2008 cx-7 no start no crank no codes
learn to use a volt meter,
find the stopping point, on most cars it is.
All fuses good, skip none. we test them.
battery good and charged overnight.
FAILS IN PARK AND NEUTRAL BOTH?<<HUMMMMMMMM
The IMMO lamp talks to you, tells you it likes the key or not
told in all Users manuals for this car <read that?
paths (for sure this car, PCM runs starter RELAY) I see the schematic.
IGN.key, IMMO box>>>BCM?> tells IMMO is happy to>PCM >
and PCM knows tranny is in park or neutral and is GO for cranks.
if NOT?
the PCM blocks you. (Bad tranny switches)! starter relay DEAD.
the PCM happy (and immo) the PCM closes the STARTER RELAY. and bam it cranks fast even 300RPM crank shaft fast)
IF STARTER MOTOR IS IS DEAD, THE RELAY IS NOW HEARD TO CLICK (DOES IT)????? a 2 person test ,see?
1 at key 2nd at relay ear new it . heard.
------------------------------------- now way2.
ONE CAN HOT WIRE ANY STARTER, MADE
IN PARK +EMG brake hard set , we chock the Front wheels.
then get access to the stater motor solenoid(on its side)
right side front of engine,facing same.
there 3 lugs , 2 huge(or 1) and 1 tiny
remove Mr. tiny, and jump tiny to big outboard LUG (battery PLUS)
grrrrrrrrrrrrrrgrrrrrrrrrrrrrrrrrrrrrrr (car is safe key off)
if battery is good the starter spins. if chatters or just licks battery is dead or starter is dead, one can jump start car too.
---------------------------------easy no? ----------------------------------
now the volt meter. way. easy as pie.
the only hard part is learning the art of back probing wires.
we start to test 3 ways. (end, middle or keyside)<< wire paths
best is in the middle but luck (fate) always wins this saga.
at the starter relay we probe its 4 pins. (a skill set here)
Using 1 of 2 Ignition keys, IMMO happy via cluster light happy)
crank it.
cranked, 12vdc across its coil pins. if not the PCM end is not happy.
if yes the PCM is happy (wow just one test and now I know all that , yes.)
and 12vdc at relay contact input (if not fuses are blown !!!)
then key on cranked again, see this.
and keyed crank, the output contact goes to 12vdc and makes it all the way the tiny starter pin. if not this wire is broken relay to stater solenoid or solenoid is dead, but is not the HOT wire test passes.
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NO CODES my guess is done wrong.?
OBD2 connected and working,
crank for 10 full seconds.
release key ,not off
wait for up to 5min for the tool to see all cranking errors!
now you see them even battery voltage fails and more.
if lucky, but some cars can't see crank errors. IMMO YES!
codes (DTC)
immobilizer system B1600/1/2 ,bad key. got 2 keys , like it had new:
some IMMo do not block cranks only blocks fuel.(or spark)
my online schematics for this car STINKS , horrible coverage
or could do 10x better.
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