TL V6-3.5L (2007)
Information Bus: Reading and Clearing Diagnostic Trouble Codes
With Manufacturer's Scan Tool
General Troubleshooting Information
Troubleshooting CAN Circuit Related Problems
NOTE: Check the ECM/PCM for DTCs and troubleshoot ECM/PCM or F-CAN loss of communication errors first.
Using the HDS (Preferred method)
1. Go to B-CAN System Diagnosis Test Mode A See: Diagnostic Trouble Code Tests and Associated Procedures/Troubleshooting- B-CAN System
Diagnosis Test Mode A to check for "Connected units" and DTCs.
2. If no DTCs are retrieved, go to B-CAN System Diagnosis Test Mode C or D See: Diagnostic Trouble Code Tests and Associated
Procedures/Troubleshooting- B-CAN System Diagnosis Test Mode C or See: Diagnostic Trouble Code Tests and Associated
Procedures/Troubleshooting- B-CAN System Diagnosis Test Mode D.
Without HDS (Use only if the HDS is unavailable)
1. Check for communication circuit problems using B-CAN System Diagnosis Test Mode 1.
2. Check for DTCs while in Mode 1.
NOTE: If the problem is related to the display panel control unit or HandsFreeLink system, check for DTCs first with their own self-diagnostic
function.
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HandsFreeLink control unit self-diagnostic function.
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Display panel control unit self-diagnostic function.
3. Sort, and then troubleshoot the DTCs in the order below.
1. Battery voltage DTCs
2. Internal error DTCs
3. Loss of communication DTCs
(beginning with the lowest number first; for example, if B1006 and B1059 are retrieved, troubleshoot B1006 first)
4. Signal error DTCs
4. If no DTCs are retrieved, use B-CAN System Diagnosis Test Mode 2 to check all inputs related to failure.
Loss of Communication DTC cross-reference chart
When an ECU is unable to communicate with the other ECUs on the circuit, the other units will set loss of communication DTCs. Use this chart to find
the control unit that is not communicating.
1. Find the Transmitting Unit that is in the same row as all of the loss of communication DTCs retrieved.
