Audio System & Video System - Electrical Diagnostics: Other Jeep Compass I

Monitor Conditions

1. When Monitored
2. With the radio on.

Set Conditions

1. Set Condition
2. When the output circuit is LOW for more than three seconds.

Possible Causes

Scheme 9

Scheme 10

1. INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Radio DTCs. Does the scan tool display active: B1402-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK FOR VOLTAGE ON THE (X201) SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Radio C1 harness connector. Disconnect the Left Front Speaker harness connector. Measure for voltage on the (X201) Speaker (+) circuit. Is the voltage above 10.0 volts? Yes Repair the (X201) Speaker (+) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK FOR VOLTAGE ON THE (X291) SPEAKER (-) CIRCUIT Measure for voltage on the (X291) Speaker (-) circuit. Is the voltage above 10.0 volts? Yes Repair the (X291) Speaker (-) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the radio in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the radio on.

1. Set Condition
2. When the output circuit is open for more than three seconds. The radio will not set the fault if the radio confirms an amplifier is on the BUS.

Scheme 11

Scheme 12

1. INTERMITTENT CONDITION Turn the ignition on. With the scan tool, clear all Audio DTC's. Turn the radio on. With the scan tool, read the DTC information. Does the scan tool read: B1403-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. (X201) (X291) SPEAKER OUTPUT CIRCUITS Turn the ignition off. Disconnect the Radio C1 harness connector. Disconnect the Front Left Audio Speaker connector. Measure the resistance of each speaker (X201)(+) and (X291)(-) circuit between the radio and the speaker. Is the resistance below 5.0 ohms for each circuit? Yes Go To 3 . No Repair the applicable output speaker circuit for an open condition. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
3. SPEAKER Turn the ignition off. Disconnect the Front Left Audio Speaker. Turn the ignition on. Turn the radio on. With the scan tool, clear all Audio DTC's. With the scan tool, read the DTC information. Does the scan tool read: B1403-FRONT LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Replace the speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Test Complete.

Scheme 13

1. When Monitored
2. With the radio on.

1. Set Condition
2. When the output circuit is LOW for more than three seconds.

Scheme 14

Scheme 15

1. INTERMITTENT CONDITION Turn the ignition on. With the scan tool, clear all Audio DTC's. Turn the radio on. With the scan tool, read the DTC information. Does the scan tool read: B1405-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. (X202) (X292) SPEAKER OUTPUT CIRCUITS Turn the ignition off. Disconnect the Radio C1 harness connector. Disconnect the Front Right Audio Speaker connector. Measure the resistance between ground and each speaker (X202)(+) and (X292)(-) circuit. Is the resistance below 1000.0 ohms for each circuit? Yes Repair the applicable speaker (+) or (-) output circuit for a short to ground condition. No Go To 3 .
3. SPEAKER Turn the ignition off. Disconnect the Front Right Audio Speaker. Turn the ignition on. Turn the radio on. With the scan tool, clear all Audio DTC's. With the scan tool, read the DTC information. Does the scan tool read: B1405-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Replace the speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Test Complete.

Scheme 16

Scheme 17

1. INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Radio DTCs. Does the scan tool display active: B1406-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK FOR VOLTAGE ON THE (X202) SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Radio C1 harness connector. Disconnect the Right Rear Speaker harness connector. Measure for voltage on the (X202) Speaker (+) circuit. Is the voltage above 10.0 volts? Yes Repair the (X202) Speaker (+) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK FOR VOLTAGE ON THE (X292) SPEAKER (-) CIRCUIT Measure for voltage on the (X292) Speaker (-) circuit. Is the voltage above 10.0 volts? Yes Repair the (X292) Speaker (-) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the radio in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the radio on.

1. Set Condition
2. When the output circuit is open for more than three seconds. The radio will not set the fault if the radio confirms an amplifier is on the BUS.

Scheme 18

Scheme 19

1. INTERMITTENT CONDITION Turn the ignition on. With the scan tool, clear all Audio DTC's. Turn the radio on. With the scan tool, read the DTC information. Does the scan tool read: B1407-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. (X202) (X292) SPEAKER OUTPUT CIRCUITS Turn the ignition off. Disconnect the radio C1 harness connector. Disconnect the Front Right Audio Speaker connector. Measure the resistance of each speaker (X202)(+) and (X292)(-) circuit between the Radio and the Speaker. Is the resistance below 5.0 ohms for each circuit? Yes Go To 3 . No Repair the applicable Output Speaker circuit for an open condition. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
3. SPEAKER Turn the ignition off. Disconnect the Front Right Audio Speaker. Turn the ignition on. Turn the radio on. With the scan tool, clear all Audio DTC's. With the scan tool, read the DTC information. Does the scan tool read: B1407-FRONT RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Replace the Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Test Complete.

Scheme 20

1. When Monitored
2. With the radio on.

1. Set Condition
2. When the output circuit is LOW for more than three seconds.

Scheme 21

Scheme 22

1. INTERMITTENT CONDITION Turn the ignition on. With the scan tool, clear all Audio DTC's. Turn the radio on. With the scan tool, read the DTC information. Does the scan tool read: B1409-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. (X51) (X57) SPEAKER OUTPUT CIRCUITS Turn the ignition off. Disconnect the Radio C1 harness connector. Disconnect the Rear Left Audio Speaker connector. Measure the resistance between ground and each speaker (X51)(+) and (X57)(-) circuit. Is the resistance below 1000.0 ohms for each circuit? Yes Repair the applicable speaker (+) or (-) output circuit for a short to ground condition. No Go To 3 .
3. SPEAKER Turn the ignition off. Disconnect the Rear Left Audio Speaker. Turn the ignition on. Turn the radio on. With the scan tool, clear all Audio DTC's. With the scan tool, read the DTC information. Does the scan tool read: B1409-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Replace the speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Test Complete.

Scheme 23

Scheme 24

1. INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Radio DTCs. Does the scan tool display active: B140A-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK FOR VOLTAGE ON THE (X303) SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Radio C1 harness connector. Disconnect the Left Rear Speaker harness connector. Measure for voltage on the (X51) Speaker (+) circuit. Is the voltage above 10.0 volts? Yes Repair the (X51) Speaker (+) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK FOR VOLTAGE ON THE (X393) SPEAKER (-) CIRCUIT Measure for voltage on the (X57) Speaker (-) circuit. Is the voltage above 10.0 volts? Yes Repair the (X57) Speaker (-) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the radio in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the radio on.

1. Set Condition
2. When the output circuit is open for more than three seconds. The radio will not set the fault if the radio confirms an amplifier is on the BUS.

Scheme 25

1. INTERMITTENT CONDITION Turn the ignition on. With the scan tool, clear all Audio DTC's. Turn the radio on. With the scan tool, read the DTC information. Does the scan tool read: B140B-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. (X51) (X57) SPEAKER OUTPUT CIRCUITS Turn the ignition off. Disconnect the Radio C1 harness connector. Disconnect the Rear Left Audio Speaker connector. Measure the resistance of each speaker (X51)(+) and (X57)(-) circuit between the radio and the speaker. Is the resistance below 5.0 ohms for each circuit? Yes Go To 3 . No Repair the applicable output speaker circuit for an open condition. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
3. Speaker Turn the ignition off. Disconnect the Rear Left Audio Speaker. Turn the ignition on. Turn the radio on. With the scan tool, clear all Audio DTC's. With the scan tool, read the DTC information. Does the scan tool read: B140B-REAR LEFT AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Replace the speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Test Complete.

Scheme 26

1. When Monitored
2. With the radio on.

1. Set Condition
2. When the output circuit is LOW for more than three seconds.

Scheme 27

Scheme 28

1. INTERMITTENT CONDITION Turn the ignition on. With the scan tool, clear all Audio DTC's. Turn the radio on. With the scan tool, read the DTC information. Does the scan tool read: B140D-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. (X52) (X58) SPEAKER OUTPUT CIRCUITS Turn the ignition off. Disconnect the Radio C1 harness connector. Disconnect the Rear Right Audio Speaker connector. Measure the resistance between ground and each speaker (X52)(+) and (X58)(-) circuit. Is the resistance below 1000.0 ohms for each circuit? Yes Repair the applicable speaker (+) or (-) output circuit for a short to ground condition. No Go To 3 .
3. SPEAKER Turn the ignition off. Disconnect the Rear Right Audio Speaker. Turn the ignition on. Turn the radio on. With the scan tool, clear all Audio DTC's. With the scan tool, read the DTC information. Does the scan tool read: B140D-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Replace the speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Test Complete.

Scheme 29

Scheme 30

1. INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Radio DTCs. Does the scan tool display active: B140E-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK FOR VOLTAGE ON THE (X52) SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Radio C1 harness connector. Disconnect the Right Rear Speaker harness connector. Measure for voltage on the (X52) Speaker (+) circuit. Is the voltage above 10.0 volts? Yes Repair the (X52) Speaker (+) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK FOR VOLTAGE ON THE (X58) SPEAKER (-) CIRCUIT Measure for voltage on the (X58) Speaker (-) circuit. Is the voltage above 10.0 volts? Yes Repair the (X58) Speaker (-) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the radio in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the radio on.

1. Set Condition
2. When the output circuit is open for more than three seconds. The Radio will not set the fault if the radio confirms an amplifier is on the BUS.

Scheme 31

1. INTERMITTENT CONDITION Turn the ignition on. With the scan tool, clear all Audio DTC's. Turn the radio on. With the scan tool, read the DTC information. Does the Scan Tool read: B140F-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. (X52) (X58) SPEAKER OUTPUT CIRCUITS Turn the ignition off. Disconnect the Radio C1 harness connector. Disconnect the Rear Right Audio Speaker connector. Measure the resistance of each speaker (X52)(+) and (X58)(-) circuit between the radio and the speaker. Is the resistance below 5.0 ohms for each circuit? Yes Go To 3 . No Repair the applicable Output Speaker circuit for an open condition. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
3. SPEAKER Turn the ignition off. Disconnect the Rear Right Audio Speaker. Turn the ignition on. Turn the radio on. With the scan tool, clear all Audio DTC's. With the scan tool, read the DTC information. Does the scan tool read: B140F-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Replace the speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Test Complete.

