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

Cranking Signal: Testing and Inspection

DTC 43 Diagnostic Chart:




Crank Signal Circuit:






DTC 43 will set if the following condition is met:
^ Crank signal not detected at the PCM during ignition.

Test Description:
Number below refers to circled number on the diagnostic chart.

1. This checks for an open in the BLK wire between the CPP switch (manual transaxle models) or the PNP switch (automatic transaxle models) and the PCM or for a faulty PCM.

Diagnostic Aids:
An intermittent may be caused by a poor connection, rubbed through wire insulation, or a wire broken inside the insulation. Inspect hamess connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals and poor terminal-to-wire connections before component replacement.