RDX AWD L4-2.3L Turbo (2010)
Information Bus: Initial Inspection and Diagnostic Overview
How to Troubleshoot the Multiplex Integrated Control System
Troubleshooting CAN Circuit Related Problems
NOTE: Check the PCM for DTCs and troubleshoot PCM See: Testing and Inspection/Initial Inspection and Diagnostic Overview or F-CAN loss of
communication errors first.
Using the HDS (Preferred method)
1. Connect the HDS to the DLC.
2. There are two ways to read the B-CAN code with the HDS.
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First method; If multiple DTCs are stored, be sure to follow the instructions in B-CAN system diagnosis, Test Mode A See: Component Tests
and General Diagnostics/Troubleshooting - B-CAN System Diagnosis Test Mode A.
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Second method; If no DTCs are retrieved, use B-CAN System Diagnostic Test Mode 2 See: Component Tests and General
Diagnostics/Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (Without the HDS) to check all inputs related to
failure.
Using the B-CAN System Diagnosis Test Mode 1 (Use only if the HDS is unavailable)
1. Check for communication circuit problems using B-CAN System Diagnostic Test Mode 1 See: Component Tests and General
Diagnostics/Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (Without the HDS).
2. Check for DTCs.
3. If multiple DTCs are stored, sort them, and then troubleshoot the DTCs in this order.
1. Battery voltage DTCs
2. Internal error DTCs
3. Loss of communication DTCs
NOTE: If DTC B1000 is stored, troubleshoot DTC B1000 See: Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures/B
Code Charts/B1000 first.
4. Signal error DTCs
4. If no DTCs are retrieved, use B-CAN System Diagnostic Test Mode 2 to check all inputs related to failure See: Component Tests and General
Diagnostics/Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (Without the HDS).
How to Display DTCs on the MID of the Gauge Control Module
Enter B-CAN System Diagnosis Test Mode 1 See: Component Tests and General Diagnostics/Troubleshooting - B-CAN System Diagnosis Test Mode 1
and Test Mode 2 (Without the HDS). While in Test Mode 1, when communication between the MICU and the gauge control module is normal, the
DTCs which have been detected and stored individually by various B-CAN (Body-controller Area Network) units will be shown one by one on the
multi-information display. To scroll through the DTCs, press the SEL/RESET button.
