CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. |
VEHICLE BROUGHT TO WORKSHOP |
|
2. |
CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK |
What |
Vehicle model, system name |
When |
Date, time, frequency of occurrence |
Where |
Road conditions |
Under what conditions? |
Driving conditions, weather conditions |
How did it happen? |
Problem symptoms |
|
3. |
INSPECT BATTERY VOLTAGE |
(a) Measure the battery voltage.
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
|
4. |
CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK |
|
5. |
VERIFY THAT CUSTOMER SUBSCRIPTION IS ACTIVE |
(a) Enter the VIN into Vehicle Inquiry on the Techstream and verify the subscription type and expiration date.
|
6. |
PERFORM HEALTH CHECK |
(a) Perform "Health Check" and check for current DTCs (See page
).
Result |
Proceed to |
---|---|
No DTC is output |
A |
DTC is output |
B |
PRL update required |
C |
B | ![]() |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
C | ![]() |
PERFORM PRL UPDATE |
|
7. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table (See page
).
Result |
Proceed to |
---|---|
Fault is not listed in Problem Symptoms Table |
A |
Fault is listed in Problem Symptoms Table |
B |
HINT:
If the symptom does not recur and no DTC is output, perform the symptoms reproduction
method (See page ).
B | ![]() |
GO TO STEP 9 |
|
8. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Refer to Terminals of ECU (See page ).
(b) Refer to Data List / Active Test (See page
).
|
9. |
ADJUST, REPAIR OR REPLACE |
|
10. |
CONFIRMATION TEST |
NEXT | ![]() |
END |
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use these procedures to troubleshoot the tire pressure warning system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
Air Conditioning Control Panel Circuit
DESCRIPTION
This circuit consists of the heater control assembly and air conditioning amplifier
assembly. When the heater control assembly is operated, signals are transmitted
to the air conditioning amplifier assembly through the LIN communication system ...