1993 Toyota Camry

Hi there,

Thank you for the donation,

check the main EFI fuse in the fuse box under the bonnet, also get a scan done to check for any set fault codes and I would put things back as they were as well just in case there is a problem with this chip, start here and re post how you get on and if you still have a problem we can advise further.

Mark (mhpautos)

Hi there,

The mas air flow sensor, will not directly affect the ignition, but if there was a short there may be a problem with the ECU, I will find the manual tests and send them on, have you done a scan as yet and checked the main EFI fuse? I wont get access to the data base till I get home a bit later today but will be on line for a bit as I am at work just now.

Mark (mhpautos)

You don't need a scanner to get a code, bridge out TE1 & E1 at the diagnostic connector and read the flashes on the check light. The codes are read in flashes long flash is 10's short flashes are 1's so one long flash and 3 short flashes is code 13, and so on. You don't have to have the light on to have a set code. Is the ECU light on with the ignition on? And as for the after market alarm, I would have no idea as to hoe it is wired in, but this may be some of your problems, was there any wiring diagrams supplied? And check for any after market in line fuses as they may be part of this system.

Mark

Bridge out the test connector with a paper clip or a wire connector not a test light, I have not seen these chips so I am a bit unsure of how they can affect the system, I would be more inclined to remove it and look at what has failed since installing it

Mark.

Hi there,

Air flow meter tests.

Mark (mhpautos)