F2–150
ON-BOARD DIAGNOSTIC
DTC P0512
A6E407001082236
DTC P0512 Engine switch circuit malfunction
DETECTION
CONDITION
• PCM monitors input voltage from engine switch while engine is running. If input voltage from engine switch
is B+ when engine speed is 1,200 rpm or above, PCM determines engine switch circuit malfunction.
POSSIBLE
CAUSE
• Engine switch malfunction
• Connector or terminal malfunction
• Short to power circuit in wiring between engine switch terminal A and PCM terminal 57
• PCM malfunction
ENGINE SWITCH
F
A
MAIN FUSE
E
F
C
D
A
B
57
57
PCM
4
2
2
3
5
ENGINE SWITCH
HARNESS SIDE CONNECTOR
PCM
HARNESS SIDE CONNECTOR
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