2010 Cadillac Truck SRX FWD V6-3.0L Page 207

2010 Cadillac Truck SRX FWD V6-3.0L Page 207

3. Reconnect the harness connector at the S38 ignition mode switch.

4. Ignition ON, disconnect the harness connector at the S38 ignition mode switch.

5. Verify a test lamp illuminates between ignition mode switch terminal 6 and ground.

瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal replace the

K9 BCM.

6. Connect a test lamp between the control circuit 5 and ground.

7. Command the body control module-keyless entry control module-run/start power mode indicator test with a scan tool. The test lamp should

turn ON and OFF when changing between the commanded states.

瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If all circuits test normal, replace the K9 BCM.

瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If all circuits test normal, replace

the K9 BCM.

8. Connect a test lamp between the control circuit 2 and ground.

9. Command the body control module-keyless entry control module-accessory power mode indicator test with a scan tool. The test lamp should

turn ON and OFF when changing between the commanded states.

瀚慖f the test lamp is always ON, test the control circuit for a short to voltage. If all circuits test normal, replace the K9 BCM.

瀚慖f the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If all circuits test normal, replace

the K9 BCM.

10. If all circuits test normal, replace the S38 ignition mode switch.

Component Testing

1. Ignition OFF, disconnect the harness at the S38 ignition mode switch.

2. Place a jumper wire between ignition mode switch terminal 4 and ground.

3. Place a fused jumper wire between the circuit terminals of the ignition mode switch listed below and B+:

* Ignition mode switch terminal 2

* Ignition mode switch terminal 5

瀚慖f the either LED does not light, replace the S38 ignition mode switch.

4. Without the button pressed, test for 4,870 ohm between the ignition mode switch terminals listed below:

* Ignition mode switch terminals 3 and 7

* Ignition mode switch terminals 4 and 6

瀚慖f not the specified value, replace the S38 ignition mode switch.

5. With the button pressed, test for 1,300 ohm between the ignition mode switch terminals listed below:

* Ignition mode switch terminals 3 and 7

* Ignition mode switch terminals 4 and 6

瀚慖f not the specified value, replace the S38 ignition mode switch.

Repair Instructions

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

* Ignition and Start Switch Replacement (See: Powertrain Management/Ignition System/Sensors and Switches - Ignition System/Ignition

Switch/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, programming and setup

B101D

DTC B101D

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure