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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Blower Motor Inoperative

Test 1 - 3:




Test 4 - 7:




Test 8 - 9:






SYMPTOM
BLOWER MOTOR INOPERATIVE

POSSIBLE CAUSES
- Junction block fuse #1
- Fused ignition switch output (run) circuit shorted to ground
- Blower motor shorted to ground
- Ground circuit open
- A/C - heater control open
- Blower motor driver circuit open
- Resistor-open hi blower motor driver
- Blower motor driver circuit open
- Fused ignition switch output (run) circuit open
- Blower motor open