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)

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Symptom Related Diagnostic Procedures

Radiator Fan Control Unit Input Test

NOTE: Before performing input test, do the following:

1. Check fuse No. 24 (40A), 26 (4OA), 35 (15A), 39 (2OA) and No. 40 (20A) in the Under Hood Relay Box and fuse No. 9 (1OA) and 17 (1OA) in the Under Dash Fuse Box.
2. Disconnect 10P connector from Radiator Fan Control Unit and turn ignition switch ON.

NOTE:
- Any abnormality found during input test must be corrected before continuing.
- If all tests produce desired result substitute a known good radiator fan control unit.