Nissan and Datsun Workshop Service and Repair Manuals > PL720 2WD L4-1952cc 2.0L SOHC (Z20) (1985) > Powertrain Management | Computers and Control Systems | Electronic Carburetor Control (ECC) Unit <--> [Engine Control Module] | Component Information | Description and Operation

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Electronic Carburetor Control (ECC) Unit: Testing and Inspection

Fig. 21 Control unit ground circuit test

Perform control unit ground circuit test as illustrated in Fig. 21. if resistance is not as specified, check harness and repair as necessary.

Nissan and Datsun Workshop Service and Repair Manuals