Configurable Customer Control System: Diagnosis Chevrolet Malibu VI facelift

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Diagnostic Starting Point - Secondary and Configurable Customer Controls

Begin the system diagnosis with the Diagnostic System Check - Vehicle . The Diagnostic System Check - Vehicle will provide the following information

1. The identification of the control modules which command the system
2. The ability of the control modules to communicate through the serial data circuit
3. The identification of any stored DTCs and their status

The use of the Diagnostic System Check - Vehicle will identify the correct procedure for diagnosing the system and where the procedure is located.

Diagnostic Fault Information

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

DTC B3608 (3-Spoke)

Conditions for Running the DTC

1. The radio is in the ACCESSORY, RUN, or RAP power mode.
2. The system voltage is at least 9 volts and no more than 16 volts.
3. All the above conditions are present for greater than 50 ms.

Conditions for Setting the DTC

Short to voltage is present for 50 ms or longer.

Action Taken When the DTC Sets

The steering wheel control switch functions are inoperative.

Conditions for Clearing the DTC

1. The conditions for setting the DTC are no longer present.
2. A history DTC clears after 100 malfunction-free ignition cycles.
3. The radio receives the clear code command from the scan tool.

Diagnostic Aids

Before diagnosis of the steering wheel controls, ensure the primary controls of the associated component are functioning properly.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the right steering wheel control switch.
2. Ignition ON, Radio ON, test for 9.2-10 volts between the 10-volt reference circuit terminal 2 and ground. If less than the specified range, test the 10-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio. If greater than the specified range, test the 10-volt reference circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Test for 9.2-10 volts between the 10-volt reference circuit terminal 2 and the signal circuit terminal 4. If less than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the radio. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
4. Disconnect the C1 harness connector at the radio.
5. Test for infinite resistance between the signal circuit terminal A9 and ground. If not the specified value, test the signal circuit for short to ground.
6. If all circuits test normal, test or replace the steering wheel control switch.

Component Testing

1. Ignition OFF, disconnect the harness connector at the right steering wheel control switch.
2. Test for infinite resistance between the signal circuit terminal 4 and the 10-volt reference terminal 2 with the switch in the open position. If not the specified value, replace the right steering wheel control switch.
3. Test for less than 3,200 ohms of resistance between the signal circuit terminal 4 and the 10-volt reference terminal 2 with the switch in the closed position. If greater than the specified value, replace the right steering wheel control switch.

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

DTC B3608 (4-Spoke)

1. The radio is in the ACCESSORY, RUN, or RAP power mode.
2. The system voltage is at least 9 volts and no more than 16 volts.
3. All the above conditions are present for greater than 50 ms.

Short to voltage is present for 50 ms or longer.

The steering wheel control switch functions are inoperative.

1. The conditions for setting the DTC are no longer present.
2. A history DTC clears after 100 malfunction-free ignition cycles.
3. The radio receives the clear code command from the scan tool.

Before diagnosis of the steering wheel controls, ensure the primary controls of the associated component are functioning properly.

1. Ignition OFF, disconnect the harness connector at the right steering wheel control switch.
2. Ignition ON, Radio ON, test for 9.2-10 volts between the 10-volt reference circuit terminal 3 and ground. If less than the specified range, test the 10-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio. If greater than the specified range, test the 10-volt reference circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Test for 9.2-10 volts between the 10-volt reference circuit terminal 3 and the signal circuit terminal 4. If less than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the radio. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
4. Disconnect the C1 harness connector at the radio.
5. Test for infinite resistance between the signal circuit terminal A9 and ground. If not the specified value, test the signal circuit for short to ground.
6. If all circuits test normal, test or replace the steering wheel control switch.

1. Ignition OFF, disconnect the harness connector at the right steering wheel control switch.
2. Test for infinite resistance between the signal circuit terminal 4 and the 10-volt reference terminal 3 with the switch in the open position. If not the specified value, replace the right steering wheel control switch.
3. Test for less than 6800 ohms of resistance between the signal circuit terminal 4 and the 10-volt reference terminal 3 with the switch in the closed position. If greater than the specified value, replace the right steering wheel control switch.

Visual/Physical Inspection

1. Inspect for aftermarket devices which may affect the operation of the Steering Wheel Controls System. Refer to «Checking Aftermarket Accessories»(ref-269145-S35644414722007102900000) .
2. Inspect for easily accessible or visible system components for obvious damage or conditions which may cause the symptom.

Symptom List

Refer to Steering Wheel Controls Inoperative (3-Spoke) or Steering Wheel Controls Inoperative (4-Spoke) in order to diagnose the symptom.

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

Steering Wheel Controls Inoperative (3-Spoke)

1. This diagnostic is for the audio steering wheel controls.
2. Before diagnosis of the steering wheel controls, ensure the primary controls of the associated component are functioning properly.
3. Review with the schematic when testing switch resistance values.
4. If a single switch function is inoperative, test the suspect switch. Refer to «Component Testing»(ref-269170-S34603218872007102900000) .

1. Ignition OFF, disconnect the harness connector at the right steering wheel control switch.
2. Ignition ON, Radio ON, test for 9.2-10 volts between the 10-volt reference circuit terminal 2 and ground. If less than the specified range, test the 10-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio. If greater than the specified range, test the 10-volt reference circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Test for 9.2-10 volts between the 10-volt reference circuit terminal 2 and the signal circuit terminal 4. If less than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the radio. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
4. Disconnect the C1 harness connector at the radio.
5. Test for infinite resistance between the signal circuit terminal A9 and ground. If not the specified value, test the signal circuit for short to ground.
6. If all circuits test normal, test or replace the steering wheel control switch.

1. Ignition OFF, disconnect the harness connector at the right steering wheel control switch.
2. Test for infinite resistance between the signal circuit terminal 4 and the 10-volt reference terminal 2 with the switch in the open position. If not the specified value, replace the right steering wheel control switch.
3. Test for less than 3200 ohms of resistance between the signal circuit terminal 4 and the 10-volt reference terminal 2 with the switch in the closed position. If greater than the specified value, replace the right steering wheel control switch.

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

Steering Wheel Controls Inoperative (4-Spoke)

1. This diagnostic is for the audio steering wheel controls.
2. Before diagnosis of the steering wheel controls, ensure the primary controls of the associated component are functioning properly.
3. Review with the schematic when testing switch resistance values.
4. If a single switch function is inoperative, test the suspect switch. Refer to «Component Testing»(ref-269170-S12228591442007102900000) .

1. Ignition OFF, disconnect the harness connector at the right steering wheel control switch.
2. Ignition ON, Radio ON, test for 9.2-10 volts between the 10-volt reference circuit terminal 3 and ground. If less than the specified range, test the 10-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the radio. If greater than the specified range, test the 10-volt reference circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Test for 9.2-10 volts between the 10-volt reference circuit terminal 3 and the signal circuit terminal 4. If less than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the radio. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
4. Disconnect the C1 harness connector at the radio.
5. Test for infinite resistance between the signal circuit terminal A9 and ground. If not the specified value, test the signal circuit for short to ground.
6. If all circuits test normal, test or replace the steering wheel control switch.

1. Ignition OFF, disconnect the harness connector at the right steering wheel control switch.
2. Test for infinite resistance between the signal circuit terminal 4 and the 10-volt reference terminal 2 with the switch in the open position. If not the specified value, replace the right steering wheel control switch.
3. Test for less than 6800 ohms of resistance between the signal circuit terminal 4 and the 10-volt reference terminal 2 with the switch in the closed position. If greater than the specified value, replace the right steering wheel control switch.