIED LEFT I/P SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X299) AMPLIFIED LEFT I/P SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
AMPLIFIER

Scheme 66

Scheme 66: Diagnostic Test

Scheme 67

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1462-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK FOR VOLTAGE ON THE (X209) LEFT INSTRUMENT PANEL (I/P) SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C1 harness connector. Disconnect the Amplified Left I/P Speaker harness connector. Turn the ignition on. Measure the voltage between the (X209) Left I/P Speaker (+) circuit and ground. Is there any voltage present? Yes Repair the (X209) Left I/P Speaker (+) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK FOR VOLTAGE ON THE (X299) LEFT I/P SPEAKER (-) CIRCUIT Measure the voltage between the (X299) Left I/P Speaker (-) circuit and ground. Is there any voltage present? Yes Repair the (X299) Left I/P Speaker (-) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

Amplifier Bus wake-up. Amplifier reset with scan tool.

The Amplifier detects an open condition on the speaker output circuit.

Possible Causes
(X209) AMPLIFIED LEFT I/P SPEAKER (+) CIRCUIT OPEN
(X299) AMPLIFIED LEFT I/P SPEAKER (-) CIRCUIT OPEN
LEFT FRONT I/P SPEAKER
AMPLIFIER

Scheme 68

Scheme 68: Diagnostic Test

Scheme 69

Scheme 70

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1463-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE LEFT FRONT I/P SPEAKER Turn the ignition off. Disconnect the Left I/P Speaker harness connector. Turn the ignition on. Turn the radio on and set the volume to 25. Adjust the speakers to the front and center. With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Left I/P Speaker circuits in the Amplified Left I/P Speaker harness connector. Is the voltage present greater than 1 volt? Yes Replace the Amplified Left I/P Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X209) LEFT I/P SPEAKER (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C1 harness connector. Measure the resistance of the (X209) Left I/P Speaker (+) circuit between the Amplifier C1 harness connector and the Left I/P Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Go To 4 . No Repair the (X209) Left I/P Speaker (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X299) LEFT I/P SPEAKER (-) CIRCUIT FOR AN OPEN Measure the resistance of the (X299) Left I/P Speaker (-) circuit between the Amplifier C1 harness connector and the Left I/P Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Repair the (X299) Left I/P Speaker (-) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on. Radio volume at 25 or higher.

The Amplifier detects that the output circuits are shorted together.

Possible Causes
(X209) AMPLIFIED LEFT INSTRUMENT PANEL (I/P) (+) CIRCUIT SHORTED TO THE (X299) AMPLIFIED LEFT INSTRUMENT PANEL (I/P) (-) CIRCUIT
LEFT INSTRUMENT PANEL (I/P) SPEAKER
AMPLIFIER

Scheme 71

Scheme 71: Diagnostic Test

Scheme 72

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. Using the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1464-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE AMPLIFIED LEFT I/P SPEAKER Turn the ignition off. Disconnect the Left I/P Speaker harness connector. Measure the resistance of the speaker between the two terminals. NOTE: The graphic shows the connector for reference only. Measure at the speaker terminals. Is the resistance of the speaker less than 1 Ohm? Yes Replace the Left I/P Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X209) AMPLIFIED LEFT I/P SPEAKER (+) CIRCUIT, AND THE (X299) AMPLIFIED LEFT I/P SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Disconnect the Amplifier C1 harness connector. Measure the resistance between the (X209) Left I/P Speaker (+) circuit and the (X299) Left I/P Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X209) Left I/P Speaker (+) circuit for a short to the (X299) Left I/P Speaker (-) circuit. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on.

This Diagnostic Trouble Code (DTC) sets if a Direct Current (DC) offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of four to six seconds.

Possible Causes
AMPLIFIER

With the ignition on.

The Amplifier detects a shorted to ground condition on the speaker output circuit.

Possible Causes
(X208) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X298) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUIT SHORTED TO GROUND
RIGHT I/P SPEAKER
AMPLIFIER

Scheme 73

Scheme 73: Diagnostic Test

Scheme 74

Scheme 75

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. Using the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1466-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE RIGHT INSTRUMENT PANEL (I/P) SPEAKER Make sure one of the front doors is still open. Using the scan tool, erase the DTCs. Turn the ignition off. Disconnect the Right I/P Speaker harness connector. Turn the ignition on. Turn the radio on and set the volume to 25. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1466-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 3 . No Replace the Right Instrument Panel Speaker. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X208) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Amplifier C1 harness connector. Measure the resistance between ground and the (X208) Right I/P Speaker (+) circuit. Is the resistance below 10K Ohms? Yes Repair the (X208) Right I/P Speaker (+) circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 4 .
CHECK THE (X298) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X298) Amplified Right I/P Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X298) Amplified Right I/P Speaker (-) for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on.

The Amplifier detects a short to battery condition on the output circuit.

Possible Causes
(X208) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X298) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
AMPLIFIER

Scheme 76

Scheme 76: Diagnostic Test

Scheme 77

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. Using the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1467-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK FOR VOLTAGE ON THE (X208) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C1 harness connector. Disconnect the Amplified Right I/P Speaker harness connector. Turn the ignition on. Measure for voltage between the (X208) Amplified Right I/P Speaker (+) circuit and ground. Is there any voltage present? Yes Repair the (X208) Amplified Right I/P Speaker (+) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK FOR VOLTAGE ON THE (X298) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUIT Measure for voltage on the (X298) Amplified Right I/P Speaker (-) circuit and ground. Is there any voltage present? Yes Repair the (X298) Amplified Right I/P Speaker (-) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

Amplifier Bus wake-up. Amplifier reset with scan tool.

The Amplifier detects an open condition on the speaker output circuit.

Possible Causes
(X208) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT OPEN
(X298) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUIT OPEN
RIGHT I/P SPEAKER
AMPLIFIER

Scheme 78

Scheme 78: Diagnostic Test

Scheme 79

Scheme 80

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1468-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE RIGHT FRONT I/P SPEAKER Turn the ignition off. Disconnect the Right I/P Speaker harness connector. Turn the radio on and turn the volume to 25. With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Right I/P Speaker circuits in the Amplified Right I/P Speaker harness connector. Is the voltage present greater than 1 volt? Yes Replace the Amplified Right I/P Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X208) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C1 harness connector. Measure the resistance of the (X208) Amplified Right I/P Speaker (+) circuit between the Amplifier C1 harness connector and the Amplified Right I/P Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Go To 4 . No Repair the (X208) Amplified Right I/P Speaker (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X298) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUIT FOR AN OPEN Measure the resistance of the (X298) Amplified Right I/P Speaker (-) circuit between the Amplifier C1 harness connector and the Amplified Right I/P Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Repair the (X298) Amplified Right I/P Speaker (-) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on. Radio volume at 25 or higher.

The Amplifier detects that the output circuits are shorted together.

Possible Causes
(X208) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT SHORTED TO THE (X298) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUIT
AMPLIFIED RIGHT I/P SPEAKER
AMPLIFIER

Scheme 81

Scheme 81: Diagnostic Test

Scheme 82

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1469-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE AMPLIFIED RIGHT I/P SPEAKER Turn the ignition off. Disconnect the Amplified Right I/P Speaker. Measure the resistance of the speaker between the two terminals. NOTE: The graphic shows the connector for reference only. Measure at the speaker terminals. Is the resistance of the speaker less than 1 Ohm? Yes Replace the Amplified Right I/P Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X208) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT, AND THE (X298) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Disconnect the Amplifier C1 harness connector. Measure the resistance between the (X208) Amplified Right I/P Speaker (+) circuit, and the (X298) Amplified Right I/P Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X208) Amplified Right I/P Speaker (+) circuit, and the (X298) Amplified Right I/P Speaker (-) circuit for a short together. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B146A-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

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

With the ignition on.

This Diagnostic Trouble Code (DTC) sets if a Direct Current (DC) offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of four to six seconds.

Possible Causes
AMPLIFIER

With the ignition on.

The Amplifier detects a shorted to ground condition on the speaker output circuit.

Possible Causes
(X201) LEFT FRONT DOOR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X291) LEFT FRONT DOOR SPEAKER (-) CIRCUIT SHORTED TO GROUND
LEFT FRONT DOOR SPEAKER
AMPLIFIER

Scheme 83

Scheme 83: Diagnostic Test

Scheme 84

Scheme 85

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. Using the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B146B-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE LEFT FRONT DOOR SPEAKER Make sure one of the front doors is still open. Using the scan tool, erase the DTCs. Turn the ignition off. Disconnect the Left Front Door Speaker harness connector. Turn the ignition on. Turn the radio on and set the volume to 25. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B146B-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 3 . No Replace the Left Front Door Speaker. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X201) LEFT FRONT DOOR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance between ground and the (X201) Left Front Door Speaker (+) circuit. Is the resistance below 10K Ohms? Yes Repair the (X201) Left Front Door Speaker (+) circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 4 .
CHECK THE (X291) LEFT FRONT DOOR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X291) Left Front Door Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X291) Left Front Door Speaker (-) for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B146C-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT HIGH

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

With the ignition on.

The Amplifier detects a short to battery condition on the output circuit.

Possible Causes
(X201) LEFT FRONT DOOR SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X291) LEFT FRONT DOOR SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
AMPLIFIER

Scheme 86

Scheme 86: Diagnostic Test

Scheme 87

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B146C-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK FOR VOLTAGE ON THE (X201) LEFT FRONT DOOR SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C2 harness connector. Disconnect the Left Front Door Speaker harness connector. Turn the ignition on. Measure for voltage between the (X201) Left Front Door Speaker (+) circuit and ground. Is there any voltage present? Yes Repair the (X201) Left Front Door Speaker (+) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK FOR VOLTAGE ON THE (X291) LEFT FRONT DOOR SPEAKER (-) CIRCUIT Measure for voltage between the (X291) Left Front Door Speaker (-) circuit and ground. Is there any voltage present? Yes Repair the (X291) Left Front Door Speaker (-) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B146D-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT OPEN

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

Amplifier Bus wake-up. Amplifier reset with scan tool.

The Amplifier detects an open condition on the speaker output circuit.

Possible Causes
(X201) LEFT FRONT DOOR SPEAKER (+) CIRCUIT OPEN
(X291) LEFT FRONT DOOR SPEAKER (-) CIRCUIT OPEN
LEFT FRONT DOOR SPEAKER
AMPLIFIER

Scheme 88

Scheme 88: Diagnostic Test

Scheme 89

Scheme 90

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B146D-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE LEFT FRONT DOOR SPEAKER Turn the ignition off. Disconnect the Left Front Door Speaker harness connector. Turn the ignition on. Turn the radio on and turn the volume to 25. Adjust the speakers to the front and center. With a voltmeter set to read in A/C voltage, measure the voltage of the Left Front Door Speaker circuits in the Left Front Door Speaker harness connector. Is the voltage present greater than 1 volt? Yes Replace the Left Front Door Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X201) LEFT FRONT DOOR SPEAKER (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X201) Left Front Door Speaker (+) circuit between the Amplifier C2 harness connector and the Left Rear Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Go To 4 . No Repair the (X201) Left Front Door Speaker (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X291) LEFT FRONT DOOR SPEAKER (-) CIRCUIT FOR AN OPEN Measure the resistance of the (X291) Left Front Door Speaker (-) circuit between the Amplifier C2 harness connector and the Left Front Door Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Repair the (X291) Left Front Door Speaker (-) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B146E-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER

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

With the ignition on. Radio volume at 25 or higher.

The Amplifier detects that the output circuits are shorted together.

Possible Causes
(X201) LEFT FRONT DOOR SPEAKER (+) CIRCUIT SHORTED TO THE (X291) LEFT FRONT DOOR SPEAKER (-) CIRCUIT
LEFT FRONT DOOR SPEAKER
AMPLIFIER

Scheme 91

Scheme 91: Diagnostic Test

Scheme 92

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B146E-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE LEFT FRONT DOOR SPEAKER Turn the ignition off. Disconnect the Left Front Door Speaker harness connector. Measure the resistance of the speaker between the two terminals. NOTE: The graphic shows the connector for reference only. Measure at the speaker terminals. Is the resistance of the speaker less than 1 Ohm? Yes Replace the Left Front Door Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X201) LEFT FRONT DOOR SPEAKER (+) CIRCUIT, AND THE (X291) LEFT FRONT DOOR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Disconnect the Amplifier C2 harness connector. Measure the resistance between the (X201) Left Front Door Speaker (+) circuit, and the (X291) Left Front Door Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X201) Left Front Door Speaker (+) circuit, and the (X291) Left Front Door Speaker (-) circuit for a short together. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B146F-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

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

With the ignition on.

This Diagnostic Trouble Code (DTC) sets if a Direct Current (DC) offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of four to six seconds.

Possible Causes
AMPLIFIER

With the ignition on.

The Amplifier detects a shorted to ground condition on the speaker output circuit.

Possible Causes
(X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT SHORTED TO GROUND
RIGHT FRONT DOOR SPEAKER
AMPLIFIER

Scheme 93

Scheme 93: Diagnostic Test

Scheme 94

Scheme 95

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1470-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No 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. Perform BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE RIGHT FRONT DOOR SPEAKER Ensure one of the front doors is still open. With the scan tool, erase the DTCs. Turn the ignition off. Disconnect the Right Front Door Speaker harness connector. Turn the ignition on. Turn the radio on and set the volume to 25. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1470-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 3 . No Replace the Right Front Door Speaker. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance between ground and the (X202) Right Front Door Speaker (+) circuit. Is the resistance below 10K Ohms? Yes Repair the (X202) Right Front Door Speaker (+) circuit for a short to ground. Perform BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 4 .
CHECK THE (X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X292) Right Front Door Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X292) Right Front Door Speaker (-) for a short to ground. Perform BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on.

The Amplifier detects a short to battery condition on the output circuit.

