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

Pinpoint Test 3

PINPOINT TEST 3: THE HIGH BEAM HEADLAMPS ARE INOPERATIVE

Step 1 - 4:









Normal Operation
The SJB receives power from circuit (LG/Y). The SJB sends a reference signal to the multifunction switch through circuit (LG/B). When the multifunction switch is switched to the high beam position, the voltage signal is routed to ground through circuit (B/W). When the SJB detects the multifunction switch in the headlamps ON and in the high beam position, the SJB sends voltage to the high beam headlamps.

Possible Causes
- circuit (LG/B) open
- circuit (LG/Y) open
- multifunction switch
- SJB