1975 Datsun 280z FSM - Spooled up Racing

4. If voltmeter reading is not as
specified, check hold relay unit and
wiring indicated by large solid lines. If
the above unsatisfactory condition still
exists, replace switching module.
fe
3|
n
Emission Control System
5. Check continuity between switching
module terminal (T) and catalyzer
temperature sensor terminal @, and
between switching module terminal
(2) and catalyzer temperature sensor
B
terminal @. If continuity exists between
two sets of terminals, the circuit
indicated by large solid lines in Figure
EC-42 is OK.
B
f
GY
GY
GY
SWITCHING
MODULE
Y XJB
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©
GY
Di
® ©
© © w
®
W
FUNCTION
TEST CONNECTOR
6
CATALYZER
WARNING
LAMP
GY
B
@0ff\
@®
CATALYZER
HOLD RELAY
£Q
CATALYZER
TEMPERATURE
SENSOR
TO IGNITION SWITCH
O
O
O O
J^IOA IG
O
o
o—o
o—o
-o
o-
o
-o
-o
-o o -o
o -o o—o
o