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Tranman324 · 08-17-2010, 09:26 PM

Alright, here's what I've got today....

First off, I checked the wiring on my plugs (The brown and Big grey plugs) that connect the engine harness to the body harness
- I found on the brown plug I got the Black/purple stripe and Black/Yellow stripe wires flipped when I re-pinned the plug.

- If I am correct, The black/purple stripe is the fuel pump relay and the Black/yellow stripe is the IACV.

- I plugged everything back up hoping it'll work, but the fuel pump relay didn't click over. Although, my Idle was fixed.

Here's the relay I'm using:

I have 5 spares of these, I've tried them all. All with no luck

Here is where the relay goes for reference purposes:

Labeled 1,2,3, and 5 like how its labeled on the relay.

This is what I know(think) about the relay:
Pin 1: goes to Pin 104 on the ECU
Pin 2: goes to the fuel pump
Pin 3: Maybe ground?
Pin 5: Power

Now, continuing my diagnosis of the problem I started with checking pin 104 on the ECU (black/purple stripe).
- with my multimeter, Positive probe on the wire and negative wire on a local ground on the chassis
- With the relay OUT and the ignition ON, I got NO VOLTAGE
- With the relay IN and the ignition ON, I got 11.54V. The voltage was constant and did not change, I waited for about a minute to see if it changed.

Next, I checked continuity from Pin 104 to the relay, positive probe on pin 104 and the negative on a Pin in the relay (pin 1,2,3 or 5)
- from Pin 104 on the ECU to Pin 1 on the relay: POSITIVE for conitnuity
- from pin 104 to pin 2, 3, or 5: NO CONTINUITY

I also checked the continuity from Pin 2 on the relay to the Fuel pump: POSITIVE for continuity

The voltage from Pin 2 and 5 is 11.57 V, which makes sense since those are the 2 pins I'm jumping to get the pump to run

When I ground Pin 3, I get 11.56 V

And.... now I'm lost. what now?

08-17-2010, 09:26 PM	#5
Tranman324 Zilvia Junkie Join Date: Jul 2006 Location: Marietta, GA Posts: 355 Trader Rating: (11)	Alright, here's what I've got today.... First off, I checked the wiring on my plugs (The brown and Big grey plugs) that connect the engine harness to the body harness - I found on the brown plug I got the Black/purple stripe and Black/Yellow stripe wires flipped when I re-pinned the plug. - If I am correct, The black/purple stripe is the fuel pump relay and the Black/yellow stripe is the IACV. - I plugged everything back up hoping it'll work, but the fuel pump relay didn't click over. Although, my Idle was fixed. Here's the relay I'm using: I have 5 spares of these, I've tried them all. All with no luck Here is where the relay goes for reference purposes: Labeled 1,2,3, and 5 like how its labeled on the relay. This is what I know(think) about the relay: Pin 1: goes to Pin 104 on the ECU Pin 2: goes to the fuel pump Pin 3: Maybe ground? Pin 5: Power Now, continuing my diagnosis of the problem I started with checking pin 104 on the ECU (black/purple stripe). - with my multimeter, Positive probe on the wire and negative wire on a local ground on the chassis - With the relay OUT and the ignition ON, I got NO VOLTAGE - With the relay IN and the ignition ON, I got 11.54V. The voltage was constant and did not change, I waited for about a minute to see if it changed. Next, I checked continuity from Pin 104 to the relay, positive probe on pin 104 and the negative on a Pin in the relay (pin 1,2,3 or 5) - from Pin 104 on the ECU to Pin 1 on the relay: POSITIVE for conitnuity - from pin 104 to pin 2, 3, or 5: NO CONTINUITY I also checked the continuity from Pin 2 on the relay to the Fuel pump: POSITIVE for continuity The voltage from Pin 2 and 5 is 11.57 V, which makes sense since those are the 2 pins I'm jumping to get the pump to run When I ground Pin 3, I get 11.56 V And.... now I'm lost. what now?