VEHICLE BROUGHT TO WORKSHOP

INSPECT BATTERY VOLTAGE

CHECK COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)*

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

CHECK FOR DTC*

PROBLEM SYMPTOMS TABLE

OVERALL ANALYSIS AND TROUBLESHOOTING*

ADJUST, REPAIR OR REPLACE

Inspect the battery voltage.

• Standard voltage:
• 11 to 14 V

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

Use the intelligent tester to check if the Multiplex Communication System (MPX) is functioning normally.

• Result:

• Result	Proceed to
  MPX DTC is not output	A
  MPX DTC is output	B

Use the intelligent tester to check if the CAN Communication System is functioning normally.

• Result:

• Result	Proceed to
  CAN DTC is not output	A
  CAN DTC is output	B

Check for DTCs and note any codes that are output.

Delete the DTCs.

Recheck for DTCs. Based on the DTCs output above, try to force output of the A/C system DTC by simulating the operation indicated by the DTC.

• Result:

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

Refer to the problem symptoms table .

• Result:

• Result	Proceed to
  Fault is not listed in problem symptoms table	A
  Fault is listed in problem symptoms table	B

Actuator Check

DATA LIST / ACTIVE TEST

Terminals of ECU

On-vehicle Inspection

Inspection