Quest Minivan SE V6-3.3L (VG33E) (1999)
Engine Control Module: Technical Service Bulletins
ECM - Relay (Type 1M) Green or Blue Precautions
Classification:
EC93-016
Reference:
NTB93-176
Date:
November 29, 1993
GREEN OR BLUE (TYPE 1M) RELAY CAUTION
APPLIED VEHICLE(S):
All Models
SERVICE INFORMATION
When servicing a customer's vehicle, exercise caution when diagnosing / checking at any green or blue colored relay (type 1M, 1 make-normally open
relay).
SERVICE PROCEDURE
When diagnosing at any green or blue colored relay (type 1M, 1 make-normally open relay), observe the following cautions to prevent damage to the
Engine Control Module (ECM):
1.
Note that the schematic on the fuel pump relay is rotated 90 degrees from the orientation of the relay terminals in the relay connector (see
diagram):
2.
Exercise caution to ensure that the correct terminals are being probed at the relay connector during diagnosing / checking.
Note:
If terminals 2 or 3 (battery voltage) are connected to terminal 1, the ECM will become damaged if the circuit being tested has terminal 1 connected to
the ECM.