2010 Cadillac Truck SRX AWD V6-3.0L Page 689
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Testing
DTC B3715
1. Ignition OFF, disconnect the KR12B windshield wiper relay.
2. Test for less than 5 ohm between the ground circuit terminal 85 and ground.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
3. Connect a test lamp between the control circuit terminal 86 and ground.
4. Ignition ON, command the low speed wipers ON and OFF using the S82 windshield wiper/washer switch. 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 circuit tests normal, replace
the K9 BCM.
5. If all circuits test normal, test or replace the KR12B windshield wiper relay.
DTC B3875
1. Ignition OFF, disconnect the KR12C windshield wiper speed control relay.
2. Ignition ON, verify a test lamp illuminates between B+ circuit terminal 85 and ground.
瀚慖f the test lamp does not illuminate, test or replace the underhood fuse block.
3. Connect a test lamp between the control circuit terminal 86 and B+.
4. Command the high speed wipers ON and OFF using the S82 windshield wiper/washer switch. 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 ground. 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 voltage or an open/high resistance. If the circuit tests normal, replace
the K9 BCM.
5. If all circuits test normal, test or replace the KR12C windshield wiper speed control relay.
Component Testing
Relay Test
1. Ignition OFF, disconnect the appropriate relay.
2. Test for 60-200 ohm between terminals 85 and 86.
瀚慖f the resistance is not within the specified range, replace the relay.
3. Test for infinite resistance between the following terminals:
* 30 and 86
* 30 and 87
* 30 and 85
* 85 and 87
瀚慖f not the specified value, replace the relay.
4. Test for less than 5 ohm between terminals 30 and 87A.
瀚慖f greater than the specified value, replace the relay.
5. Install a 10 A fused jumper wire between relay terminal 85 and 12 V. Install a jumper wire between relay terminal 86 and ground. Test for
less than 5 ohm between terminals 30 and 87.
瀚慖f greater than the specified range, replace the relay.