1. When Monitored: Continuously with the ignition on and the Radio Cassette player turned on.

1. Set Condition: The code will set when a damaged Cassette is placed in the Cassette Player.

1. When Monitored
2. Continuously with the ignition on and the radio CD player turned on.

1. Set Condition
2. The code will set if a CD that is not formatted as a music CD is installed in the radio CD player.

1. When Monitored: Continuously with the ignition on and the DVD player turned on.

1. Set Condition: The code will set if a DVD that is not formatted as a DVD is installed in the DVD player.

1. When Monitored: Continuously with the ignition on and the DVD player turned on.

1. Set Condition: The code will set if a DVD that is not formatted as a DVD is installed in the DVD player.

1. When Monitored: Continuously with the ignition on and the DVD player turned on.

1. Set Condition: The code will set if a DVD that is not formatted as a DVD is installed in the DVD player.

1. When Monitored: Continuously with the ignition and Radio on.

1. Set Condition: The code will set if the temperature inside the Radio is above +65°C ( +145°F )

1. When Monitored: Continuously with the ignition and Radio on.

1. Set Condition: The code will set if the temperature inside the Radio is above +65°C ( +145°F )

1. When Monitored: With the ignition on and the Radio in Video mode.

1. Set Condition: With the Radio in Video mode, the Radio does not detect a VES Video Screen.

1. When Monitored: With the ignition on and the Radio in seek mode.

1. Set Condition: With the Radio in seek mode for two loops around the band. The Radio does not detect an Antenna connection or does not receive a Radio station signal.

1. When Monitored: With the ignition on and the Radio in Navigation mode.

1. Set Condition: With the Radio in Navigation mode. The Radio does not detect an Antenna connection or does not receive a Navigation (GPS) signal.

1. When Monitored
2. With the ignition on and the Satellite Radio in seek mode.

1. Set Condition
2. With the radio in seek mode for two loops around the band. The radio does not detect an antenna connection or does not receive a radio satellite signal.

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The Satellite Radio Antenna detects a software checksum test failure.

1. When Monitored
2. With the ignition on.

1. Set Condition
2. This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of 5 ±1 sec.

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The amplifier detects a shorted to ground condition on the speaker output circuit.

Scheme 32

Scheme 33

Scheme 34

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1461-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE (X209) AMPLIFIED LEFT FRONT I/P SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Disconnect the Amplifier C1 harness connector. Disconnect the Left I/P Speaker harness connector. Measure the resistance between ground and the (X209) Amplified Left Front I/P Speaker (+) circuit. Is the resistance below 10K ohms? Yes Repair the (X209) Amplified Left Front I/P Speaker (+) circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X299) AMPLIFIED LEFT FRONT I/P SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X299) Amplified Left Front I/P Speaker (-) circuit. Is the resistance below 10K ohms? Yes Repair the (X299) Amplified Left Front I/P Speaker (-) for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 4 .
4. CHECK OPERATION OF THE AMPLIFIED LEFT FRONT I/P SPEAKER Turn the ignition off. Reconnect and reinstall the Left Front I/P Speaker. Measure the resistance of the speaker circuit between the Amplifier C1 harness connector and ground. Is the resistance below 10K ohms? Yes Replace the Left Front I/P Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the Amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

Scheme 35

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The amplifier detects a short to battery condition on the output circuit.

Scheme 36

Scheme 37

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1462-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK FOR VOLTAGE ON THE (X209) AMPLIFIED LEFT 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 for voltage on the (X209) Amplified Left I/P Speaker (+) circuit. Is the voltage above 10.0 volts? Yes Repair the (X209) Amplified Left I/P Speaker (+) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK FOR VOLTAGE ON THE (X299) AMPLIFIED LEFT I/P SPEAKER (-) CIRCUIT Measure for voltage on the (X299) Amplified Left I/P Speaker (-) circuit. Is the voltage above 10.0 volts? Yes Repair the (X299) Amplified Left I/P Speaker (-) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

Scheme 38

1. When Monitored
2. Amplifier BUS wake-up. Amplifier reset with scan tool.

1. Set Condition
2. The amplifier detects an open condition on the speaker output circuit.

Scheme 39

Scheme 40

Scheme 41

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on. Turn the radio on. With the scan tool, erase Amplifier DTCs. With the scan tool, reset the amplifier. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1463-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE OPERATION OF THE LEFT FRONT I/P SPEAKER Disconnect the Left I/P Speaker harness connector. Turn the radio on and turn the volume to mid level. 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 «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X209) AMPLIFIED LEFT I/P SPEAKER (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C1 harness connector. Measure the resistance of the (X209) Amplified Left I/P Speaker (+) circuit between the Amplifier C1 harness connector and the Amplified Left I/P Speaker harness connector. Is the resistance below 5.0 ohms? Yes Go To 4 . No Repair the (X209) Amplified Left I/P Speaker (+) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
4. CHECK THE (X299) AMPLIFIED LEFT I/P SPEAKER (-) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C1 harness connector. Measure the resistance of the (X299) amplified Left I/P Speaker (-) circuit between the Amplifier C1 harness connector and the Amplified Left I/P Speaker harness connector. Is the resistance below 5.0 ohms? Yes Replace the Amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Repair the (X299) Amplified Left I/P Speaker (-) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the ignition on. Radio volume at 25 or higher.

