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Home >> Nissan-Datsun >> 1973 >> 610 Not Available Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Exhaust Emission Systems >> Testing >> Transmission (Fourth Gear) Switch

Transmission (Fourth Gear) Switch

Disconnect lead wires at switch and connect ohmmeter. Ohmmeter should read infinity when shift lever is in fourth gear position and zero when in all other gear positions, including neutral.

  Throttle SW. Spark timing
"Advance" "Retard"
Engine start ON - ◦
Idling ON - ◦
Partial throttle opening ON - ◦
Wide throttle opening (and high speed crousing) OFF ◦  

3SM208 

SPARK CONTROL SYSTEM OPERATION (AUTOMATIC TRANS.)