| Last Modified: 11-29-2007 | 1.6 D | |
| Service Category: Vehicle Interior | Section: Heating/Air Conditioning | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002VX4004X |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING (2008 Sequoia) | ||
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
- Use these procedures to troubleshoot the air conditioning system.
- *: Use the Techstream.
|
1. |
VEHICLE BROUGHT TO WORKSHOP |
|
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2. |
INSPECT BATTERY VOLTAGE |
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
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3. |
CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Use the Techstream 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 |
| B |
|
GO TO CAN COMMUNICATION SYSTEM |
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4. |
CHECK FOR DTC* |
(a) Check for DTCs and note any codes that are output
.
(b) Clear the DTC
.
(c) Recheck for DTCs. Based on the DTCs output above, try to force output of the air conditioning system DTC by simulating the operation indicated by the DTC.
Result
|
Result |
Proceed to |
|---|---|
|
DTC is not output |
A |
|
DTC is output |
B |
| B |
|
GO TO STEP 7 |
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5. |
PROBLEM SYMPTOMS TABLE |
(a) 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 |
| B |
|
GO TO STEP 7 |
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6. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Actuator Check
(b) Data List/Active Test
(c) Terminals of ECU
(d) On-vehicle Inspection
(e) Inspection
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7. |
ADJUST, REPAIR OR REPLACE |
| NEXT |
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END |
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