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Nissan and Datsun PL720 2WD L4-1952cc 2.0L SOHC (Z20) (1985)01 · Relays and Modules
01 · Diagnostics

ECM - Green or Blue Relay Caution

Make
Nissan and Datsun
Model
PL720 2WD
Engine
L4-1952cc 2.0L SOHC (Z20)
Year
1985
Section
Electronic Carburetor Control (ECC) Unit <--> [Engine Control Module] › Technical Service Bulletins › ECM - Green or Blue Relay Caution
Relays and ModulesECM - Green or Blue Relay Caution · page 1 of 2
ECM - Green or Blue Relay Caution – Nissan PL720 2WD L4-1952cc 2.0L SOHC (Z20) (1985)

Electronic Carburetor Control (ECC) Unit: Technical Service Bulletins
ECM - Green or Blue Relay Caution

Classification: EC95-014

Reference: NTB95-070

Date: July 5, 1995

GREEN OR BLUE (FUEL PUMP & A/C) RELAY CAUTION

SERVICE INFORMATION

When servicing a customer's vehicle, exercise caution when diagnosing / checking the harness at any green or blue colored relay (Fuel pump & A/C)
connector.

SERVICE PROCEDURE

When diagnosing the harness at any green or blue colored relay (Fuel pump & A/C) connector, observe the following pre-cautions to prevent damage to
the Engine Control Module (ECM):

1.

Note that the schematic on the relay is different than the orientation of the relay terminals in the harness connectors (see diagram):

2.

Exercise caution to ensure that the correct terminals are being probed at the relay connector during diagnosing / checking.

NOTE: 

Use a circuit tester first to verify the terminals that are supplied with battery voltage. If battery voltage is connected to terminal 2, the ECM will be
damaged if the circuit being tested has terminal 2 connected to the ECM.

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The same page in: PL720 2WD L4-1952cc 2.0L SOHC (Z20) (1985), PL720 2WD L4-1952cc 2.0L SOHC (Z20) (1985), PL720 2WD L4-1952cc 2.0L SOHC (Z20) (1985), PL720 2WD L4-2187cc 2.2L SOHC (Z22) (1982), PL720 2WD L4-2187cc 2.2L SOHC (Z22) (1982), PL720 2WD L4-2187cc 2.2L SOHC (Z22) (1982), PL720 2WD L4-2187cc 2.2L SOHC (Z22) (1982), PL720 2WD L4-2389cc 2.4L SOHC (Z24) (1983), PL720 2WD L4-2389cc 2.4L SOHC (Z24) (1983), PL720 2WD L4-2389cc 2.4L SOHC (Z24) (1983), PL720 2WD L4-2389cc 2.4L SOHC (Z24) (1983), PL720 4WD L4-2389cc 2.4L SOHC (Z24) (1983).

Parts & tools for this job For 1985 Nissan PL720 2.0L

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