Possible Causes
(X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
AMPLIFIER

Scheme 96

Scheme 96: Diagnostic Test

Scheme 97

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1471-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK FOR VOLTAGE ON THE (X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C2 harness connector. Disconnect the Right Front Door Speaker harness connector. Turn the ignition on. Measure the voltage between the (X202) Right Front Door Speaker (+) circuit and ground. Is there any voltage present? Yes Repair the (X202) Right Front Door Speaker (+) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK FOR VOLTAGE ON THE (X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT Measure the voltage between the (X292) Right Front Door Speaker (-) circuit and ground. Is there any voltage present? Yes Repair the (X292) Right Front Door Speaker (-) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

Amplifier Bus wake-up. Amplifier reset with scan tool.

The Amplifier detects an open condition on the speaker output circuit.

Possible Causes
(X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT OPEN
(X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT OPEN
RIGHT FRONT DOOR SPEAKER
AMPLIFIER

Scheme 98

Scheme 98: Diagnostic Test

Scheme 99

Scheme 100

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1472-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE RIGHT FRONT DOOR SPEAKER Turn the ignition off. Disconnect the Right Front Door Speaker harness connector. Turn the ignition on. Turn the radio on and turn the volume to 25. Adjust the speakers to the front and center. With a voltmeter set to read in A/C voltage, measure the voltage of the Right Front Door Speaker circuits in the Right Front Door Speaker harness connector. Is the voltage present greater than 1 volt? Yes Replace the Right Front Door Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X202) Right Front Door Speaker (+) circuit between the Amplifier C2 harness connector and the Right Front Door Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Go To 4 . No Repair the (X202) Right Front Door Speaker (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT FOR AN OPEN Measure the resistance of the (X292) Right Front Door Speaker (-) circuit between the Amplifier C2 harness connector and the Right Front Door Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Repair the (X292) Right Front Door Speaker (-) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on.

Radio volume at 25 or higher.

The Amplifier detects that the output circuits are shorted together.

Possible Causes
(X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT SHORTED TO THE (X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUIT
RIGHT FRONT DOOR SPEAKER
AMPLIFIER

Scheme 101

Scheme 101: Diagnostic Test

Scheme 102

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1473-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE RIGHT FRONT DOOR SPEAKER Turn the ignition off. Disconnect the Right Front Door Speaker. Measure the resistance of the speaker between the two terminals. NOTE: The graphic shows the connector for reference only. Measure at the speaker terminals. Is the resistance of the speaker less than 1 Ohm? Yes Replace the Right Front Door Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X202) RIGHT FRONT DOOR SPEAKER (+) CIRCUIT, AND THE (X292) RIGHT FRONT DOOR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Disconnect the Amplifier C2 harness connector. Measure the resistance between the (X202) Right Front Door Speaker (+) circuit, and the (X292) Right Front Door Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X202) Right Front Door Speaker (+) circuit, and the (X292) Right Front Door Speaker (-) circuit for a short together. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on.

This Diagnostic Trouble Code (DTC) sets if a Direct Current (DC) offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of four to six seconds.

Possible Causes
AMPLIFIER

With the ignition on.

The Amplifier detects a shorted to ground condition on the speaker output circuit.

Possible Causes
(X205) LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X295) LEFT REAR SPEAKER (-) CIRCUIT SHORTED TO GROUND
LEFT REAR SPEAKER
AMPLIFIER

Scheme 103

Scheme 103: Diagnostic Test

Scheme 104

Scheme 105

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. Using the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1475-CHANNEL 5 OUTPUT CIRCUIT LOW? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE LEFT REAR SPEAKER Make sure one of the front doors is still open. Using the scan tool, erase the DTCs. Turn the ignition off. Disconnect the Left Rear Speaker harness connector. Turn the ignition on. Turn the radio on and set the volume to 25. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1475-CHANNEL 5 OUTPUT CIRCUIT LOW? Yes Go To 3 . No Replace the Left Rear Speaker. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X205) LEFT REAR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance between ground and the (X205) Left Rear Speaker (+) circuit. Is the resistance below 10K Ohms? Yes Repair the (X205) Left Rear Speaker (+) circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 4 .
CHECK THE (X295) LEFT REAR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X295) Left Rear Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X295) Left Rear Speaker (-) for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on.

The Amplifier detects a short to battery condition on the output circuit.

Possible Causes
(X205) LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X295) LEFT REAR SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
AMPLIFIER

Scheme 106

Scheme 106: Diagnostic Test

Scheme 107

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. Using the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1476-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK FOR VOLTAGE ON THE (X205) LEFT REAR SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C2 harness connector. Disconnect the Left Rear Speaker harness connector. Turn the ignition on. Measure the voltage between the (X205) Left Rear Speaker (+) circuit and ground. Is there any voltage present? Yes Repair the (X205) Left Rear Speaker (+) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK FOR VOLTAGE ON THE (X295) LEFT REAR SPEAKER (-) CIRCUIT Measure the voltage between the (X295) Left Rear Speaker (-) circuit and ground. Is there any voltage present? Yes Repair the (X295) Left Rear Speaker (-) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

Amplifier Bus wake-up. Amplifier reset with scan tool.

The Amplifier detects an open condition on the speaker output circuit.

Possible Causes
(X205) LEFT REAR SPEAKER (+) CIRCUIT OPEN
(X295) LEFT REAR SPEAKER (-) CIRCUIT OPEN
LEFT REAR SPEAKER
AMPLIFIER

Scheme 108

Scheme 108: Diagnostic Test

Scheme 109

Scheme 110

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. Using the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1477-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE LEFT REAR SPEAKER Turn the ignition off. Disconnect the Left Rear Speaker harness connector. Turn the ignition on. Turn the radio on and turn the volume to 25. Adjust the speakers to the rear and center. With a Voltmeter set to read in A/C voltage, measure the voltage of the Left Rear Speaker circuits in the Left Rear Speaker harness connector. Is the voltage present greater than 1 Volt? Yes Replace the Left Rear Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X205) LEFT REAR SPEAKER (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X205) Left Rear Speaker (+) circuit between the Amplifier C2 harness connector and the Left Rear Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Go To 4 . No Repair the (X205) Left Rear Speaker (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X295) LEFT REAR SPEAKER (-) CIRCUIT FOR AN OPEN Measure the resistance of the (X295) Left Rear Speaker (-) circuit between the Amplifier C2 harness connector and the Left Rear Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Repair the (X295) Left Rear Shelf Speaker (-) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on. Radio volume at 25 or higher.

The Amplifier detects that the output circuits are shorted together.

Possible Causes
(X205) LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO THE (X295) LEFT REAR SPEAKER (-) CIRCUIT
LEFT REAR SPEAKER
AMPLIFIER

Scheme 111

Scheme 111: Diagnostic Test

Scheme 112

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. Using the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1478-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE LEFT REAR SPEAKER Turn the ignition off. Disconnect the Left Rear Speaker. Measure the resistance of the speaker between the two terminals. NOTE: The graphic shows the connector for reference only. Measure between the speaker terminals. Is the resistance of the speaker less than 1 Ohm? Yes Replace the Left Rear Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X205) LEFT REAR SPEAKER (+) CIRCUIT, AND THE (X295) LEFT REAR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance between the (X205) Left Rear Speaker (+) circuit, and the (X295) Left Rear Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X205) Left Rear Speaker (+) circuit, and the (X295) Left Rear Speaker (-) circuit for a short together. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on.

