Rear Right Audio Speaker Output Circuit High - Base

B140E - Rear Right Audio Speaker Output Circuit High - Base






For a complete wiring diagram, refer to.

• There are two versions of the B140E DTC test. In order to select the proper test you must know if the vehicle is equipped with an Amplifier. If the vehicle is equipped an with Amplifier use the B140E-PREMIUM test. If the vehicle is not equipped with an Amplifier use the B140E-BASE test.

Theory of Operation

The (X304) Right Rear Speaker (+) circuit and the (X394) Right Rear Speaker (-) circuit are outputs of the Radio. The Radio controls and monitors these circuits for a concern.

• When Monitored: With the Radio on.

• Set Condition: The Radio detects a short to battery condition on the speaker output circuit.






Test Step 1 - CHECK FOR AN INTERMITTENT CONDITION

• Turn the ignition on and open one of the front doors.

• A front door must remain open whenever checking or erasing Radio DTCs.

• Using the scan tool, record and erase the Radio DTCs.

• Turn the Radio on.

• Adjust the speakers to the rear and center.

• Using the scan tool, read the active Radio DTCs.

Does the scan tool read: B140E-REAR RIGHT AUDIO SPEAKER OUTPUT CIRCUIT HIGH?

Yes

• Go to Test Step 2 => [ Test Step 2 - CHECK FOR VOLTAGE ON THE (X304) RIGHT REAR SPEAKER
(+) CIRCUIT ]

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 => Non-DTC Based Diagnostics. Body Interior

Test Step 2 - CHECK FOR VOLTAGE ON THE (X304) RIGHT REAR SPEAKER (+) CIRCUIT







• Turn the ignition off.

• Disconnect the Right Rear Speaker harness connector from the Right Rear Speaker.

• Disconnect the Radio harness connector.

• Turn the ignition on.

• Measure the voltage between ground and the (X304) Right Rear Speaker (+) circuit.

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 => Non-DTC Based Diagnostics. Body Interior

No

• Go to Test Step 3 => [ Test Step 3 - CHECK FOR VOLTAGE ON THE (X394) RIGHT REAR SPEAKER
(-) CIRCUIT ]

Test Step 3 - CHECK FOR VOLTAGE ON THE (X394) RIGHT REAR SPEAKER (-) CIRCUIT







• Measure the voltage between ground and the (X394) Right Rear Speaker (-) circuit.

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 => Non-DTC Based Diagnostics. Body Interior

No

• Replace the Radio.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior