Service manual

Electrical_EFI Service Manual.fm

P1 and P2 Connectors

MC1000 ECUs have two main harness connector

sockets.

Remove both main harness connectors from the

ECU when performing pin point tests described in

this manual.

Also, if required, be sure to disconnect any other

devices; see the specific pin point tests.

• Connector P1 color is black. It connects to the

black ECU socket.

• Connector P2 color is grey. It connects to the

grey ECU socket.

CAUTION:

Allow connector rotating latch to draw the

connector into the ECU socket (coupler). Do not

press or force the connector; it should slide

into the socket easily.

Check for contamination and pin condition

before reconnecting.

Lubricate the connector seals with a high-

quality dielectric grease before reinstalling.

Use a commercially available pin gauge when

performing pin point tests. Ordinary tester

probes can spread pins resulting in loose

connections.

Pin identification (P1 or P2)

Use the following illustration for P1 and P2 pin iden-

tification.

Disconnecting the ECU

1. Disconnect the battery.

2. Press in the latch locking tab and rotate the latch

in direction (a) until it stops. Pull the connector

from the ECU socket.

Reconnecting the ECU

1. Make sure the battery is disconnected.

2. Make sure the main fuse is removed.

This photo shows how to identify individual pins in the ECU

harness connectors. Each row is identified by a number 1-4.

Each column is identified by a letter A - H.

1. Latch

2. Locking tab