Honda Accord 2008 Manual page 2129

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07/11/02 09:29:27 61TA0000_220_0099

Multiplex Integrated Control System

General Troubleshooting Information

Troubleshooting CAN Circuit Related Problems

NOTE: Check the ECM/PCM for DTCs and troubleshoot ECM/PCM (see page 11-3) or F-CAN loss of communication

errors first.

Using the HDS (Preferred method)

1. Go to B-CAN System Diagnosis Test Mode A to check for ''Connected units'' and DTCs (see page 22-120).

2. If no DTCs are retrieved, go to B-CAN System Diagnosis Test Mode C (see page 22-123) or D (see page 22-124).

Using the B-CAN System Diagnosis Test Mode 1 (Use only if the HDS is unavailable) (see page

1. Check for communication circuit problems using B-CAN System Diagnostic Test Mode 1 (see page 22-120).

2. Check for DTCs.

3. Sort, and then troubleshoot the DTCs in this order.

–1 Battery voltage DTCs

–2 Internal error DTCs

–3 Loss of communication DTCs

NOTE: If the DTC U1280 is stored, troubleshoot DTC U1280 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 the failure

(see page 22-125).

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