This Diagnostic Trouble Code (DTC) sets if a Direct Current (DC) offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of four to six seconds.

Possible Causes
AMPLIFIER

With the ignition on.

The Amplifier detects a shorted to ground condition on the speaker output circuit.

Possible Causes
(X206) RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X296) RIGHT REAR SPEAKER (-) CIRCUIT SHORTED TO GROUND
RIGHT REAR SPEAKER
AMPLIFIER

Scheme 113

Scheme 113: Diagnostic Test

Scheme 114

Scheme 115

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. Using the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B147A-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE RIGHT REAR SPEAKER Make sure one of the front doors is still open. Using the scan tool, erase the DTCs. Turn the ignition off. Disconnect the Right Rear Speaker harness connector. Turn the ignition on. Turn the radio on and set the volume to 25. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B147A-CHANNEL 6 OUTPUT CIRCUIT LOW? Yes Go To 3 . No Replace the Right Rear Speaker. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X206) RIGHT REAR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance between ground and the (X206) Right Rear Speaker (+) circuit. Is the resistance below 10K Ohms? Yes Repair the (X206) Right Rear Speaker (+) circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 4 .
CHECK THE (X296) RIGHT REAR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X296) Right Rear Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X296) Right Rear Speaker (-) for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B147B-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT HIGH

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

With the ignition on.

The Amplifier detects a short to battery condition on the output circuit.

Possible Causes
(X206) RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X296) RIGHT REAR SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
AMPLIFIER

Scheme 116

Scheme 116: Diagnostic Test

Scheme 117

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B147B-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK FOR VOLTAGE ON THE (X206) RIGHT REAR SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C2 harness connector. Disconnect the Right Rear Speaker harness connector. Turn the ignition on. Measure the voltage between the (X206) Right Rear Speaker (+) circuit and ground. Is there any voltage present? Yes Repair the (X206) Right Rear Speaker (+) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK FOR VOLTAGE ON THE (X296) RIGHT REAR SPEAKER (-) CIRCUIT Measure the voltage between the (X296) Right Rear Speaker (-) circuit and ground. Is there any voltage present? Yes Repair the (X296) Right Rear Speaker (-) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B147C-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT OPEN

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

Amplifier Bus wake-up. Amplifier reset with scan tool.

The Amplifier detects an open condition on the speaker output circuit.

Possible Causes
(X206) RIGHT REAR SPEAKER (+) CIRCUIT OPEN
(X296) RIGHT REAR SPEAKER (-) CIRCUIT OPEN
RIGHT REAR SPEAKER
AMPLIFIER

Scheme 118

Scheme 118: Diagnostic Test

Scheme 119

Scheme 120

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B147C-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE RIGHT REAR SPEAKER Turn the ignition off. Disconnect the Right Rear Speaker harness connector. Turn the radio on and turn the volume to 25. With a voltmeter set to read in A/C voltage, measure the voltage of the Right Rear Speaker circuits in the Right Rear Speaker harness connector. Is the voltage present greater than 1 volt? Yes Replace the Right Rear Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X206) RIGHT REAR SPEAKER (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X206) Right Rear Speaker (+) circuit between the Amplifier C2 harness connector and the Right Rear Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Go To 4 . No Repair the (X206) Right Rear Speaker (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X296) RIGHT REAR SPEAKER (-) CIRCUIT FOR AN OPEN Measure the resistance of the (X296) Right Rear Speaker (-) circuit between the Amplifier C2 harness connector and the Right Rear Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Repair the (X296) Right Rear Speaker (-) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B147D-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER

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

With the ignition on. Radio volume at 25 or higher.

The Amplifier detects that the output circuits are shorted together.

Possible Causes
(X206) RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO THE (X296) RIGHT REAR SPEAKER (-) CIRCUIT
RIGHT REAR SPEAKER
AMPLIFIER

Scheme 121

Scheme 121: Diagnostic Test

Scheme 122

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B147D-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE RIGHT REAR SPEAKER Turn the ignition off. Disconnect the Right Rear Speaker. Measure the resistance of the speaker between the two terminals. NOTE: The graphic shows the connector for reference only. Measure between the speaker terminals. Is the resistance of the speaker less than 1 Ohm? Yes Replace the Right Rear Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X206) RIGHT REAR SPEAKER (+) CIRCUIT, AND THE (X296) RIGHT REAR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Disconnect the Amplifier C2 harness connector. Measure the resistance between the (X206) Right Rear Speaker (+) circuit, and the (X296) Right Rear Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X206) Right Rear Speaker (+) circuit, and the (X296) Right Rear Speaker (-) circuit for a short together. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B147E-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

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

With the ignition on.

This Diagnostic Trouble Code (DTC) sets if a Direct Current (DC) offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of four to six seconds.

Possible Causes
AMPLIFIER

With the ignition on.

The Amplifier detects a shorted to ground condition on the speaker output circuit.

Possible Causes
(X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT SHORTED TO GROUND
(X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT SHORTED TO GROUND
AMPLIFIED SUBWOOFER SPEAKER
AMPLIFIER

Scheme 123

Scheme 123: Diagnostic Test

Scheme 124

Scheme 125

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. Using the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B147F-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE SUBWOOFER SPEAKER Make sure one of the front doors is still open. Using the scan tool, erase the DTCs. Turn the ignition off. Disconnect the Subwoofer Speaker harness connector. Turn the ignition on. Turn the radio on and set the volume to 25. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B147F-CHANNEL 7 OUTPUT CIRCUIT LOW? Yes Go To 3 . No Replace the Subwoofer Speaker. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT FOR A SHORT TO GROUND Disconnect the Amplifier C2 harness connector. Disconnect the Subwoofer Speaker harness connector. Measure the resistance between ground and the (X300) Amplified Subwoofer 1 (+) circuit. Is the resistance below 10K Ohms? Yes Repair the (X300) Amplified Subwoofer 1 (+) circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 4 .
CHECK THE (X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X390) Amplified Subwoofer 1 (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X390) Amplified Subwoofer 1 (-) circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on.

The Amplifier detects a short to battery condition on the output circuit.

Possible Causes
(X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT SHORTED TO VOLTAGE
(X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT SHORTED TO VOLTAGE
AMPLIFIER

Scheme 126

Scheme 126: Diagnostic Test

Scheme 127

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1480-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK FOR VOLTAGE ON THE (X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C2 harness connector. Disconnect the Subwoofer Speaker harness connector. Turn the ignition on. Measure the voltage between the (X300) Amplified Subwoofer 1 (+) circuit and ground. Is there any voltage present? Yes Repair the (X300) Amplified Subwoofer 1 (+) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK FOR VOLTAGE ON THE (X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT Measure the voltage between the (X390) Amplified Subwoofer 1 (-) circuit and ground. Is there any voltage present? Yes Repair the (X390) Amplified Subwoofer 1 (-) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

Amplifier Bus wake-up. Amplifier reset with scan tool.

The Amplifier detects an open condition on the speaker output circuit.

