Troubleshooting Techniques for Low Power
Contents
1. Allison Transmission SERVICE TIP DRIVING TRANSMISSION TECHNOLOGY Revisions to this document are noted 1707 Rev C by a stripe in the left hand margin August 2013 Page 1 of 12 SUBJECT Troubleshooting Techniques for Low Power Complaints with Cummins ISB ISL Engine MODELS AFFECTED Allison H 40 50 EP System Introduction The purpose of this bulletin is to provide the Servicing Technician with additional information and troubleshooting techniques in diagnosing engine low power complaints in conjunction with Diagnostic Trouble Codes DTCs in the Main Code 17 amp 65 category Table 1 contains the Diagnostic Trouble Codes most often associated with a low power complaint in the H 40 50 EP System Table 1 Diagnostic Trouble Codes Associated With Engine Performance Failure Record PBSS Display a Speed Profile Stop Engine Lamp 65 12 Engine Controller Stop Check Engine Lamp 65 13 Engine Controller Warning Engine Controller 65 14 Malfunction Indicator Lamp 65 15 Engine Controller Protect Flash Stop Engine Light Engine Controller Idle eo Shutdown Engine Torque e Engine Torque poaa Verification at Neutral 65 25 Engine Failed to Crank 65 26 Engine Performance Flash Stop System Stop System Check System 65 16 Engine Protection Stop System Stop Engine System Shutdown Lamp Disable Propulsion WBD SL5581EN 69323 Copyright 2013 Allison Transmission Inc All Rights Reserved TECHNICAL PUB P O2. Box 894 Indianapolis Indiana 46206 0894 e 317 242 5000 www allisontransmission com 1707 Rev C August 2013 Page 2 of 12 Diagnostic Trouble Code DTC Descriptions DTC 17 22 Engine Speed Profile Mismatch Description This DTC will be logged when a deviation greater than 200 rpm is detected between the Requested Engine Speed and Actual Engine Speed Service Retrieve the engine Fault Code s and refer to the Fault Code troubleshooting tree s in the appropriate Cummins Troubleshooting and Repair manual NOTE The H 40 50 EP System over speed faults codes with a main code of 81 may be logged in conjunction with this code DTC 65 12 Engine Controller Stop Description This DTC is logged when the engine has or will shutdown The engine sends an Engine Controller Stop message to the hybrid system indicating that it has detected a fault associated with the engine and will illuminate the stop engine lamp Typically the engine will shutdown to protect hardware from extreme conditions i e engine overheat or low oil pressure Service The Engine Control Module ECM will have stored a Fault Code associated with this condition Retrieve the engine Fault Code s and refer to the Fault Code troubleshooting tree s in the appropriate Cummins Troubleshooting and Repair manual NOTE The H 40 50 EP System does not shutdown the engine or illuminate any dash lamps during this diagnostic condition DTC 65 13 Engine Controller Wa
3. Chart Playback C Program Files Allison Transmission Allison DO IC For File SystemInterface Diagnostic Action Request Snapshot Options Help Print Screen ALLISON J F1 Help F2 File F3 Diagnostic FS Snapshot F5 Connect F6 ire Trigger Fy Stop Recording Inf fa i a Requested Torque Torque Limit to Engine Actual Engine Torque 00 00 03 00 00 04 00 00 05 00 00 06 00 00 07 00 00 08 00 00 09 00 00 10 00 00 11 00 00 12 Elapsed Time Selected Gear F Current Gear F l PLAYBACK l CAN error frames second 0 00 Total CAN error frames 0 Eee zil sao 890K M8008 2 Q E 22m Walter B Dougherty Inbo w Diagnostic Fault Codes wif Allison DOC TM For PC U Wednesday VH10994 00 01 Figure 2 Allison DOC Strip Chart of Engine Not Meeting Hybrid Torque Request Customer Adjustable Engine Parameter Settings There are many customer adjustable parameters within the electronic control unit of heavy duty engines Several of these impact the operation of the H 40 50 EP System They must be set appropriately for optimal performance of the entire vehicle propulsion system Engine settings for these customer adjustable parameters that affect the H 40 50 EP System operation are provided below by engine model year These lists do not contain all the customer adjustable parameters for the given engine but only those that impact the operation of the H 40 50 EP System The remai
