Diesel Exhaust Fluid Quality Sensor Updates on C9.3 - C18 Tier 4 Final Engines {108U, 1920} Caterpillar

Articulated Truck

725C (S/N: TFB1-UP)

725C2 (S/N: 2T31-UP)

730C (S/N: TFF1-UP)

730C EJECTOR (S/N: TFH1-UP)

730C2 (S/N: 2T41-UP)

730C2 EJ (S/N: 2T51-UP)

735C (S/N: TFJ1-UP)

740C EJECTOR (S/N: TFN1-UP)

745 (S/N: 3T61-UP)

745C (S/N: TFK1-UP)

Cold Planer

PM620 (S/N: JB91-UP)

PM622 (S/N: JFC1-UP)

Engine

C13 (S/N: NF31-UP; N3F1-UP)

C15 (S/N: N5F1-UP)

C18 (S/N: N8F1-UP)

Excavator

336F (S/N: B391-UP; TZA1-UP; RKB1-UP; RBC1-UP; YFD1-UP; DKF1-UP; YBH1-UP; NAJ1-UP; ZBJ1-UP; LCL1-UP; NBL1-UP; PFL1-UP; SSN1-UP; LTP1-UP; KCS1-UP; NBS1-UP; KFT1-UP; DSW1-UP; MTW1-UP; DFY1-UP; LJY1-UP; WTZ1-UP)

340F (S/N: RBD1-UP; YBF1-UP; EAR1-UP; WBX1-UP)

349F (S/N: BZ21-UP; KEA1-UP; HLB1-UP; HPD1-UP; SFG1-UP; RAX1-UP)

352F (S/N: SD21-UP; WNA1-UP; NDC1-UP; YEG1-UP; A9J1-UP; XAL1-UP; KBP1-UP; MDR1-UP)

374F (S/N: AT21-UP; EBF1-UP; DNM1-UP)

390F (S/N: MGF1-UP; FEH1-UP)

Industrial Engine

C13 IND (S/N: JR91-UP)

C9.3 (S/N: CS91-UP)

Landfill Compactor

826K (S/N: 2321-UP)

836K (S/N: TWZ1-UP)

Material Handler

MH3295 (S/N: PA91-UP)

Mobile Hydraulic Power Unit

336FMHPU (S/N: B341-UP; B351-UP)

374F MHPU (S/N: DP41-UP)

390F MHPU (S/N: B371-UP)

Motor Grader

12M Series 3 (S/N: N9B1-UP; N9F1-UP; N9P1-UP; N9R1-UP)

140M Series 3 (S/N: N9D1-UP; N9G1-UP; N9J1-UP; N9M1-UP)

14M Series 3 (S/N: N9S1-UP)

160M Series 3 (S/N: N9E1-UP; N9K1-UP; N9L1-UP; N9T1-UP)

16M Series 3 (S/N: N9Y1-UP)

18M Series 3 (S/N: N9A1-UP)

OEM Excavator Based Specialty Solution

390F OEM (S/N: PT71-UP)

Off-Highway Truck/Tractor

770G (S/N: RMA1-UP; KDH1-UP)

772G (S/N: RME1-UP; KEX1-UP)

Pipelayer

PL72 (S/N: P721-UP)

PL83 (S/N: CB21-UP)

PL87 (S/N: TEC1-UP)

Reclaimer Mixer

RM500B (S/N: MB91-UP)

Soil Compactor

825K (S/N: 2331-UP)

Track-Type Loader

973 (S/N: MKL1-UP)

Track-Type Tractor

D6T (S/N: CR31-UP; 2B31-UP; MH71-UP; CG81-UP; SGA1-UP; RAD1-UP; STE1-UP; JML1-UP; MEL1-UP; JNM1-UP; WRN1-UP; K1R1-UP; KMR1-UP; WES1-UP; HYT1-UP; SGT1-UP; NDY1-UP; TMY1-UP; HTZ1-UP)

D7E (S/N: HKA1-UP; SSH1-UP)

D8T (S/N: FMC1-UP)

D9T (S/N: REX1-UP)

Wheel Dozer

824K (S/N: 2341-UP)

834K (S/N: TWY1-UP)

Wheel Loader

966M (S/N: EJA1-UP; DYC1-UP; LMM1-UP; KJP1-UP)

966M Series XE (S/N: P6C1-UP; B8P1-UP)

972M (S/N: LSJ1-UP; GGN1-UP; A8P1-UP; JPR1-UP)

972M Series XE (S/N: M5S1-UP; EDW1-UP)

980M (S/N: MK21-UP; KRS1-UP; N8T1-UP)

982M (S/N: F9A1-UP; K1Y1-UP)

986K (S/N: MH81-UP)

988K (S/N: TWX1-UP)

Wheel Tractor-Scraper

621K (S/N: WTA1-UP; WTE1-UP)

623K (S/N: WTB1-UP)

627K (S/N: WTC1-UP)

631K (S/N: WTR1-UP)

637K (S/N: WTS1-UP; WTT1-UP)

Introduction

The EPA has mandated that a DEF quality sensor must be installed on all engines built after 2016. This new DEF quality sensor is integrated into the DEF header inside the DEF tank. The new style DEF header utilizes CAN C communication, so the wiring to the DEF header has been slightly modified on product going forward. However, the DCU remains compatible to both setups with the latest 507-7605 Engine Software. As part of the DEF quality sensor implementation, a new configuration parameter setting is used on the engine ECM in Cat ET to identify whether a DEF quality sensor is "installed" or "not installed". Below are some different fault codes for incompatible hardware and configuration setting as well as different service scenarios that may be encountered with this change and how to resolve any issues in these particular service scenarios. In addition to this Special Instruction, there is a video detailing these changes posted on Cat Channel 1.

Fault Codes When Parts/Settings Are Not Compatible

DEF quality header not installed but configuration set to installed.

DEF quality header installed but configuration set to not installed.

DEF Quality Sensor Service Scenarios

Replacement Industrial Engine (2016& earlier builds)

• Replace with new engine (old engine no longer serviceable). Will be required to update to DEF quality sensor by installing new DEF header, wiring harness, and DCU software as well as changing DEF quality sensor configuration status to installed in Cat ET.

Replacement Machine Engine (2016& Earlier Builds)

• Replace with older service replacement Engine Arrangement Complete (EAC) engine (no other changes needed, confirm that DEF quality sensor configuration is set to not installed in CAT ET).

• If dealer orders new EAC, will be required to update to DEF quality sensor (below scenario).

Replacement Engine (2017& Future Builds)

• Replace with latest EAC engine.

Install DEF Quality Sensor on 2016or Earlier Builds

• Requires DCU software update, PETU wiring harness update, DEF quality sensor configuration status changed to installed.

Replace DCU

• No effect, new DCU hardware, and software is compatible to both DEF headers.

Replace Engine ECM

• No effect when using ECM replacement file.

• If engine ECM is replaced without ECM replacement file, the DEF quality sensor configuration setting will default to not installed and may need to be updated if machine utilizes DEF quality sensor (requires FPS to change).

Replace Aftertreatment ECM

• No difference from current. DEF quality sensor configuration setting is stored in engine ECM.

Replace Wiring Harness

• No effect, both new and old harness part numbers are available, just order same part number that is removed.