1993 Mazda MX3 Repair Question
Mazda MX3 Terminal Problem
Refer to chart
thank you for diagrams......not quite sure about step 6 what is voltage supposed to be...with key on or off...dist connected or not...and step 5 how do you check for ground?...step 8 with dist disconnected but is key on or off?..thank you
When checking voltage, the ignition must be ON.
When checking for ground it means check for shorts. One end of ohmmeter to wire/terminals and the other to body.
Is your vehicle Federal or California Specifications?
its federal......just dont know when it says is voltage ok what is voltage supposed to be?
is there an easy way to check and see if internal voltage regulator is working correctly?
Sorry for the delay in replying. Was away for the past week.
Here are the pin voltage chart.
thanks for diagrams...did step 6 ...(tested ecu terminal voltage from dist.)...it was 5 volts with key on but stayed 5 volts at idle it didnt drop to 1.5V like it should......the 2E terminal was at 5V with key on and dropped to 2V at idle.like it should......there is continuity between dist. wire and ecu......step 7 tested at 5V and it says replace dist.however when performing step 8 there is no voltage and it says replace ecu...does step 7 superceed step 8 because it tested at 5V and it says replace dist....if it were you which one would you replace?
Any fault with the ECU takes precedence over others.
Anyway step 6 showed voltage, why does the voltage disappears when measured at ECU?
it asks for the dist. connector to be disconnected...im assuming thats why there is no voltage...also distributors are sold with or without modules what does that mean? and could it be just a bad module in dist. and i dont need to replace entire thing.?
If the module comes separately, you can just replace that because the problem is only within the module circuit. However you need to check/test the wiring circuit within the distributor as it could be bad wires as they become brittle over time and any movement of them can result in breakages/poor continuuity.