1. Set Condition
2. The amplifier detects that the output circuits are shorted together.

Scheme 42

Scheme 43

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, erase Amplifier DTCs. Turn the radio on. Turn the volume level to 25. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1464-CHANNEL 1 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE OPERATION OF THE AMPLIFIED LEFT I/P SPEAKER Disconnect the Amplified Left I/P Speaker. Measure the resistance of the speaker between the two terminals. Is the resistance of the speaker less than 1 ohm? Yes Replace the Amplified Left I/P Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X209) AMPLIFIED LEFT I/P SPEAKER (+) CIRCUIT, AND THE (X299) AMPLIFIED LEFT I/P SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Turn the ignition off. Disconnect the Amplifier C1 harness connector. Measure the resistance between the (X209) Amplified Left I/P Speaker (+) circuit, and the (X299) Amplified Left I/P Speaker (-) circuit. Is the resistance below 10K ohms? Yes Repair the (X209) Amplified Left I/P Speaker (+) circuit, and the (X299) Amplified Left I/P Speaker (-) circuit for a short together. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the ignition on.

1. Set Condition
2. This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of 5 ±1 sec.

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The amplifier detects a shorted to ground condition on the speaker output circuit.

Scheme 44

Scheme 45

Scheme 46

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1466-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE (X208) AMPLIFIED RIGHT FRONT I/P SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Disconnect the Amplifier C1 harness connector. Disconnect the Right Front I/P Speaker harness connector. Measure the resistance between ground and the (X208) Amplified Right Front I/P Speaker (+) circuit. Is the resistance below 10K ohms? Yes Repair the (X208) Amplified Right Front I/P Speaker (+) circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X298) AMPLIFIED RIGHT FRONT I/P SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X298) Amplified Right Front I/P Speaker (-) circuit. Is the resistance below 10K ohms? Yes Repair the (X298) Amplified Right Front I/P Speaker (-) for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 4 .
4. CHECK OPERATION OF THE AMPLIFIED RIGHT FRONT I/P SPEAKER Turn the ignition off. Reconnect and reinstall the Right Front I/P Speaker. Measure the resistance of the speaker circuit between the Amplifier C1 harness connector and ground. Is the resistance below 10K ohms? Yes Replace the Right Front I/P Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

Scheme 47

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The amplifier detects a short to battery condition on the output circuit.

Scheme 48

Scheme 49

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1467-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. 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 on the (X208) Amplified Right I/P Speaker (+) circuit. Is the voltage above 10.0 volts? Yes Repair the (X208) Amplified Right I/P Speaker (+) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
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. Is the voltage above 10.0 volts? Yes Repair the (X298) Amplified Right I/P Speaker (-) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

Scheme 50

1. When Monitored
2. Amplifier BUS wake-up. Amplifier reset with scan tool.

1. Set Condition
2. The amplifier detects an open condition on the speaker output circuit.

Scheme 51

Scheme 52

Scheme 53

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on. Turn the radio on. With the scan tool, erase Amplifier DTCs. With the scan tool, reset the amplifier. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1468-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE OPERATION OF THE RIGHT FRONT I/P SPEAKER Disconnect the Right I/P Speaker harness connector. Turn the radio on and turn the volume to mid level. 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 «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
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 C2 harness connector and the Amplified Right I/P Speaker harness connector. Is the resistance below 5.0 ohms? Yes Go To 4 . No Repair the (X208) Amplified Right I/P Speaker (+) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
4. CHECK THE (X298) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C1 harness connector. 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 5.0 ohms? Yes Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Repair the (X298) Amplified Right I/P Speaker (-) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

Scheme 54

1. When Monitored
2. With the ignition on. Radio volume at 25 or higher.

1. Set Condition
2. The amplifier detects that the output circuits are shorted together.

Scheme 55

Scheme 56

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, erase Amplifier DTCs. Turn the radio on. Turn the volume level to 25. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1469-CHANNEL 2 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE OPERATION OF THE AMPLIFIED RIGHT I/P SPEAKER Disconnect the Amplified Right I/P Speaker. Measure the resistance of the speaker between the two 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 «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X208) AMPLIFIED RIGHT I/P SPEAKER (+) CIRCUIT, AND THE (X298) AMPLIFIED RIGHT I/P SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Turn the ignition off. 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 «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the ignition on.

1. Set Condition
2. This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of 5 ±1 sec.

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The amplifier detects a shorted to ground condition on the speaker output circuit.

Scheme 57

Scheme 58

Scheme 59

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B146B-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE (X153) AMPLIFIED LEFT FRONT DOOR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Disconnect the Amplifier C2 harness connector. Measure the resistance between ground and the (X153) Amplified Left Front Door Speaker (+) circuit. Is the resistance below 10K ohms? Yes Repair the (X153) Amplified Left Front Door Speaker (+) circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X155) AMPLIFIED LEFT FRONT DOOR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X155) Amplified Left Front Door Speaker (-) circuit. Is the resistance below 10K ohms? Yes Repair the (X155) Amplified Left Front Door Speaker (-) for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 4 .
4. CHECK OPERATION OF THE AMPLIFIED LEFT FRONT DOOR SPEAKER Turn the ignition off. Reconnect and reinstall the Left Front Door Speaker. Measure the resistance of the speaker circuit between the Amplifier C2 harness connector and ground. Is the resistance below 10K ohms? Yes Replace the Left Front Door Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

Scheme 60

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The amplifier detects a short to battery condition on the output circuit.

Scheme 61

Scheme 62

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B146C-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK FOR VOLTAGE ON THE (X153) AMPLIFIED LEFT FRONT DOOR SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C2 harness connector. Disconnect the Amplified Left Front Door Speaker harness connector. Turn the ignition on. Measure for voltage on the (X153) Amplified Left Front Door Speaker (+) circuit. Is the voltage above 10.0 volts? Yes Repair the (X153) Amplified Left Front Door Speaker (+) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK FOR VOLTAGE ON THE (X155) AMPLIFIED LEFT FRONT DOOR SPEAKER (-) CIRCUIT Measure for voltage on the (X155) Amplified Left Front Door Speaker (-) circuit. Is the voltage above 10.0 volts? Yes Repair the (X155) Amplified Left Front Door Speaker (-) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. Amplifier BUS wake-up. Amplifier reset with scan tool.

1. Set Condition
2. The amplifier detects an open condition on the speaker output circuit.

1. When Monitored
2. With the ignition on. Radio volume at 25 or higher.

1. Set Condition
2. The amplifier detects that the output circuits are shorted together.

Scheme 63

Scheme 64

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, erase Amplifier DTCs. Turn the radio on. Turn the volume level to 25. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B146E-CHANNEL 3 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE OPERATION OF THE AMPLIFIED LEFT FRONT DOOR SPEAKER Disconnect the Amplified Left Front Door Speaker. Measure the resistance of the speaker between the two terminals. Is the resistance of the speaker less than 1 ohm? Yes Replace the Amplified Left Front Door Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X153) AMPLIFIED LEFT FRONT DOOR SPEAKER (+) CIRCUIT, AND THE (X155) AMPLIFIED LEFT FRONT DOOR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance between the (X153) Amplified Left Front Door Speaker (+) circuit, and the (X155) Amplified Left Front Door Speaker (-) circuit. Is the resistance below 10K ohms? Yes Repair the (X153) Amplified Left Front Door Speaker (+) circuit, and the (X155) Amplified Left Front Door Speaker (-) circuit for a short together. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the ignition on.

1. Set Condition
2. This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of 5 ±1 sec.

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The amplifier detects a shorted to ground condition on the speaker output circuit.

Scheme 65

Scheme 66

Scheme 67

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1470-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE (X154) AMPLIFIED RIGHT FRONT DOOR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Disconnect the Amplifier C2 harness connector. Disconnect the Right Front Door Speaker harness connector. Measure the resistance between ground and the (X154) Amplified Right Front Door Speaker (-) circuit. Is the resistance below 10K ohms? Yes Repair the (X154) Amplified Left Front Door Speaker (-) circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X156) AMPLIFIED RIGHT FRONT DOOR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X156) Amplified Right Front Door Speaker (+) circuit. Is the resistance below 10K ohms? Yes Repair the (X156) Amplified Right Front Door Speaker (+) for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 4 .
4. CHECK OPERATION OF THE AMPLIFIED RIGHT FRONT DOOR SPEAKER Turn the ignition off. Reconnect and reinstall the Right Front Door Speaker. Measure the resistance of the speaker circuit between the Amplifier C2 harness connector and ground. Is the resistance below 10K ohms? Yes Replace the Right Front Door Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

Scheme 68

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The amplifier detects a short to battery condition on the output circuit.

