Operation CHARM: Car repair manuals for everyone.
Home >> Mazda >> 2007 >> B3000 V6-3.0L >> Repair and Diagnosis >> Starting and Charging >> Starting System >> Ignition Switch >> Testing and Inspection >> Pinpoint Tests >> Pinpoint Tests >> Pinpoint Test 3
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: DTC B1555 - IGNITION RUN CIRCUIT FAILURE OR NO POWER IN RUN

Step 1-Step 3:




Step 4:




Normal Operation
The ignition switch RUN circuit provides fused battery voltage along circuits (W/O), (BR/Y) and (V/G) to the smart junction box (SJB) when the key is in the RUN position.

Possible Causes
- Fuse
- Circuit open
- Ignition switch
- SJB

CAUTION: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.
pro multis · About Operation CHARM