Possible Causes
(X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT OPEN
(X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT OPEN
AMPLIFIED SUBWOOFER SPEAKER
AMPLIFIER

Scheme 128

Scheme 128: Diagnostic Test

Scheme 129

Scheme 130

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1481-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE SUBWOOFER SPEAKER Turn the ignition off. Disconnect the Subwoofer Speaker harness connector. Turn the ignition on. Turn the radio on and turn the volume to 25. Adjust the speakers to the rear and center. With a voltmeter set to read in A/C voltage, measure the voltage of the Subwoofer Speaker circuits in the Subwoofer Speaker harness connector. Is the voltage present greater than 1 volt? Yes Replace the Subwoofer Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X300) Amplified Subwoofer 1 (+) circuit between the Amplifier C2 harness connector and the Subwoofer Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Go To 4 . No Repair the (X300) Amplified Subwoofer 1 (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT FOR AN OPEN Measure the resistance of the (X390) Amplified Subwoofer 1 (-) circuit between the Amplifier C2 harness connector and the Subwoofer Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Repair the (X390) Amplified Subwoofer 1 (-) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on. Radio volume at 25 or higher.

The Amplifier detects that the output circuits are shorted together.

Possible Causes
(X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT SHORTED TO THE (X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUIT
AMPLIFIED SUBWOOFER SPEAKER
AMPLIFIER

Scheme 131

Scheme 131: Diagnostic Test

Scheme 132

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1482-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE SUBWOOFER SPEAKER Turn the ignition off. Disconnect the Subwoofer Speaker. Measure the resistance of the speaker between the two terminals. NOTE: The graphic shows the connector for reference only. Measure between the speaker terminals. Is the resistance of the speaker less than 1 Ohm? Yes Replace the Subwoofer Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X300) AMPLIFIED SUBWOOFER 1 (+) CIRCUIT, AND THE (X390) AMPLIFIED SUBWOOFER 1 (-) CIRCUITS FOR A SHORT TOGETHER Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance between the (X300) Amplified Subwoofer 1 (+) circuit, and the (X390) Amplified Subwoofer 1 (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X300) Amplified Subwoofer 1 (+) circuit, and the (X390) Amplified Subwoofer 1 (-) circuit for a short together. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on.

This Diagnostic Trouble Code (DTC) sets if a Direct Current (DC) offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of four to six seconds.

Possible Causes
AMPLIFIER

With the ignition on.

The Amplifier detects a shorted to ground condition on the speaker output circuit.

Possible Causes
(X200) AMPLIFIED CENTER I/P SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X290) AMPLIFIED CENTER I/P SPEAKER (-) CIRCUIT SHORTED TO GROUND
CENTER I/P SPEAKER
AMPLIFIER

Scheme 133

Scheme 133: Diagnostic Test

Scheme 134

Scheme 135

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. Using the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1484-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CENTER INSTRUMENT PANEL (I/P) SPEAKER Make sure one of the front doors is still open. Using the scan tool, erase the DTCs. Turn the ignition off. Disconnect the Center I/P Speaker harness connector. Turn the ignition on. Turn the radio on and set the volume to 25. Using the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1484-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 3 . No Replace the Center Instrument Panel Speaker. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X200) AMPLIFIED CENTER I/P SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance between ground and the (X200) Amplified Center I/P Speaker (+) circuit. Is the resistance below 10K Ohms? Yes Repair the (X200) Amplified Center I/P Speaker (+) circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 4 .
CHECK THE (X290) AMPLIFIED CENTER I/P SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X290) Amplified Center I/P Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X290) Amplified Center I/P Speaker (-) for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on.

The Amplifier detects a short to battery condition on the output circuit.

Possible Causes
(X200) AMPLIFIED CENTER I/P SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X290) AMPLIFIED CENTER I/P SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
AMPLIFIER

Scheme 136

Scheme 136: Diagnostic Test

Scheme 137

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1485-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK FOR VOLTAGE ON THE (X200) AMPLIFIED CENTER I/P SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C2 harness connector. Disconnect the Center I/P Speaker harness connector. Turn the ignition on. Measure for voltage between the (X200) Amplified Center I/P Speaker (+) circuit and ground. Is there any voltage present? Yes Repair the (X200) Amplified Center I/P Speaker (+) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK FOR VOLTAGE ON THE (X290) AMPLIFIED CENTER I/P SPEAKER (-) CIRCUIT Measure for voltage between the (X290) Amplified Center I/P Speaker (-) circuit and ground. Is there any voltage present? Yes Repair the (X290) Amplified Center I/P Speaker (-) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

Amplifier Bus wake-up. Amplifier reset with scan tool.

The Amplifier detects an open condition on the speaker output circuit.

Possible Causes
(X200) AMPLIFIED CENTER I/P SPEAKER (+) CIRCUIT OPEN
(X290) AMPLIFIED CENTER I/P SPEAKER (-) CIRCUIT OPEN
AMPLIFIED CENTER I/P SPEAKER
AMPLIFIER

Scheme 138

Scheme 138: Diagnostic Test

Scheme 139

Scheme 140

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1486-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE CENTER I/P SPEAKER Turn the ignition off. Disconnect the Center I/P Speaker harness connector. Turn the ignition on. Turn the radio on and turn the volume to 25. Adjust the speakers to the front and center. With a voltmeter set to read in A/C voltage, measure the voltage of the Center I/P Speaker circuits in the Center I/P Speaker harness connector. Is the voltage present greater than 1 volt? Yes Replace the Center I/P Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X200) AMPLIFIED CENTER I/P SPEAKER (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X200) Amplified Center I/P Speaker (+) circuit between the Amplifier C2 harness connector and the Center I/P Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Go To 4 . No Repair the (X200) Amplified Center I/P Speaker (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X290) AMPLIFIED CENTER I/P SPEAKER (-) CIRCUIT FOR AN OPEN Measure the resistance of the (X290) Amplified Center I/P Speaker (-) circuit between the Amplifier C2 harness connector and the Center I/P Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Repair the (X290) Amplified Center I/P Speaker (-) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on. Radio volume at 25 or higher.

The Amplifier detects that the output circuits are shorted together.

Possible Causes
(X200) AMPLIFIED CENTER I/P SPEAKER (+) CIRCUIT SHORTED TO THE (X290) AMPLIFIED CENTER I/P SPEAKER (-) CIRCUIT
AMPLIFIED CENTER I/P SPEAKER
AMPLIFIER

Scheme 141

Scheme 141: Diagnostic Test

Scheme 142

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B1487-CHANNEL 8 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF CENTER I/P SPEAKER Turn the ignition off. Disconnect the Center I/P Speaker. Measure the resistance of the speaker between the two terminals. NOTE: The graphic shows the connector for reference only. Measure at the speaker terminals. Is the resistance of the speaker less than 1 Ohm? Yes Replace the Center I/P Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X200) AMPLIFIED CENTER I/P SPEAKER (+) CIRCUIT, AND THE (X290) AMPLIFIED CENTER I/P SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Disconnect the Amplifier C2 harness connector. Measure the resistance between the (X200) Amplified Center I/P Speaker (+) circuit, and the (X290) Amplified Center I/P Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X200) Amplified Center I/P Speaker (+) circuit, and the (X290) Amplified Center I/P Speaker (-) circuit for a short together. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

With the ignition on.

