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Home >> Cadillac Truck >> 2010 >> SRX FWD V6-3.0L >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> AF40-6 - Automatic Transmission >> Tour Mode Switch/Indicator Always On or Inoperative

Tour Mode Switch/Indicator Always On or Inoperative




Tour Mode Switch/Indicator Always On or Inoperative

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information





Typical Scan Tool Data





Circuit/System Description

The tour mode switch and the tour mode light emitting diode (LED) are combined into one switch module. The body control module (BCM) monitors the status of the tour mode switch. When the tour mode 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 tour mode LED ON to notify the driver of the selected mode.

Reference Information
Schematic Reference

Automatic Transmission Controls Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector End Views By Name)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Description and Operation

Electronic Suspension Control Description and Operation (Description and Operation)
Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

1. Verify no communication related DTC is set.

• If any communication DTC is set, diagnose those first.

2. Ignition ON, observe the scan tool Suspension System Mode parameter while pressing and releasing one after the other S48C Multi-Function Switch 1 - Instrument Panel, Sport Mode and Tour Mode. Verify the reading changes between Comfort and Sport Mode.

• If the parameter does not change between the specified values, go to circuit/system testing.

3. Observe the tour mode LED while pressing and releasing the S48C Multi-Function Switch 1 - Instrument Panel Tour Mode. The tour mode LED should turn ON and OFF.

• 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.

1. Ignition OFF, disconnect the X5 harness connector at the K9 Body Control Module.
2. Ignition ON, verify the tour mode LED is OFF.

• If the sport mode LED does not turn OFF, test the control circuit for a short to voltage.

3. If all circuits test normal, test or replace the S48C Multi-Function Switch 1 - Instrument Panel Tour Mode.

Dynamic Test

Note: Circuit/system verification must be performed before circuit/system testing.

1. Ignition OFF, disconnect the S48C Multi-Function Switch 1 - Instrument Panel harness connector.
2. Test for less than 5 ohm between tour mode switch ground circuit terminal 1 and ground.

• If not within the specified value, test the wiring harness for an open/high resistance.

3. Ignition OFF, test for more than 11 V between the control circuit terminal 3 and ground.

• If less than the specified range, test the control circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module.

4. Install a 3 A fused jumper wire to the control circuit terminal 3.
5. Ignition ON, observe the scan tool Suspension System Mode parameter while momentarily toggling the fused jumper wire to ground. Verify the reading changes between Comfort and Sport Mode.

• If the parameter does not change between the specified values, replace the K9 Body Control Module.

6. Ignition ON, test for more than 11 V between the 12V reference circuit terminal 6 and ground.

• If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module.

7. If the circuit test normal, test or replace the S48C Multi-Function Switch 1 - Instrument Panel Tour Mode.

Component Testing

Indicator Test
1. Install a 10 A fused jumper between the tour mode switch terminal 6 and 12 V. Install a jumper wire between the tour mode switch terminal 1 and ground. The indicator LED should illuminate.

• If the tour mode switch indicator does not illuminate, replace the S48C Multi-Function Switch 1 - Instrument Panel Tour Mode.

2. Test for infinite resistance between the tour mode switch terminal 3 and terminal 1.

• If not within the specified range, replace the S48C Multi-Function Switch 1 - Instrument Panel Tour Mode.

3. Test for less than 5 ohm between the tour mode switch terminal 3 and terminal 1 while pressing the S48C Multi-Function Switch 1 - Instrument Panel Tour Mode.

• If not within the specified range, replace the S48C Multi-Function Switch 1 - Instrument Panel Tour Mode.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Electronic Suspension Control Module Replacement (Service and Repair)
* Accessory Switch Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for BCM replacement, setup, and programming

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