RL V6-3.5L (2007)
Information Bus: Diagnostic Trouble Code Tests and Associated Procedures
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
MPCS service connector 07WAZ-001010A
Test Mode 1
Do this diagnosis if the HDS is not available.
1. Check the No. 7 (10 A) fuse and No. 21 (10 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 left kick panel, and the driver's dashboard under cover.
3. Turn the ignition switch ON (II), and move the interior lights switch to the "DOOR" position.
4. Connect the MPCS service connector (A) to the MCIC socket (B) in the driver's under-dash fuse/relay box.
5. Wait 5 seconds, and watch the map lights. When the system enters Mode 1, the front and rear map lights will flash quickly once, and a double
beep will be heard.
6. If there is a DTC, the map lights and ignition key light will blink, pause, then repeat the DTC as long as the ignition switch is ON (II).
Is there a repeating DTC?
YES - Count the blinks, then go to step 7.
NO - Go to step 8.
7. About 1 second after you go into self-diagnostic Mode 1, the map lights will indicate the DTC, and repeat it every 3 seconds. If there is more than
one DTC, the system will indicate them in ascending order, beginning with the DTC with the lowest numerical value. Troubleshoot the DTCs as
indicated below:
-
DTC 2, 3, 4 and 5 simultaneously: Check for an open in the LT GRN wire between MICU D11 and relay control module J7, LT GRN wire
