1975 Datsun 280z FSM - Spooled up Racing

Emission Control System
2. If voltmeter reading is not as 3. Turn ignition switch to the IG tive) and (§) (negative) of function
specified, check catalyzer warning position, and short-circuit function test connector. If voltmeter reading is
lamp and the circuit indicated by large
solid lines. If necessary, repair or
test connector terminals between (8)
and @ with a jumper wire. Connect
zero, the circuit indicated by large
solid lines in Figure EC-41 is OK.
replace faulty parts.
voltmeter between terminals (?) (posi-
n
B|
/ ~\ . .... .... v
B
B
— -
r
SWITCHING
MODULE
CATALYZER
HOLD RELAY
CATALYZER
TEMPERATURE
SENSOR
FUSE BOX
TO STARTER SWITCH
EC-22
EC390
Fig. EC-41 Wiring diagram 2