Camaro V8-6.2L (2010)
‹› If greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition ON, test for less than 4.5 V between the serial data circuit terminal 1 and ground.
‹› If greater than the specified range, test the serial data circuit for a short to voltage. Refer to Testing the Serial Data Circuit for a Short to
Voltage.
5. Ignition OFF for 60 seconds, test for greater than 100 ohm between the serial data circuit terminal 1 and ground.
‹› If less than the specified range, test the serial data circuit for a short to ground. Refer to Testing the Serial Data Circuits for a Short to ground.
6. Disconnect the harness connector at the first splice pack closest in the circuit to the DLC.
7. Test for less than 2 ohm between the DLC serial data circuit terminal 1 and the splice pack connector serial data input terminal.
‹› If greater than the specified range, test the serial data circuit for an open/high resistance. If the circuit tests normal, replace the splice pack.
Testing the Serial Data Circuits for a Short to Voltage
1. Ignition OFF, disconnect the appropriate harness connectors at the following components:
*
All low speed serial data splice packs
*
Any module or component between that may be between the splice packs
2. Ignition ON, test for less than 4.5 V between the DLC serial data circuit terminal 1 and ground.
‹› If greater than the specified range, repair the short to voltage.
3. Test for less than 4.5 V between each serial data circuit at each component connector and ground.
‹› If greater than the specified range, perform the appropriate test listed below:
*
Serial data circuits with one control module, test the serial data circuit for a short to voltage. If the circuit tests normal, replace the control
module.
*
Serial data circuits with 2 or more control modules, test each section of the serial data circuit for a short to voltage. If the circuits test normal,
replace the control module that causes the short to voltage when connected.
Testing the Serial Data Circuits for a Short to Ground
1. Ignition OFF, disconnect the appropriate harness connectors at the following components:
*
All low speed serial data splice packs
*
Any module or component between that may be between the splice packs
2. Test for infinite resistance between the DLC serial data circuit terminal 1 and ground.
‹› If not the specified value, repair the short to ground.
3. Ignition OFF for 60 seconds, test for greater than 100 ohm between each serial data circuit at the splice pack and ground.
‹› If less than the specified range, perform the appropriate test listed below:
*
Serial data circuits with one control module, test the serial data circuit for a short to ground. If the circuit tests normal, replace the control
module.
*
Serial data circuits with 2 or more control modules, test each section of the serial data circuit for a short to ground. If the circuits test normal,
replace the control module that causes the short to ground when connected.
Testing the Serial Data Circuit for an Open/High Resistance
1. If equipped with a second splice pack, ignition ON, verify the scan tool communicates with one or more control modules connected to the second
splice pack.
‹› If all control modules on the second splice pack do not communicate, test the serial data circuit between the first and second splice packs for
an open/high resistance. If the circuit tests normal, test the second splice pack for an open/high resistance. If the splice pack tests normal,
replace any module or component that may be between those two splice packs.
2. If equipped with a third splice pack, ignition ON, verify the scan tool communicates with one or more control modules connected to the third
splice pack.