Scheme 69

Scheme 70

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1471-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK FOR VOLTAGE ON THE (X154) AMPLIFIED RIGHT FRONT DOOR SPEAKER (-) CIRCUIT Turn the ignition off. Disconnect the Amplifier C2 harness connector. Disconnect the Amplified Right Front Door Speaker harness connector. Turn the ignition on. Measure for voltage on the (X154) Amplified Right Front Door Speaker (-) circuit. Is the voltage above 10.0 volts? Yes Repair the (X154) Amplified Right Front Door Speaker (-) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK FOR VOLTAGE ON THE (X156) AMPLIFIED RIGHT FRONT DOOR SPEAKER (+) CIRCUIT Measure for voltage on the (X156) Amplified Right Front Door Speaker (+) circuit. Is the voltage above 10.0 volts? Yes Repair the (X156) Amplified Right Front Door Speaker (+) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

Scheme 71

1. When Monitored
2. Amplifier BUS wake-up. Amplifier reset with scan tool.

1. Set Condition
2. The amplifier detects an open condition on the speaker output circuit.

Scheme 72

Scheme 73

Scheme 74

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on. Turn the radio on. With the scan tool, erase Amplifier DTCs. With the scan tool, reset the amplifier. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1472-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE OPERATION OF THE RIGHT FRONT DOOR SPEAKER Disconnect the Right Front Door Speaker harness connector. Turn the radio on and turn the volume to mid level. With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Right Front Door Speaker circuits in the Amplified Right Front Door Speaker harness connector. Is the voltage present greater than 1 volt? Yes Replace the Amplified Right Front Door Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X154) AMPLIFIED RIGHT FRONT DOOR SPEAKER (-) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X154) Amplified Right Front Door Speaker (-) circuit between the Amplifier C2 harness connector and the Amplified Right Front Door Speaker harness connector. Is the resistance below 5.0 ohms? Yes Go To 4 . No Repair the (X154) Amplified Right Front Door Speaker (-) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
4. CHECK THE (X156) AMPLIFIED RIGHT FRONT DOOR SPEAKER (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X156) Amplified Right Front Door Speaker (+) circuit between the Amplifier C2 harness connector and the Amplified Right Front Door Speaker harness connector. Is the resistance below 5.0 ohms? Yes Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Repair the (X156) Amplified Right Front Door Speaker (+) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

Scheme 75

1. When Monitored
2. With the ignition on. Radio volume at 25 or higher.

1. Set Condition
2. The amplifier detects that the output circuits are shorted together.

Scheme 76

Scheme 77

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, erase Amplifier DTCs. Turn the radio on. Turn the volume level to 25. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1473-CHANNEL 4 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE OPERATION OF THE AMPLIFIED RIGHT FRONT DOOR SPEAKER Disconnect the Amplified Right Front Door Speaker. Measure the resistance of the speaker between the two terminals. Is the resistance of the speaker less than 1 ohm? Yes Replace the Amplified Right Front Door Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X154) AMPLIFIED RIGHT FRONT DOOR SPEAKER (-) CIRCUIT, AND THE (X156) AMPLIFIED RIGHT FRONT DOOR SPEAKER (+) CIRCUITS FOR A SHORT TOGETHER Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance between the (X154) Amplified Right Front Door Speaker (-) circuit, and the (X156) Amplified Right Front Door Speaker (+) circuit. Is the resistance below 10K ohms? Yes Repair the (X154) Amplified Right Front Door Speaker (-) circuit, and the (X156) Amplified Right Front Door Speaker (+) circuit for a short together. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the ignition on.

1. Set Condition
2. This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of 5 ±1 sec.

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The amplifier detects a shorted to ground condition on the speaker output circuit.

Scheme 78

Scheme 79

Scheme 80

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1475-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE (X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT FOR A SHORT TO GROUND Disconnect the Amplifier C2 harness connector. Disconnect the Left Rear Speaker harness connector. Measure the resistance between ground and the (X205) Amplified Left Rear Speaker (+) circuit. Is the resistance below 10K ohms? Yes Repair the (X205) Amplified Left Rear Speaker (+) circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X295) Amplified Left Rear Speaker (-) circuit. Is the resistance below 10K ohms? Yes Repair the (X295) Amplified Left Rear Speaker (-) for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 4 .
4. CHECK OPERATION OF THE AMPLIFIED LEFT REAR SPEAKER Turn the ignition off. Reconnect and reinstall the Left Rear Speaker. Measure the resistance of the speaker circuit between the Amplifier C2 harness connector and ground. Is the resistance below 10K ohms? Yes Replace the Left Rear Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The amplifier detects a short to battery condition on the output circuit.

Scheme 81

Scheme 82

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1476-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK FOR VOLTAGE ON THE (X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C2 harness connector. Disconnect the Amplified Left Rear Speaker harness connector. Turn the ignition on. Measure for voltage on the (X205) Amplified Left Rear Speaker (+) circuit. Is the voltage above 10.0 volts? Yes Repair the (X205) Amplified Left Rear Speaker (+) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK FOR VOLTAGE ON THE (X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUIT Measure for voltage on the (X295) Amplified Left Rear Speaker (-) circuit. Is the voltage above 10.0 volts? Yes Repair the (X295) Amplified Left Rear Speaker (-) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. Amplifier BUS wake-up. Amplifier reset with scan tool.

