Aura L4-2.4L (2008)
Reference Information
Schematic Reference
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Data Communication Schematics (See: Diagrams/Electrical Diagrams)
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Control Module References (See: Testing and Inspection/Programming and Relearning)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Data Link Communications Description and Operation (See: Description and Operation)
Electrical Information Reference
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Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics)
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Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics)
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Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics)
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Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics)
Scan Tool References
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information.
Circuit/System Testing
1. Ignition OFF, test for less than 1.0 ohm between the DLC ground circuit terminal 5 and ground.
‹› If greater than specified, test the ground circuit for open/high resistance.
2. Disconnect the X2 harness connector at the BCM.
3. Install a 3A fused jumper wire between the BCM serial data circuit terminal 55 and the DLC terminal 1.
4. Ignition ON, attempt to communicate with the BCM. Communication should be available.
Important: Allow communications for 5 seconds after connecting a module with the jumper to determine if communication is interrupted
or not.
‹› If no communication, test the serial data circuit terminal 55 of the BCM for a short to ground, short to voltage, or an open/high resistance. If
the circuit tests normal, replace the BCM.
5. Ignition OFF, disconnect the X1 harness connector at the BCM.
6. Ignition OFF, install a 3A fused jumper wire between the BCM serial data circuit terminal 55 and the inflatable restraint sensing and diagnostic
module (SDM) terminal 2.
7. Disconnect the X1 harness connector at the folding top control module, if applicable.
8. Ignition ON, attempt to communicate with the SDM, communication should not be available.
‹› If communication is established, test the folding top control module serial data circuit terminal 2 for a short to voltage or a short to ground. If
the circuit tests normal, replace the folding top control module.
9. Ignition OFF, disconnect the harness connector at the digital radio receiver (DRR), if applicable.
10. Ignition ON, attempt to communicate with the SDM, communication should not be available.
‹› If communication is established, test the DRR serial data circuit terminal 5 for a short to voltage or a short to ground. If the circuit test normal,
replace the DRR.
11. Ignition OFF, disconnect the harness connector at the RCDLR.
12. Ignition ON, attempt to communicate with the SDM, communication should not be available.
‹› If communication is established, test the RCDLR serial data circuit terminal 2 for a short to voltage or a short to ground. If the circuit test
normal, replace the RCDLR.
13. Ignition OFF, disconnect the harness connector at the SDM.
14. Ignition ON, attempt to communicate with the BCM, communication should not be available.
‹› If communication is established, test the SDM serial data circuit terminal 32 for a short to voltage or a short to ground. If the circuit test
normal, replace the SDM.
