Main Relay (Computer/Fuel System): Testing and Inspection

3MZ-FE ENGINE CONTROL SYSTEM: INTEGRATION RELAY: INSPECTION

1. INSPECT ENGINE ROOM JUNCTION BLOCK ASSEMBLY





(a) Inspect the EFI No. 1 fuse.

(1) Remove the EFI No. 1 fuse.

(2) Using an ohmmeter, measure the resistance of the fuse.

Standard resistance:





(b) Inspect the A/F fuse.

(1) Remove the A/F fuse.

(2) Using an ohmmeter, measure the resistance of the fuse.

Standard resistance:





(c) Inspect the C/OPN relay.

(1) Measure the resistance according to the value(s) in the table below.





Standard resistance:





NOTICE:
While using the battery for the inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.

(d) Inspect the A/F relay.

(1) Measure the resistance according to the value(s) in the table below.





Standard resistance:





NOTICE:
While using the battery for the inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.