If the Cabin Equalization Curve number message from the Totally Integrated Power Module (TIPM) is not the same as the Cabin Equalization Curve number stored in the Amplifier for 10 consecutive cycles, then the Amplifier will set this DTC.

POSSIBLE CAUSES
NO COMMUNICATION WITH TOTALLY INTEGRATED POWER MODULE (TIPM)
ACTIVE TIPM DTCs
TOTALLY INTEGRATED POWER MODULE (TIPM)
AMPLIFIER

B14B9-CHANNEL 9 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

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

With the ignition on.

This Diagnostic Trouble Code (DTC) sets if a Direct Current (DC) offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of four to six seconds.

Possible Causes
AMPLIFIER

Possible Causes
(X303) LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X393) LEFT REAR SPEAKER (-) CIRCUIT SHORTED TO GROUND
LEFT REAR SPEAKER
AMPLIFIER

Scheme 143

Scheme 143: Diagnostic Test

Scheme 144

Scheme 145

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14BA-CHANNEL 9 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE LEFT REAR SPEAKER Make sure one of the front doors is still open. With the scan tool, erase the DTCs. Turn the ignition off. Disconnect the Left Rear Speaker harness connector. Turn the ignition on. Turn the radio on and set the volume to 25. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14BA-CHANNEL 9 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 3 . No Replace the Left Rear Speaker. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X303) LEFT REAR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Disconnect the Amplifier C1 harness connector. Disconnect the Left Rear Speaker harness connector. Measure the resistance between ground and the (X303) Left Rear Speaker (+) circuit. Is the resistance below 10K Ohms? Yes Repair the (X303) Left Rear Speaker (+) circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 4 .
CHECK THE (X393) LEFT REAR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X393) Left Rear Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X393) Left Rear Speaker (-) for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B14BB-CHANNEL 9 AUDIO SPEAKER OUTPUT CIRCUIT HIGH

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

When Monitored: With the ignition on.
Set Condition: The Amplifier detects a short to battery condition on the output circuit.

Possible Causes
(X303) LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X393) LEFT REAR SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
AMPLIFIER

Scheme 146

Scheme 146: Diagnostic Test

Scheme 147

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14BB-CHANNEL 9 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK FOR VOLTAGE ON THE (X303) LEFT REAR SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C1 harness connector. Disconnect the Left Rear Speaker harness connector. Turn the ignition on. Measure for voltage between the (X303) Left Rear Speaker (+) circuit and ground. Is there any voltage present? Yes Repair the (X303) Left Rear Speaker (+) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK FOR VOLTAGE ON THE (X393) LEFT REAR SPEAKER (-) CIRCUIT Measure for voltage between the (X393) Left Rear Speaker (-) circuit and ground. Is there any voltage present? Yes Repair the (X393) Left Rear Speaker (-) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B14BC-CHANNEL 9 AUDIO SPEAKER OUTPUT CIRCUIT OPEN

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

When Monitored: Amplifier Bus wake-up. Amplifier reset with scan tool.
Set Condition: The Amplifier detects an open condition on the speaker output circuit.

Possible Causes
(X303) LEFT REAR SPEAKER (+) CIRCUIT OPEN
(X393) LEFT REAR SPEAKER (-) CIRCUIT OPEN
LEFT REAR SPEAKER
AMPLIFIER

Scheme 148

Scheme 148: Diagnostic Test

Scheme 149

Scheme 150

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14BC-CHANNEL 9 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE LEFT REAR SPEAKER Turn the ignition off. Disconnect the Left Rear Speaker harness connector. Turn the ignition on. Turn the radio on and turn the volume to 25. Adjust the speakers to the rear and center. With a voltmeter set to read in A/C voltage, measure the voltage of the Left Rear Speaker circuits in the Left Rear Speaker harness connector. Is the voltage present greater than 1 volt? Yes Replace the Left Rear Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X303) LEFT REAR SPEAKER (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C1 harness connector. Measure the resistance of the (X303) Left Rear Speaker (+) circuit between the Amplifier C1 harness connector and the Left Rear Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Go To 4 . No Repair the (X303) Left Rear Speaker (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X393) LEFT REAR SPEAKER (-) CIRCUIT FOR AN OPEN Measure the resistance of the (X393) Left Rear Speaker (-) circuit between the Amplifier C1 harness connector and the Left Rear Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Repair the (X393) Left Rear Speaker (-) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B14BD-CHANNEL 9 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER

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

When Monitored: With the ignition on. Radio volume at 25 or higher.
Set Condition: The Amplifier detects that the output circuits are shorted together.

Possible Causes
(X303) LEFT REAR SPEAKER (+) CIRCUIT SHORTED TO THE (X393) LEFT REAR SPEAKER (-) CIRCUIT
LEFT REAR SPEAKER
AMPLIFIER

Scheme 151

Scheme 151: Diagnostic Test

Scheme 152

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14BD-CHANNEL 9 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE LEFT REAR SPEAKER Turn the ignition off. Disconnect the Left Rear Speaker. Measure the resistance of the speaker between the two terminals. NOTE: The graphic shows the connector for reference only. Measure at the speaker terminals. Is the resistance of the speaker less than 1 Ohm? Yes Replace the Left Rear Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X303) LEFT REAR SPEAKER (+) CIRCUIT, AND THE (X393) LEFT REAR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Turn the ignition off. Disconnect the Amplifier C1 harness connector. Measure the resistance between the (X303) Left Rear Speaker (+) circuit, and the (X393) Left Rear Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X303) Left Rear Speaker (+) circuit, and the (X393) Left Rear Speaker (-) circuit for a short together. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B14BE-CHANNEL 10 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

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

With the ignition on.

This Diagnostic Trouble Code (DTC) sets if a Direct Current (DC) offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of four to six seconds.

Possible Causes
AMPLIFIER

Possible Causes
(X301) AMPLIFIED SUBWOOFER 2 (+) CIRCUIT SHORTED TO GROUND
(X391) AMPLIFIED SUBWOOFER 2 (-) CIRCUIT SHORTED TO GROUND
AMPLIFIED SUBWOOFER SPEAKER
AMPLIFIER

Scheme 153

Scheme 154

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14BF-CHANNEL 10 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE SUBWOOFER SPEAKER Make sure one of the front doors is still open. With the scan tool, erase the DTCs. Turn the ignition off. Disconnect the Subwoofer Speaker harness connector. Turn the ignition on. Turn the radio on and set the volume to 25. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14BF-CHANNEL10 OUTPUT CIRCUIT LOW? Yes Go To 3 . No Replace the Subwoofer Speaker. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X301) AMPLIFIED SUBWOOFER 2 (+) CIRCUIT FOR A SHORT TO GROUND Disconnect the Amplifier C1 harness connector. Disconnect the Subwoofer Speaker harness connector. Measure the resistance between ground and the (X301) Amplified Subwoofer 2 (+) circuit. Is the resistance below 10K Ohms? Yes Repair the (X301) Amplified Subwoofer 2 (+) circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 4 .
CHECK THE (X391) AMPLIFIED SUBWOOFER 2 (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X391) Amplified Subwoofer 2 (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X391) Amplified Subwoofer 2 (-) circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B14C0-CHANNEL 10 AUDIO SPEAKER OUTPUT CIRCUIT HIGH

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

When Monitored: With the ignition on.
Set Condition: The Amplifier detects a short to battery condition on the output circuit.