4. S Clutch Pedal Position Switch Cruise Control and Engine Brake Interaction Service Brake Activation Copyright 2013 Allison Transmission Inc All Rights Reserved Diesel Particulate Filter Regeneration Permit Switch l PUB P O Box 894 e Indianapolis Indiana 46206 0894 317 242 5000 www allisontransmission com 1707 Rev C August 2013 Page 11 of 12 Table 4 Cummins ISB CM2150 and ISL CM2150 2007 cont d J1939 Stop Broadcast Allowed Disable if locked Enabled set Maximum Vehicle Speed to 130 or Max Allowed Accelerator Pedal or Lever Position After Treatment Regeneration Permit Switch mesmos vehise SpeedSouce SS SSC dSC C C SCTOCOOOC C C C SCOC dS Magnetic only if wired on the vehicle if not set to DATALINK Vehicle Speed Sensor Type TAILSHAFT SPEED which is the Cummins preferred setting regardless Trap regeneration controller will listen to only one source address The transmission is an acceptable source address If the vehicle controller is the source address then the vehicle controller must listen to the transmission controller CAN message and respond accordingly Road Speed Governor Table 5 Cummins ISB CM850 and ISL CM850 pre 2007 Low Idle Speed 600 rpm Copyright 2013 Allison Transmission Inc All Rights Reserved l PUB P O Box 894 Indianapolis Indiana 46206 0894 317 242 5000 www allisontransmission com 1707 Rev C Aug
5. 40 50 EP System see Customer Adjustable Engine Parameter Settings The Customer Adjustable Engine Parameters can be verified using the Cummins INSITE tool DTC 65 23 Engine Torque Verification Description This DTC is logged when there is a large deviation greater than 500 N m between reported and estimated engine torque while in Forward or Reverse Either the engine is not producing enough torque or the engine is producing too much torque Service There may not be an ECM code associated with this condition Refer to the Engine Performance Troubleshooting Tree in the appropriate Cummins Service Manual DTC 65 24 Engine Torque Verification at Neutral Description This DTC is logged when there is a large deviation greater than 500 N m between reported and estimated engine torque while in Neutral This condition will inhibit Neutral to range shifts Either the engine is not producing enough torque or the engine is producing too much torque Service There may not be an ECM code associated with this condition Refer to the Engine Performance Troubleshooting Tree in the appropriate Cummins Service Manual Copyright 2013 Allison Transmission Inc All Rights Reserved l PUB P O Box 894 e Indianapolis Indiana 46206 0894 317 242 5000 www allisontransmission com 1707 Rev C August 2013 Page 4 of 12 DTC 65 25 Engine Failed to Crank Description This DTC is logged if the engine is unable to increase its speed by 25 r
6. Speed Switched Maximum Vehicle Speed SAE J1939 Multiplexing 700 or 750 rpm must be same as CSS selection Enabled for vehicles with HUSH mode otherwise no preference A 0 0 Seconds Disable refer to 6 6 Set to 130 mph or maximum allowed Set to 130 mph or maximum allowed Copyright 2013 Allison Transmission Inc All Rights Reserved CECHNICAH PUB P O Box 894 Indianapolis Indiana 46206 0894 317 242 5000 www allisontransmission com 1707 Rev C August 2013 Page 8 of 12 Table 2 Cummins ISB and ISL 2013 cont d Accelerator Pedal or Lever Position Aftertreatment Regeneration Permit Switch Auxiliary Shutdown Switch Enable for vehicles that are configured to Use engine cooling fan for auxiliary braking and or have the transmission cooler stacked with the engine cooler Vehicle Fan Configurations 1 amp 2 on the CSS form Source Address 3 Transmission 1 Fan Control Switch Source Address 3 Transmission 1 Transmission Setup Vehicle Acceleration Management VAM Number of Transmission Tailshaft Gear Teeth Magnetic only if wired on the vehicle If not set to Data Link Tailshaft which is Cummins preferred setting Trap regeneration controller will listen to only one source address The transmission is an acceptable source address If the vehicle controller is the source address then the vehicle controller must listen to the transmission controller CAN message and
