2010 Cadillac Truck SRX AWD V6-3.0L Page 579
* Ground circuit terminal A
* Ground circuit terminal E
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
5. Connect a test lamp between the control circuit terminal listed below and ground.
* E2LF side marker lamp-left front control circuit terminal K
* E4J park lamp-left front control circuit terminal B
* E5E tail lamp-left control circuit terminal B
6. Ignition ON, command the Left Park Lamps ON and OFF 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 the circuit tests 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 the circuits test normal, replace
the K9 BCM.
7. If all the circuits test normal, replace the appropriate left marker lamp.
Right Side Marker/Tail Lamps Malfunction
1. Disconnect the X1 harness connector at the E5F tail lamp-right.
2. Test for less than 30 ohm between the ground circuit terminal C and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition OFF, disconnect the appropriate inline harness connector listed below:
* X112 inline harness connector (With TT6/TT7/TT8)
* X116 inline harness connector (Without TT6/TT7/TT8)
4. Test for less than 30 ohm between the ground circuit terminal listed below and ground:
* Ground circuit terminal A
* Ground circuit terminal E
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
5. Connect a test lamp between the control circuit terminal listed below and ground.
* E2RF side marker lamp-right front control circuit terminal K
* E4K park lamp-right front control circuit terminal B
* E5F tail lamp-right control circuit terminal A
6. Ignition ON, command the Right Park Lamps ON and OFF 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 the circuit tests 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 the circuits test normal, replace
the K9 BCM.
7. If all the circuits test normal, replace the appropriate right marker lamp
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Tail Lamp Replacement (See: Lighting and Horns/Tail Lamp/Service and Repair)
* Headlamp Replacement (See: Lighting and Horns/Headlamp/Service and Repair/Removal and Replacement/Headlamp Replacement)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup and programming
B2600
DTC B2600 or B2605
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.
