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katflap · 08-26-2016, 01:06 PM

Tested on an RX3 that is running well with no errors

In the manual It states, before doing anything else, to verify That the ECM is powering up.

The procedure is on page 49.

In the procedure it refers to the connector pins of the ECU, these can be found on page 38 & 39. The pins appear to be correctly labelled.

My results from following their procedure are -

Step 1, 12.94v (stated range 12.2v - 13.5v)

Step 2, 12.6v (stated range 12.2v - 13.5v)

Step 3, 0 ohms ( stated range below 2 ohms)

Step 4, 0 ohms ( stated range below 2 ohms)

---------------------------------------------------------

J2-18, voltage comes directly from the battery

J2-15, voltage comes from the Ignition switch via the "engine run" switch.
This particular wire also provides the voltage to energize the fuel pump relay.

J2-2 & J1- 9 , go to ground.

this first test seems good

08-26-2016, 01:06 PM	#4
katflap Join Date: Jan 2015 Location: England Posts: 382	Testing The Manual part 1 Tested on an RX3 that is running well with no errors In the manual It states, before doing anything else, to verify That the ECM is powering up. The procedure is on page 49. In the procedure it refers to the connector pins of the ECU, these can be found on page 38 & 39. The pins appear to be correctly labelled. My results from following their procedure are - Step 1, 12.94v (stated range 12.2v - 13.5v) Step 2, 12.6v (stated range 12.2v - 13.5v) Step 3, 0 ohms ( stated range below 2 ohms) Step 4, 0 ohms ( stated range below 2 ohms) --------------------------------------------------------- J2-18, voltage comes directly from the battery J2-15, voltage comes from the Ignition switch via the "engine run" switch. This particular wire also provides the voltage to energize the fuel pump relay. J2-2 & J1- 9 , go to ground. this first test seems good Last edited by katflap; 09-01-2016 at 10:39 AM.
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