SEAT HEATER SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

VEHICLE BROUGHT TO WORKSHOP

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INSPECT AUXILIARY BATTERY VOLTAGE

If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.

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INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

1. Use the intelligent tester to check if the LIN communication system is functioning normally.

   Table 1. Result

   Result	Proceed to
   LIN DTC is not output	A
   LIN DTC is output	B

   
   
   • B
   • Go to LIN COMMUNICATION SYSTEM (See pageClick here)
   • A

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

1. Use the intelligent tester to check if the CAN communication system is functioning normally.

   Table 2. Result

   Result	Proceed to
   CAN DTC is not output	A
   CAN DTC is output (for LHD)	B
   CAN DTC is output (for RHD)	C

   
   
   • B
   • Go to CAN COMMUNICATION SYSTEM (See pageClick here)
   • C
   • Go to CAN COMMUNICATION SYSTEM (See pageClick here)
   • A

CHECK FOR DTC*

1. Check for DTCs (see pageClick here).

2. Clear the DTCs (see pageClick here).

3. Recheck for DTCs (see pageClick here).

   Table 3. Result

   Result	Proceed to
   DTC does not reoccur	A
   DTC reoccurs	B

   
   
   • B
   • Go to step 9
   • A

PROBLEM SYMPTOMS TABLE

• B
• Go to step 9
• A

OVERALL ANALYSIS AND TROUBLESHOOTING*

1. Data List / Active Test (see pageClick here).

2. Terminals of ECU (see pageClick here).

3. Operation Check (see pageClick here).

   
   
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REPAIR OR REPLACE

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CONFIRMATION TEST

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• END