DTC No. 33: Control Module Communication Bus Off: Troubleshooting

TROUBLESHOOTING TABLE

Step	Action	YES	NO
1	Was "Keyless Start System Check" performed?	Go to Step 2.	Go to KEYLESS START SYSTEM CHECK .
2	Control module connector check Check connection of connectors of all control modules communicating by means of CAN. Recheck keyless start control module for DTC. Is DTC No. 33 detected?	Go to Step 3.	Intermittent trouble. Check for intermittent by referring to Intermittent and Poor Connection Inspection .
3	CAN communication circuit check Turn ignition switch to OFF position. Disconnect connectors of all control modules communicating by means of CAN. Check CAN communication circuit between control modules for open, short and high resistance. Is each CAN communication circuit in good condition?	Go to Step 4.	Repair circuit.
4	DTC check of keyless start control module Turn ignition switch to OFF position. Connect connectors of disconnected control modules communicating by means of CAN. Disconnect connector of any one control module other than keyless start control module. Recheck keyless start control module for DTC. Is DTC No. 33 detected?	Using same method, disconnect connectors of control module other than keyless start control module one by one to check if DTC No. 33 is detected. If DTC No. 33 is detected even though connector of control module other than keyless start control module is disconnected, substitute a known-good keyless start control module and recheck.	Check power and ground circuit of disconnected control module. If circuit is OK, substitute a known-good disconnected control module and recheck.