Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Diagnostic Fault Information
Electrical DTCs
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Sport Mode Switch Signal Circuit | B0980 02 | 1 | 1 | -- |
1. Sport Mode Switch/Indicator Always ON or Inoperative | ||||
Typical Scan Tool Data
Circuit | Short to Ground | Open/High Resistance | Short to Voltage |
|---|---|---|---|
Operating Conditions: Engine running, normal operating temperature Parameter Normal Range: Comfort/Sport Mode/Normal/Hard | |||
Sport Mode Switch Signal Circuit | Undefined | -- | Undefined |
Circuit/System Description
The sport mode switch, tour mode switch, sport mode light emitting diode (LED) and tour mode LED are combined into one switch module. The body control module (BCM) monitors the sport mode switch and the tour mode switch. When either switch is pressed, the BCM will request the suspension control module, transmission control module (TCM) and engine control module (ECM) via serial data to control the vehicle ride characteristic according to the selected mode. The BCM will command the sport mode or tour mode LED ON to notify the driver of the selected mode.
Reference Information
Schematic Reference
Automatic Transmission Controls Schematics
Connector End View Reference
Electrical Information Reference
Description and Operation
Electronic Suspension Control Description and Operation
Scan Tool Reference
Circuit/System Verification
- Verify no communication related DTC is set.
- Ignition ON, observe the scan tool Suspension System Mode parameter while pressing and releasing one after the other S48C Multifunction Switch - Instrument Panel - Sport Mode and S48C Multifunction Switch - Instrument Panel - Tour Mode. Verify the reading changes between Comfort/Sport Mode/Normal/Hard.
- Observe the sport mode LED and the tour mode LED while pressing and releasing one after the other S48C Multifunction Switch - Instrument Panel - Sport Mode and S48C Multifunction Switch - Instrument Panel - Tour Mode. The sport mode LED and the tour mode LED should turn ON and OFF.
| ⇒ | If any communication DTC is set, diagnose those first. |
| ⇒ | If the parameter does not change between the specified values, go to circuit/system testing. |
| ⇒ | If the LED does not change between the specified values, go to circuit/system testing. |
Circuit/System Testing
Static Test
Note: Circuit/system verification must be performed before circuit/system testing.
| • | Ignition OFF, disconnect the X5 harness connector at the K9 Body Control Module (BCM). |
| • | Ignition ON, verify the sport mode LED is OFF. |
| ⇒ | If the sport mode LED does not turn OFF, test the control circuit for a short to voltage. |
Dynamic Test
Note: Circuit/system verification must be performed before circuit/system testing.
- Ignition OFF, disconnect the S48C Multifunction Switch - Instrument Panel harness connector.
- Ignition ON, observe the scan tool Suspension System Mode parameter while installing a 3 A fused jumper wire between the S48C Multifunction Switch - Sport Mode terminal 5 and ground. Verify the reading changes between Sport Mode/Normal/Hard.
- Ignition OFF, connect a test lamp to S48C Multifunction Switch - Instrument Panel terminal 6 and ground.
- Ignition ON, the test lamp has to illuminate while installing a 3 A fused jumper wire between the S48C Multifunction Switch - Instrument Panel terminal 5 and ground.
- Test the S48C Multifunction Switch - Sport Mode ground circuit for an open/high resistance.
- If the circuit test normal, replace the S48C Multifunction Switch - Instrument Panel.
| ⇒ | If the parameter does not change between the specified values, test the wiring harness for short to voltage or an open/high resistance. If the circuit test normal, replace the K9 Body Control Module (BCM). |
| ⇒ | If the test lamp does not illuminate, test the sport mode LED signal circuit for a short to ground or an open/high resistance. |
Repair Instructions
| • | Perform the Diagnostic Repair Verification. |
