High Exhaust System Temperature Lamp; High Exhaust System Temperature Lamp Requirements And Guidelines; Programming Requirements And Flexibility - Detroit Diesel DDEC VI Application And Installation

3.7.4

HIGH EXHAUST SYSTEM TEMPERATURE LAMP

The HEST Lamp is controlled by DDEC VI.
The HEST Lamp remains ON:
□ For approximately five (5) seconds at the start of every ignition cycle
□ When the vehicle speed is less than 5 mph and the DPF outlet

High Exhaust System Temperature Lamp Requirements and Guidelines

The following requirements and guidelines apply to the HEST Lamp:
□ The HEST Lamp is optional and must be supplied by the OEM.
□ A 12 volt light of less than 2.0 A (DC) is required depending on the ignition source. Digital
output circuits are designed to sink no more than 2.0 A (DC) current.
□ The HEST Lamp must be integrated into the instrument panel or placed in clear view of
the vehicle operator.
□ The lens color must be amber.
□ This output is wired to pin 4/7 of the CPC.
□ This lamp can be multiplexed on J1939.

Programming Requirements and Flexibility

The parameters for the High Exhaust System Temperature Lamp are listed in Table 3-111..
All information subject to change without notice. (Rev. 01/07)
7SA827 0701 Copyright © 2007 DETROIT DIESEL CORPORATION
DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
(a bulb check).
temperature is greater than 525°C.
3-111