Zenith NA665, Operator'S Manual, Page: 13 / 64

10 Rev-13 Nov 23, 2020
48 AND 70 PIN ECM’s
During the 2017-2018 model years, ZPP’s NA665,
NA690, and TA690 will transition from a 48-pin ECM to a
70-pin ECM. It is important to know which ECM you have
on your engine, as the ECM determines the control
system voltage, the type of pre-cat oxygen sensor, and
knock sensing. The ECM’s, voltages, and pre-cat oxygen
sensors are not interchangeable or upgradeable. Using
the wrong ECM, voltage, or pre-cat oxygen sensor may
damage your engine’s control system. See Figure 1
Please see Common Parts ( Figure 2 ) for associated
service part numbers.
48-pin ECM
: 201407
70-pin ECM
: 201408
Starting &
Charging
Voltage
24 VDC 24 VDC
Control
System
Voltage
12 VDC 24 VDC
Knock
sensors for
TA690 &
TA6120?
No Yes
Figure 1