TL FWD V6-3.5L (2009)
Information Bus: Component Tests and General Diagnostics
Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (without the HDS)
Troubleshooting - B-CAN System Diagnosis Test Mode 1 and Test Mode 2 (without the HDS)
Special Tools Required
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MPCS (MCIC) service connector 07WAZ-001010A
Test Mode 1
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, then do this diagnosis if the HDS is not available.
1. Check the No. 15 (10 A) fuse in the under-hood fuse/relay box and No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box.
Are the fuses OK?
YES - Go to step 2.
NO - Find and repair the cause of the blown fuse.
2. Remove the driver's dashboard undercover. See: Body and Frame/Interior Moulding / Trim/Dashboard / Instrument Panel/Service and
Repair/Driver's Dashboard Undercover Removal/Installation
3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, and move the ceiling light switch to the middle
(door) position.
4. Connect the MPCS service connector (A) to the MICU service check connector socket (B) in the driver's under-dash fuse/relay box.
5. Wait 5 seconds, and watch the ceiling light. When the ceiling light flashes quickly once and then goes off, the system is in Test Mode 1.
6. Check for B-CAN DTCs indicated by the multi-information display (MID) on the gauge control module while still in Test Mode 1. Press the
SEL/RESET button to display the next code. After you get to the last code, the display shows END. If no DTCs are stored, the display will read
NO. See: Initial Inspection and Diagnostic Overview
Are any DTCs indicated?
YES - Go to step 7.
NO - Go to step 10.
7. Record all DTCs and sort them.
8. Troubleshoot the DTCs in this order:
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Battery voltage DTCs
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Internal error DTCs
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Loss of communication DTCs
-
Signal error DTCs
