Currently also have the bcm interceptor & bcm fooler installed also and running with no issues..
I noticed with the cold temp here dipping below 0 degrees... i was getting a
I i have since fixed the p1658 error
I believe this was caused by a difference in temps between the 4 battery temp sensors & the ptc strip sensor...
I've bypasses the thermel sensors with resistors, for the 4 battery stick sensors.. I used 1 3k resistor.. brings the temp to 20+ degress on the obd2 gauge..
for the Ptc strip i used a .24ohm resistor to fake room temp there also..
I will have days.. i've noticed colder day where the p1444 code will come on.. and days where its a tad warmer where it doesn't at all.. i don't know if the p1444 has anything at all to do with my temp sensor mod... but it sure did eliminate the p1658 code...
by using fixed resistors i was able to also maintain full assist & regen power no matter the temp..
any ideas what it can be
2002 honda Insight 5spd
Mima/BCM Fooler/BCM Interceptor/50s2p 40Ah A123/30% current mod/1000w charger
To Do: Install PP50 Bms, Charge plug, Warm Air Intake, led & hid lights
.24 ohms sounds way to low for a PTC spoof. You should be able to run anywhere from 8 - ~390 ohms before getting a P1449 code. That low value might be the source of the code.
Also, PTC strips aren't used in temp calculations, only for emergency shutoff in the case of high heat (150F+). I have the four temp sensor spread over my custom pack and have had no issues with temp related codes.
I concur with Mark re the ptc strips and you should not really spoof the 4 x temp sensors but put them in your A123 pack, then the stock BCM can give a level of protection and the OBDIIC&C gauge can also report the temperature.
OBDIIC&C $50 inc software, pcb, switch and obdii plug.
IMAC&C HCH1 $50 inc software and pcb.
Wondering here: Are you sure the code you saw was a P1658, [for that code indicates as an ETCS Control Relay 'ON' Malfunction, for an 'Electronic Throttle Control System'// Not certain but I thought all we had was just the cable vs. any 'by wire' throttle control. ]
At a guess, could the code above reported have been a misreading of the screen, i.e. reading a number '5' for a letter 'B' as in DTC P16B8 which would make for a 'Mode Signal Circuit High Input' IMA code??
If so, i add the material below just in case as it may be a possibly immediate safety hazard given the combination reported with a DTC P1444, a.k.a. High Voltage Short Circuit.
ref: Repair Manual, Advanced Diagnostics, page 316, DTC P16B8 (06):MODE SIGNAL CIRCUIT 1 HIGH INPUT
The ECM (engine control module) sends the IMA control mode signals
(MAMOD1) to the MCM (motor control module) by the pulse width modulation (PWM) signal duty. The signal duty is converted into voltage via an integrator circuit in the MCM, and the CPU reads it as analog data. The duty that is used for control is set between 10 % - 90 % (equivalent to 0.5 V - 4.5 V), so it stays out of the range when a malfunction such as an open in the signal wire or a short to ground occurs. If the MCM reads voltage higher than a set range, an open in the signal wire is detected and a DTC is stored. ////
"ENABLE CONDITIONS CHART
The voltage converted in the MCM circuit is 4.741 V or more for at least 2 seconds." ///
[a full read of the diagnostics and charts around those pages would be good]
As P1444 code indicates as a High Voltage Short Circuit, and as the above P1658 may possibly have been misread with P16B8 indicating a possible short to ground, ... then perhaps check your wiring for a loose connection.
fwiw: For a better protection of the wires passing through the holes, you could try cutting a length* of rubber hose [*matching the circumference of the hole] lengthwise, so to replace the light plastic wire loom dressing assumed used as seen in the pics circling the holes. The plastic may wear easily over time with vibrations and not bear up as well as the thicker rubber hose material.
Maybe good also to tape the wires too and cable-tie them down securely so there is no flexing possible to loosen connections and/or short etc.
I did some testing recently and the P1449 IMA light wasn't thrown until 1000 ohms of PTC resistance.
Also, PTC resistance had no effect on assist/regen right up until the IMA light, which was surprising. The four thermistors did, however. Above ~120F, all assist/regen was cut off on any single thermistor. If any single thermistor became more than about 50 degrees warmer than the rest, the IMA light was thrown. However, if all four thermistors were the same temperature, no IMA light was thrown - all the way up to 170F!
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