Workflow
OVERALL SEQUENCE
DETAILED FLOW
1.INTERVIEW CUSTOMER
Interview the customer to obtain as much information as possible about the conditions and environment under which the malfunction occurred.
>> GO TO 2.
2.SYMPTOM CHECK
Verify symptoms.
>> GO TO 3.
3.CHECK FOR DTCS
With CONSULT
Is any DTC detected?
YES >> GO TO 4.
NO >> GO TO 5.
4.PERFORM DTC DIAGNOSTIC PROCEDURE
Perform the diagnostic procedure for the detected DTC. Refer to BCS"DTC Inspection Priority Chart" or BCS "DTC Inspection Priority Chart".
>> GO TO 7.
5.OPERATION CHECK
Perform the operation check. Refer to HAC "Work Procedure".
>> GO TO 6.
6.SYMPTOM DIAGNOSIS
Check the symptom diagnosis table. Refer to HA "Symptom Table".
>> GO TO 8.
7.VERIFY REPAIR.
With CONSULT
Is any DTC detected?
YES >> GO TO 4.
NO >> GO TO 8.
8.PERFORM FINAL OPERATION CHECK
Perform the operation check. Refer to HAC "Work Procedure".
Does it operate normally?
YES >> Inspection End.
NO >> GO TO 2.
Refrigerant Cycle REFRIGERANT FLOW The refrigerant flows in the standard pattern, that is, through the compressor, the condenser with liquid tank, through the evaporator, and back to the compress ...
Description CONNECTION OF SERVICE TOOLS AND EQUIPMENT 1. Shut-off valve 2. A/C service valve 3. Recovery/recycling/recharging equipment 4. Vacuum pump 5. Manifold gauge set 6. Refrigerant con ...
U0155 Lost communication (IPC)
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
U0155
Lost Communication With Instrument
Panel Cluster (IPC)
Control Module
When the ignition switch is ON,
TCM is unable to receive the
CAN communications ...
U1000 CAN COMM
DTC Logic
DTC DETECTION LOGIC
NOTE: U1000 can be set if a module harness was disconnected and
reconnected, perhaps during a repair. Confirm that there are actual CAN
diagnostic symptoms and a present DTC by performing the Self Diagnostic Result
procedure.   ...