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INPUTS AND OUTPUTS
4.3.10
HIGH EXHAUST SYSTEM TEMPERATURE LAMP (HARDWIRED
AND J1939)
The purpose of this lamp is to let the operator know that the exhaust temperature is at an elevated
condition with low vehicle speed. It can be hardwired or multiplexed.
NOTE:
This function is optional.
Installation
This digital output circuit is designed to sink no more than 250 mA (DC) current.
The HET Lamp is wired to pin 4/7 of the CPC.
Programming Requirements and Flexibility
The options for this digital input listed in Table 4-36.
Parameter
Group
Parameter
Options
Default
Access
35
4 07 DO Selection
0 = Disabled
1 = Accelerator Pedal Kick Down*
2 = Actual Torque*
3 = Road Speed*
4 = Engine Speed*
5 = Coolant Temperature*
6 = Pedal Torque*
7 = Boost Temperature*
8 = Oil Pressure (MCM threshold)*
9 = Coolant Temperature (MCM
threshold)*
10 = Vehicle Power Shutdown /
Ignition Relay*
11 = Optimized Idle ACC Bus
(ignition relay)*
12 = Split Valve 1*
13 = High Exhaust Temp Lamp
13 = High
Exhaust Temp
Lamp
VEPS, DRS
35
4 07 Fault
Detection
0 = Disabled
1 = Enabled
0 = Disabled
VEPS, DRS
46
Hi Exhaust Temp
Lamp Con
fi
g
0 = Hardwired
1 = 1939 PTC1
0 = Hardwired
VEPS, DRS
* Not Available in NAFTA
Table 4-36
High Exhaust System Temperature Lamp Options
4-38
All information subject to change without notice.
(Rev. 01/07)
7SA827 0701
Copyright © 2007 DETROIT DIESEL CORPORATION