1. Set Condition
2. The amplifier detects an open condition on the speaker output circuit.

Scheme 83

Scheme 84

Scheme 85

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on. Turn the radio on. With the scan tool, erase Amplifier DTCs. With the scan tool, reset the amplifier. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1477-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE OPERATION OF THE LEFT REAR SPEAKER Disconnect the Left Rear Speaker harness connector. Turn the radio on and turn the volume to mid level. With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Left Rear Speaker circuits in the Amplified Left Rear Speaker harness connector. Is the voltage present greater than 1 volt? Yes Replace the Amplified Left Rear Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X205) Amplified Left Rear Speaker (+) circuit between the Amplifier C2 harness connector and the Amplified Left Rear Speaker harness connector. Is the resistance below 5.0 ohms? Yes Go To 4 . No Repair the (X205) Amplified Left Rear Speaker (+) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
4. CHECK THE (X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X295) Amplified Left Rear Speaker (-) circuit between the Amplifier C2 harness connector and the Amplified Left Rear Speaker harness connector. Is the resistance below 5.0 ohms? Yes Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Repair the (X295) Amplified Left Rear Speaker (-) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the ignition on. Radio volume at 25 or higher.

1. Set Condition
2. The amplifier detects that the output circuits are shorted together.

Scheme 86

Scheme 87

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, erase Amplifier DTCs. Turn the radio on. Turn the volume level to 25. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B1478-CHANNEL 5 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE OPERATION OF THE AMPLIFIED LEFT REAR SPEAKER Disconnect the Amplified Left Rear Speaker. Measure the resistance of the speaker between the two terminals. Is the resistance of the speaker less than 1 ohm? Yes Replace the Amplified Left Rear Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X205) AMPLIFIED LEFT REAR SPEAKER (+) CIRCUIT, AND THE (X295) AMPLIFIED LEFT REAR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance between the (X205) Amplified Left Rear Speaker (+) circuit, and the (X295) Amplified Left Rear Speaker (-) circuit. Is the resistance below 10K ohms? Yes Repair the (X205) Amplified Left Rear Speaker (+) circuit, and the (X295) Amplified Left Rear Speaker (-) circuit for a short together. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the ignition on.

1. Set Condition
2. This DTC will set if a DC offset occurs on the output channel, the amplifier shall set a DTC after a maturity rate of 5 ±1 sec.

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The amplifier detects a shorted to ground condition on the speaker output circuit.

Scheme 88

Scheme 89

Scheme 90

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B147A-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT LOW? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE (X206) AMPLIFIED 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 (X206) Amplified Right Rear Speaker (+) circuit. Is the resistance below 10K ohms? Yes Repair the (X206) Amplified Right Rear Speaker (+) circuit for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X296) AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (X296) Amplified Right Rear Speaker (-) circuit. Is the resistance below 10K ohms? Yes Repair the (X296) Amplified Right Rear Speaker (-) for a short to ground. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 4 .
4. CHECK OPERATION OF THE AMPLIFIED RIGHT REAR SPEAKER Turn the ignition off. Reconnect and reinstall the Right Rear Speaker. Measure the resistance of the speaker circuit between the Amplifier C2 harness connector and ground. Is the resistance below 10K ohms? Yes Replace the Right Rear Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The amplifier detects a short to battery condition on the output circuit.

Scheme 91

Scheme 92

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B147B-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT HIGH? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK FOR VOLTAGE ON THE (X206) AMPLIFIED RIGHT REAR SPEAKER (+) CIRCUIT Turn the ignition off. Disconnect the Amplifier C2 harness connector. Disconnect the Amplified Right Rear Speaker harness connector. Turn the ignition on. Measure for voltage on the (X206) Amplified Right Rear Speaker (+) circuit. Is the voltage above 10.0 volts? Yes Repair the (X206) Amplified Right Rear Speaker (+) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK FOR VOLTAGE ON THE (X296) AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUIT Measure for voltage on the (X296) Amplified Right Rear Speaker (-) circuit. Is the voltage above 10.0 volts? Yes Repair the (X296) Amplified Right Rear Speaker (-) circuit for a short to voltage. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. Amplifier BUS wake-up. Amplifier reset with scan tool.

1. Set Condition
2. The amplifier detects an open condition on the speaker output circuit.

Scheme 93

Scheme 94

Scheme 95

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on. Turn the radio on. With the scan tool, erase Amplifier DTCs. With the scan tool, reset the amplifier. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B147C-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT OPEN? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE OPERATION OF THE RIGHT REAR SPEAKER Disconnect the Right Rear Speaker harness connector. Turn the radio on and turn the volume to mid level. With a voltmeter set to read in A/C voltage, measure the voltage of the Amplified Right Rear Speaker circuits in the Amplified Right Rear Speaker harness connector. Is the voltage present greater than 1 volt? Yes Replace the Amplified Right Rear Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X206) AMPLIFIED RIGHT REAR SPEAKER (+) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X206) Amplified Right Rear Speaker (+) circuit between the Amplifier C2 harness connector and the Amplified Right Rear Speaker harness connector. Is the resistance below 5.0 ohms? Yes Go To 4 . No Repair the (X206) Amplified Right Rear Speaker (+) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
4. CHECK THE (X296) AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUIT FOR AN OPEN Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance of the (X296) Amplified Right Rear Speaker (-) circuit between the Amplifier C2 harness connector and the Amplified Right Rear Speaker harness connector. Is the resistance below 5.0 ohms? Yes Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Repair the (X296) Amplified Right Rear Speaker (-) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the ignition on. Radio volume at 25 or higher.

