Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

System Response Chart

Dual Zone Air Conditioning Response (Part 1):




Dual Zone Air Conditioning Response Chart (Part 2):




Dual Zone Air Conditioning Response Chart (Part 3):





Do tests in sequence shown.

Conditions
a. Engine warm and running at idle

b. Temperature outside vehicle at 8°C (48°F) or higher

Notes:

1. If engine was recently running, a purge delay of approximately 20 seconds may be encountered before a selected mode is activated. This delay is normal and is designed to prevent windshield fogging.

2. To prevent windshield frosting during cold start up and cool outside temperatures, system delays selected operation modes until engine is warm (except when defrost is selected).

3. If the results are NOT as illustrated in the Response Chart Refer to the Diagnostic Code and Symptom Table for diagnosis guidance. Testing and Inspection