Possible Causes
(X301) AMPLIFIED SUBWOOFER 2 (+) CIRCUIT SHORTED TO VOLTAGE
(X391) AMPLIFIED SUBWOOFER 2 (-) CIRCUIT SHORTED TO VOLTAGE
AMPLIFIER

Scheme 155

Scheme 155: Diagnostic Test

Scheme 156

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14C0-CHANNEL 10 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK FOR VOLTAGE ON THE (X301) AMPLIFIED SUBWOOFER 2 (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C1 harness connector. Disconnect the Subwoofer Speaker harness connector. Turn the ignition on. Measure the voltage between the (X301) Subwoofer Speaker 2 (+) circuit and ground. Is there any voltage present? Yes Repair the (X301) Subwoofer Speaker 2 (+) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK FOR VOLTAGE ON THE (X391) AMPLIFIED SUBWOOFER 2 (-) CIRCUIT Measure the voltage between the (X391) Subwoofer Speaker 2 (-) circuit and ground. Is there any voltage present? Yes Repair the (X391) Subwoofer Speaker 2 (-) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B14C1-CHANNEL 10 AUDIO SPEAKER OUTPUT CIRCUIT OPEN

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

When Monitored: Amplifier Bus wake-up. Amplifier reset with scan tool.
Set Condition: The Amplifier detects an open condition on the speaker output circuit.

Possible Causes
(X301) AMPLIFIED SUBWOOFER 2 (+) CIRCUIT OPEN
(X391) AMPLIFIED SUBWOOFER 2 (-) CIRCUIT OPEN
AMPLIFIED SUBWOOFER SPEAKER
AMPLIFIER

Scheme 157

Scheme 157: Diagnostic Test

Scheme 158

Scheme 159

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14C1-CHANNEL 10 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE SUBWOOFER SPEAKER Turn the ignition off. Disconnect the Subwoofer Speaker harness connector. Turn the ignition on. Turn the radio on and turn the volume to 25. Adjust the speakers to the rear and center. With a voltmeter set to read in A/C voltage, measure the voltage of the Subwoofer Speaker circuits in the Subwoofer Speaker harness connector. Is the voltage present greater than 1 volt? Yes Replace the Subwoofer Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X301) AMPLIFIED SUBWOOFER 2 (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C1 harness connector. Measure the resistance of the (X301) Amplified Subwoofer 2 (+) circuit between the Amplifier C1 harness connector and the Subwoofer Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Go To 4 . No Repair the (X301) Amplified Subwoofer 2 (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X391) AMPLIFIED SUBWOOFER 2 (-) CIRCUIT FOR AN OPEN Measure the resistance of the (X391) Amplified Subwoofer 2 (-) circuit between the Amplifier C1 harness connector and the Subwoofer Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Repair the (X391) Amplified Subwoofer 2 (-) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B14C2-CHANNEL 10 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER

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

When Monitored: With the ignition on. Radio volume at 25 or higher.
Set Condition: The Amplifier detects that the output circuits are shorted together.

Possible Causes
(X301) AMPLIFIED SUBWOOFER 2 (+) CIRCUIT SHORTED TO THE (X391) AMPLIFIED SUBWOOFER 2 (-) CIRCUIT
AMPLIFIED SUBWOOFER SPEAKER
AMPLIFIER

Scheme 160

Scheme 160: Diagnostic Test

Scheme 161

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the rear and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14C2-CHANNEL 10 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE AMPLIFIED SUBWOOFER SPEAKER Turn the ignition off. Disconnect the Subwoofer Speaker. Measure the resistance of the speaker between the two terminals. NOTE: The graphic shows the connector for reference only. Measure between the speaker terminals. Is the resistance of the speaker less than 1 Ohm? Yes Replace the Subwoofer Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X301) AMPLIFIED SUBWOOFER 2 (+) CIRCUIT, AND THE (X391) AMPLIFIED SUBWOOFER 2 (-) CIRCUITS FOR A SHORT TOGETHER Turn the ignition off. Disconnect the Amplifier C1 harness connector. Measure the resistance between the (X301) Amplified Subwoofer 2 (+) circuit, and the (X391) Amplified Subwoofer 2 (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X301) Amplified Subwoofer 2 (+) circuit, and the (X391) Amplified Subwoofer 2(-) circuit for a short together. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B14C3-CHANNEL 11 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

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

With the ignition on.

This Diagnostic Trouble Code (DTC) sets if a Direct Current (DC) offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of four to six seconds.

Possible Causes
AMPLIFIER

Possible Causes
(X304) RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO GROUND
(X394) RIGHT REAR SPEAKER (-) CIRCUIT SHORTED TO GROUND
RIGHT REAR SPEAKER
AMPLIFIER

Scheme 162

Scheme 162: Diagnostic Test

Scheme 163

Scheme 164

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14C4-CHANNEL 11 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE RIGHT REAR SPEAKER Make sure one of the front doors is still open. With the scan tool, erase the DTCs. Turn the ignition off. Disconnect the Right Rear Speaker harness connector. Turn the ignition on. Turn the radio on and set the volume to 25. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14C4-CHANNEL 11 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 3 . No Replace the Right Rear Speaker. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X304) RIGHT REAR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Disconnect the Amplifier C2 harness connector. Disconnect the Right Rear Speaker harness connector. Measure the resistance between ground and the (X304) Right Rear Speaker (+) circuit. Is the resistance below 10K Ohms? Yes Repair the (X304) Right Rear Speaker (+) circuit for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 4 .
CHECK THE (X394) RIGHT REAR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X394) Right Rear Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X394) Right Rear Speaker (-) for a short to ground. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B14C6-CHANNEL 11 AUDIO SPEAKER OUTPUT CIRCUIT OPEN

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

When Monitored: Amplifier Bus wake-up. Amplifier reset with scan tool.
Set Condition: The Amplifier detects an open condition on the speaker output circuit.

Possible Causes
(X304) RIGHT REAR SPEAKER (+) CIRCUIT OPEN
(X394) RIGHT REAR SPEAKER (-) CIRCUIT OPEN
RIGHT REAR SPEAKER
AMPLIFIER

Scheme 165

Scheme 165: Diagnostic Test

Scheme 166

Scheme 167

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14C6-CHANNEL 11 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE RIGHT REAR SPEAKER Turn the ignition off. Disconnect the Right Rear Speaker harness connector. Turn the ignition on. Turn the radio on and turn the volume to 25. Adjust the speakers to the rear and center. With a voltmeter set to read in A/C voltage, measure the voltage of the Right Rear Speaker circuits in the Right Rear Speaker harness connector. Is the voltage present greater than 1 volt? Yes Replace the Right Rear Speaker in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X304) RIGHT REAR SPEAKER (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X304) Right Rear Speaker (+) circuit between the Amplifier C2 harness connector and the Right Rear Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Go To 4 . No Repair the (X304) Right Rear Speaker (+) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE (X394) RIGHT REAR SPEAKER (-) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X394) Right Rear Speaker (-) circuit between the Amplifier C2 harness connector and the Right Rear Speaker harness connector. Is the resistance below 2.0 Ohms? Yes Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Repair the (X394) Right Rear Speaker (-) circuit for an open. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B14C5-CHANNEL 11 AUDIO SPEAKER OUTPUT CIRCUIT HIGH

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

When Monitored: With the ignition on.
Set Condition: The Amplifier detects a short to battery condition on the output circuit.

Possible Causes
(X304) RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO VOLTAGE
(X394) RIGHT REAR SPEAKER (-) CIRCUIT SHORTED TO VOLTAGE
AMPLIFIER

Scheme 168

Scheme 168: Diagnostic Test

Scheme 169

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14C5-CHANNEL 11 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK FOR VOLTAGE ON THE (X304) RIGHT REAR SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C2 harness connector. Disconnect the Right Rear Speaker harness connector. Turn the ignition on. Measure for voltage on the (X304) Right Rear Speaker (+) circuit and ground. Is there any voltage present? Yes Repair the (X304) Right Rear Speaker (+) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK FOR VOLTAGE ON THE (X394) RIGHT REAR SPEAKER (-) CIRCUIT Measure for voltage on the (X394) Right Rear Speaker (-) circuit and ground. Is there any voltage present? Yes Repair the (X394) Right Rear Speaker (-) circuit for a short to voltage. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B14C7-CHANNEL 11 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER

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

When Monitored: With the ignition on. Radio volume at 25 or higher.
Set Condition: The Amplifier detects that the output circuits are shorted together.

Possible Causes
(X304) RIGHT REAR SPEAKER (+) CIRCUIT SHORTED TO THE (X394) RIGHT REAR SPEAKER (-) CIRCUIT
RIGHT REAR SPEAKER
AMPLIFIER

Scheme 170

Scheme 170: Diagnostic Test

Scheme 171

CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on and open one of the front doors. NOTE: A front door must remain open whenever checking or erasing Amplifier DTCs. With the scan tool, record and erase the Amplifier DTCs. Cycle the ignition switch from on to off, wait five seconds and then back to on. Turn the Radio on and set the volume to 20. Adjust the speakers to the front and center. With the scan tool, read the active Amplifier DTCs. Does the scan tool display active: B14C7-CHANNEL 11 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No 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. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .
CHECK THE OPERATION OF THE RIGHT REAR SPEAKER Turn the ignition off. Disconnect the Right Rear Speaker. Measure the resistance of the speaker between the two terminals. NOTE: The graphic shows the connector for reference only. Measure at the speaker terminals. Is the resistance of the speaker less than 1 Ohm? Yes Replace the Right Rear Speaker in accordance with the service information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Go To 3 .
CHECK THE (X304) RIGHT REAR SPEAKER (+) CIRCUIT, AND THE (X394) RIGHT REAR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance between the (X304) Right Rear Speaker (+) circuit, and the (X394) Right Rear Speaker (-) circuit. Is the resistance below 10K Ohms? Yes Repair the (X304) Right Rear Speaker (+) circuit, and the (X394) Right Rear Speaker (-) circuit for a short together. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 . No Replace the Amplifier in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «BODY VERIFICATION TEST»(ref-457926-S40044966262012030200000) for 1500, 2500 & 3500, or «BODY VERIFICATION TEST»(ref-457927-S20352278932012030200000) for 3500 CAB & CHASSIS, 4500 & 5500 .

B210D-BATTERY VOLTAGE LOW

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

With the ignition on.

If the module detects that the battery voltage is less than 9.0 volts for one second.

Possible Causes
VEHICLE CHARGING SYSTEM
RADIO

B210E-BATTERY VOLTAGE HIGH

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

With the ignition on.

If the module detects that the battery voltage is greater 16.5 volts for one second.

Possible Causes
VEHICLE CHARGING SYSTEM
AMPLIFIER

B221F-AMPLIFIER INTERNAL

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

With the ignition on.

The Amplifier detects a software checksum test failure.

Possible Causes
AMPLIFIER

B222C-VEHICLE CONFIGURATION NOT PROGRAMMED

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

With the ignition on.

Vehicle configuration information not programmed into the Instrument Cluster.

POSSIBLE CAUSES
NO COMMUNICATION WITH TOTALLY INTEGRATED POWER MODULE (TIPM)
ACTIVE TIPM DTCS
INSTRUMENT CLUSTER
TOTALLY INTEGRATED POWER MODULE (TIPM)

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

The controller detects a short to ground on the CAN Interior Bus (125K) (+) circuit or a short to voltage on the CAN Interior Bus (125K) (-) circuit.

Possible Causes
(D265) CAN INTERIOR BUS(+) (125k) CIRCUIT SHORTED TO VOLTAGE
(D264) CAN INTERIOR BUS(-) (125k) CIRCUIT SHORTED TO GROUND
(D264) CAN INTERIOR BUS(-) (125k) CIRCUIT SHORTED TO THE (D265) CAN INTERIOR BUS(+) (125k) CIRCUIT
TOTALLY INTEGRATED POWER MODULE (TIPM)
ANY CAN INTERIOR BUS MODULE

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

The controller detects a short to ground on the CAN Interior Bus (125K) (+) circuit or a short to voltage on the CAN Interior Bus (125K) (-) circuit.

Possible Causes
(D265) CAN INTERIOR BUS(+) (125k) CIRCUIT SHORTED TO VOLTAGE
(D264) CAN INTERIOR BUS(-) (125k) CIRCUIT SHORTED TO GROUND
(D264) CAN INTERIOR BUS(-) (125k) CIRCUIT SHORTED TO THE (D265) CAN INTERIOR BUS(+) (125k) CIRCUIT
TOTALLY INTEGRATED POWER MODULE (TIPM)
ANY CAN INTERIOR BUS MODULE

Continuously when the ignition is on.

The battery voltage between 10.0 and 16.0 Volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Totally Integrated Power Module (TIPM) for approximately two to five seconds.

Possible Causes
CAN BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
TOTALLY INTEGRATED POWER MODULE POWER AND GROUND
TIPM NOT CONFIGURED CORRECTLY
TOTALLY INTEGRATED POWER MODULE (TIPM)
MODULE THAT SET THIS DTC

Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fused installed.

Totally Integrated Power Module (TIPM) is configured correctly.

Bus messages not received from the Radio for approximately two to five seconds.

Possible Causes
CAN BUS CIRCUITS OPEN OR SHORTED
DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES
RADIO POWER AND GROUND
TIPM NOT CONFIGURED CORRECTLY
RADIO
MODULE THAT SET THIS DTC

Amplifier (Amp) - Electrical Diagnostics: Other RAM Pickup 2500

When Monitored

Set Condition

Possible Causes

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B146A-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

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B146C-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT HIGH

Scheme 86

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B146D-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT OPEN

Scheme 88

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B146E-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER

Scheme 91

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B146F-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

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B147B-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT HIGH

Scheme 116

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B147C-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT OPEN

Scheme 118

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Scheme 120

B147D-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER

Scheme 121

Scheme 122

B147E-CHANNEL 7 AUDIO SPEAKER OUTPUT CIRCUIT PERFORMANCE

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