Installation Manual

Electrical & Electronic Application And Installation Manual
Production Release Version 1.0
Page 202
The Air intake restriction switch is a 2 wire switch which requires connection to
the switched battery + and pin 64 of the ECM J1 connector as shown in figure
15.2.
Figure 15.2 Air Intake Restriction Switch Installation wiring
15.2 Coolant Level Switch
15.2.1 Coolant Level Switch Operation
The coolant level switch enables the ECM to monitor the coolant level within
the radiator or expansion tank to protect the engine against operation with low
or no coolant. The switch is to be mounted so that it is immersed during all
normal operating conditions. If the switch is not fully immersed then the ECM
will take action as configured within the engine monitoring system. The
engine must have been running for 60 seconds before a fault condition can be
triggered. The coolant level switch is a normally closed switch, however the
polarity of the ECM connection can be modified within the service tool to
normally open in the event of the customer fitting a third party switch.
The coolant level switch supports the activation of the severity levels shown in
table 15.5. Table 15.5 also shows the possible engine reactions to these
severity levels if configured within the engine software using the service tool,
i.e. derate and shutdown options.
Service Tool
Description
J1939
description
Status
SPN
(J1939)
FMI
(J1939)
Event
Code
Engine Action (If
enabled)
Coolant Level Engine
Coolant Level
Severity L1 111 17 E2143-1 Warning Lamp Only
Severity L2 111 18 E2143-2 Engine % derate
Severity L3 111 01 E2143-3 Engine Shutdown
Table 15.5 Coolant Level Switch Monitoring
15.2.2 Coolant Level Switch Configuration
To enable the operation of this switch the configuration of the coolant level
switch must be altered within the service tool from ‘Not Installed’ to ‘Installed’.
Once installed the time delay to ‘take action’ can also be set using the service
tool. The configurable range and the default set points are shown in table
15.6. The coolant level switch supplied by Perkins is a normally closed switch
configuration. Customers supplying their own switch must use a switch with
normally closed contacts for the software feature to operate correctly.
Note: The time delay for Severity L1, L2 and L3 are triggered simultaneously.
If a delay between these levels is required then the associated activation
times must be increased. For example if the Severity L1 delay is 10sec, L2
delay 20sec and the L3 delay 30sec and engine derates and shutdowns are
enabled, an L2 event and the associated derate % will occur 10 seconds after
the L1 event and the L3 event and associated shutdown will occur 10 seconds
after the L2 event. As a default the delay time for all functions is 10sec.