1. Set Condition
2. The amplifier detects that the output circuits are shorted together.

Scheme 96

Scheme 97

1. CHECK FOR AN INTERMITTENT CONDITION Turn the ignition on, then off, and then on again. With the scan tool, clear Amplifier DTCs. Turn the radio on. Turn the volume level to 25. With the scan tool, read Amplifier DTCs. Does the scan tool display active: B147D-CHANNEL 6 AUDIO SPEAKER OUTPUT CIRCUIT SHORTED TOGETHER? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK THE OPERATION OF THE AMPLIFIED RIGHT REAR SPEAKER Disconnect the Amplified Right Rear Speaker. Measure the resistance of the speaker between the two terminals. Is the resistance of the speaker less than 1 ohm? Yes Replace the Amplified Right Rear Speaker in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Go To 3 .
3. CHECK THE (X206) AMPLIFIED RIGHT REAR SPEAKER (+) CIRCUIT, AND THE (X296) AMPLIFIED RIGHT REAR SPEAKER (-) CIRCUITS FOR A SHORT TOGETHER Turn the ignition off. Disconnect the Amplifier C2 harness connector. Measure the resistance between the (X206) Amplified Right Rear Speaker (+) circuit, and the (X296) Amplified Right Rear Speaker (-) circuit. Is the resistance below 10K ohms? Yes Repair the (X206) Amplified Right Rear Speaker (+) circuit, and the (X296) Amplified Right Rear Speaker (-) circuit for a short together. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Replace the amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. With the ignition on.

1. Set Condition
2. The Satellite Radio Receiver detects a software checksum test failure.

1. When Monitored
2. Continuously.

1. Set Condition
2. Whenever the CAN B BUS (+) or B BUS (-) circuit is open, shorted to voltage or shorted to ground, this code will set.

Scheme 98

Scheme 99

1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase DTCs. Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display: U0019-CAN B BUS CIRCUIT? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK TOTALLY INTEGRATED POWER MODULE DTCs With the scan tool, read Totally Integrated Power Module DTCs Does the scan tool display any CAN B BUS DTCs - ACTIVE? Yes Refer to the symptom list for problems related to Communication in the «ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS»(ref-304334-S35563214642008110700000) article. No Go to 3 .
3. CAN B BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the Amplifier C1 harness connector. Disconnect the Totally Integrated Power Module C3 harness connector. Measure the resistance of the (D55) CAN B BUS (+) circuit between the Totally Integrated Power Module C3 harness connector and the Amplifier C1 harness connector. Is the resistance below 2.0 ohms? Yes Go To 4 . Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Repair the CAN B BUS (+) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
4. CAN B BUS (-) CIRCUIT OPEN Measure the resistance of the (D54) CAN B BUS (-) circuit between the Totally Integrated Power Module C3 harness connector and the Amplifier C1 harness connector. Is the resistance below 2.0 ohms? Yes Replace the Amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Repair the CAN B BUS (-) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .

1. When Monitored
2. Continuously.

1. Set Condition
2. Whenever the CAN B BUS (+) or B BUS (-) circuit is open, shorted to voltage or shorted to ground, this code will set.

Scheme 100

Scheme 101

1. TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase DTCs. Cycle the ignition from on to off 3 times. Turn the ignition on. With the scan tool, read DTCs. Does the scan tool display: U0020-CAN B BUS OFF PERFORMANCE? Yes Go To 2 . No The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
2. CHECK FRONT CONTROL MODULE DTCs With the scan tool, read Totally Integrated Power Module DTCs. Does the scan tool display any CAN B BUS DTCs - ACTIVE? Yes Refer to the symptom list for problems related to Communication in the «ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS»(ref-304334-S35563214642008110700000) article . No Go to 3 .
3. CAN B BUS (+) CIRCUIT OPEN Turn the ignition off. Disconnect the Amplifier C1 harness connector. Disconnect the Totally Integrated Power Module C3 harness connector. Measure the resistance of the (D55) CAN B BUS (+) circuit between the Totally Integrated Power module C3 harness connector and the Amplifier C1 harness connector. Is the resistance below 2.0 ohms? Yes Go To 4 . Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Repair the CAN B BUS (+) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .
4. CAN B BUS (-) CIRCUIT OPEN Measure the resistance of the (D54) CAN B BUS (-) circuit between the Totally Integrated Power Module C3 harness connector and the Amplifier C1 harness connector. Is the resistance below 2.0 ohms? Yes Replace the Amplifier in accordance with the service information. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) . No Repair the CAN B BUS (-) circuit for an open. Perform «BODY VERIFICATION TEST - VER 1»(ref-304334-S29410035802008110700000) .