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

Cabin Temperature Sensor / Switch

In Car Temperature Sensor (Cabin Temperature Sensor)
Aspirating engine 12V, approx. 50 mA

Voltage supply, aspirating engine
pin No. 4 (from ACC control module)
Ground, aspirating engine
grounding point G8
Signal voltage, temperature sensor (NTC)
pin No. 3 (from ACC control module)
Ground, temperature sensor (NTC)
pin No. 2 (from ACC control module)

0 °C (32 °F) 30.0 - 34.9 kOhm
10 °C (50 °F) 18.5 - 21.1 kOhm
20 °C (68 °F) 11.8 - 13.2 kOhm
25 °C (77 °F) 9.5 - 10.5 kOhm
30 °C (86 °F) 7.6 - 8.5 kOhm
40 °C (104 °F) 5.0 - 5.7 kOhm