7. he vehicle while in range until the code becomes active or the low power condition is experienced 4 Press F7 Stop Recording and save the Snapshot for replay and analysis Playback of a Snapshot with Allison DOC 1 Launch Allison DOC for PC Service Tool H 40 50 EP by double clicking the icon on the desktop Copyright 2013 Allison Transmission Inc All Rights Reserved l PUB P O Box 894 Indianapolis Indiana 46206 0894 317 242 5000 www allisontransmission com 1707 Rev C August 2013 Page 5 of 12 2 Select the Snapshot Playback Open Playback File feature on the top toolbar and open the Snapshot previously saved 3 Select the Diagnostic button or press F3 and select Strip Chart The Strip Chart Configuration screen will appear 4 Scroll to the Engine Information category and highlight the parameters desired i e Requested Engine Torque Actual Engine Torque Select the Add button to add the desired parameters to the graph 5 Once parameter selection is complete select the OK button to plot the Strip Chart 6 Monitor Actual Engine performance vs Requested Engine performance Under normal circumstances the Actual Engine Torque will meet the Requested Engine Torque with some initial lag due to turbo spool up Figure 1 provides a representation for a typical Requested Engine Torque vs Actual Engine Torque acceleration scenario 7 When Actual Engine Torque does not meet the Requested Engine T
8. hutdown the engine or illuminate any dash lamps during this diagnostic condition DTC 65 15 Engine Controller Protect Description This DTC is logged when the engine sends an Engine Controller Protect message to the hybrid system indicating that it has detected a fault associated with the engine that may warrant an engine shutdown condition Service The engine ECM will have stored a Fault Code associated with this condition Retrieve the engine Fault Code s and refer to the Fault Code troubleshooting tree s in the appropriate Cummins Troubleshooting and Repair manual NOTE The H 40 50 EP System does not shutdown the engine or illuminate any dash lamps during this diagnostic condition DTC 65 16 Engine Protection System Shutdown Description This DTC is logged when the engine has detected a condition that warrants an engine shutdown i e engine overheat or low engine oil pressure Service The engine ECM will have stored a Fault Code associated with this condition Retrieve the engine Fault Code s and refer to the Fault Code troubleshooting tree s in the appropriate Cummins Troubleshooting and Repair manual DTC 65 17 Engine Controller Idle Shutdown Description Engine controller idle shutdown is an adjustable engine parameter setting The setting is customer programmable and designed to shutdown the engine while in neutral at idle after a specified period of time Service Engine controller idle shutdown must be disabled with the H
9. ing fan for auxiliary braking in the H 40 50 EP System cal otherwise Disable 3 Transmission 1 3 Transmission 1 Copyright 2013 Allison Transmission Inc All Rights Reserved l PUB P O Box 894 Indianapolis Indiana 46206 0894 317 242 5000 www allisontransmission com 1707 Rev C August 2013 Page 10 of 12 Table 3 Cummins ISB and ISL 2010 cont d Switched Maximum Engine Operating Speed Top Gear Transmission Ratio Vehicle Acceleration Management Disable if locked Enabled set Tampering Sensitivity Level Vehicle Speed Sensor Anti Tampering to Low Vehicle Speed Source Magnetic only if wired on the vehicle If not set to DATALINK TAILSHAFT SPEED which is Cummins preferred setting Trap regeneration controller will listen to only one source address The transmission is an acceptable source address If the vehicle controller is the source address then the vehicle controller must listen to the transmission controller H 40 50 EP System message and respond accordingly Vehicle Speed Sensor Type Table 4 Cummins ISB CM2150 and ISL CM2150 2007 Accelerator Options Remote Accelerator Pedal or Lever Enable only if there is a throttle used with a rear start option Adjustable Low Idle Speed Low Idle Speed 600 rpm Low Idle Adjustment Switch Disable After Treatment Enable for vehicles with HUSH mode otherwise no preference Alternator Failure Warning EEEE y S
10. ning parameters are to be assigned by the vehicle OEM or the end user customer must be set exactly as shown in the table below If the engine parameters and values are not set as shown system performance may be affected or system damage could occur Do NOT modify the listed parameters and values for use with other vehicle systems CAUTION For H 50 EP System installations the Customer Adjustable Engine Parameters and Values Copyright 2013 Allison Transmission Inc All Rights Reserved l PUB P O Box 894 Indianapolis Indiana 46206 0894 317 242 5000 www allisontransmission com 1707 Rev C August 2013 Page 7 of 12 Table 2 Cummins ISB and ISL 2013 Accelerator Interlock Adjustable Low Idle Speed Low Idle Speed Low Idle Speed Adjustment Switch Aftertreatment Aftertreatment Diesel Particulate Filter Diesel Particulate Filter Regeneration Permit Switch Alternator Failure Warning Alternator Speedup Clutch Pedal Position Switch Cruise Control Cruise Control and Engine Brake Interaction Engine Brake Control Delay Time Engine Brake Type Minimum Vehicle Speed Clutch Pedal Activation Service Brake Activation Fan Control Fan on With Engine Brake Fast Idle Warm up Gear Down Protection Governor Type Governor Type Governor Type Switch Idle Shutdown J1939 Controls J1939 Stop Broadcast Allowed Powertrain Protection Road Speed Governor Maximum Accelerator Vehicle Speed Maximum Vehicle
11. om above the engine cranking speed of 600 rpm above 32 F transmission sump temperature or 820 rom below 32 F transmission sump temperature after 10 seconds of cranking The maximum engine cranking duration is 30 seconds Service Refer to the Engine Performance Troubleshooting Tree in the appropriate Cummins Service Manual Refer to Allison SIL 2 EP 07 and Troubleshooting Manual TS3715EN DTC 65 26 Engine Performance Description This DTC code is logged when the engine is not producing the requested torque as measured by the H 40 50 EP System The H 40 50 EP System will respond by reducing system performance output torque in proportion to the engine performance reduction There are three conditions that will log this code Condition 1 Engine has a problem that is diagnosable e g High engine temperature low oil pressure and cannot produce the requested engine torque Since this condition is diagnosable the engine still reports the actual engine torque to the hybrid system In most cases the ECM will have logged a Fault Code Retrieve the engine Fault Code s and refer to the Fault Code troubleshooting tree s in the appropriate Cummins Troubleshooting and Repair manual Condition 2 The engine has a problem that is NOT diagnosable by the ECM e g Low fuel pressure sticking damaged exhaust brake valve and cannot produce the torque requested by the hybrid system The ECM may not log a Fault Code under these conditions Refer
12. orque vehicle performance will be degraded and H 40 50 EP output torque will be reduced Figure 2 provides a representation for a typical Requested Engine Torque vs Actual Engine Torque acceleration scenario where the engine is not capable of providing the requested torque Allison DOC TM For PC AED Strip Chart Playback C Program Fil smissio Ele x File SystemInterface Diagnostic Action Request Snapshot Options Help Print fp ELecTRIC DRIVE ALLISON AED PLAYBACK NO ACTIVE CODES F1 Help F2 File F3 Diagnostic A Snapshot F5 Connect F6 Fire Tigger Fr Stop Recording gt In ale a a Requested Torque Torque Limit to Engine ee Actual Engine Torque enn 0 a a eres 00 00 17 00 00 18 00 00 19 00 00 20 00 00 21 00 00 22 00 0023 00 00 24 00 00 25 7 Ai T Elapsed Time Ilo f f a niai Selected Gear F Current Gear F Total File Time 00 03 44 PLAYBACK A j 7 can error frames second Total CAN aor frames Current File Time 00 00 22 asl GORMSTAQLO Helel Hel Ficl eal HyS saps VH10993 00 01 Figure 1 Allison DOC Strip Chart of Engine Meeting Hybrid Torque Request Copyright 2013 Allison Transmission Inc All Rights Reserved l PUB P O Box 894 Indianapolis Indiana 46206 0894 317 242 5000 www allisontransmission com 1707 Rev C August 2013 Page 6 of 12 Allison DOC TM For PC AED Strip
13. respond accordingly Vehicle Speed Sensor Type Table 3 Cummins ISB and ISL 2010 e TM Diesel Particulate Filter Regeneration Permit Switch Enable for vehicles with HUSH mode otherwise no preference Copyright 2013 Allison Transmission Inc All Rights Reserved l PUB P O Box 894 Indianapolis Indiana 46206 0894 317 242 5000 www allisontransmission com 1707 Rev C August 2013 Page 9 of 12 Table 3 Cummins ISB and ISL 2010 cont d Clutch Pedal Position Switch Cruise Control Cruise Control and Engine Brake Interaction Engine Brake Control Delay Time Engine Brake Type Minimum Vehicle Speed Clutch Pedal Activation Service Brake Activation Fan Control Fan on with engine braking Fast Idle Warm up Gear Down Protection Governor Type Governor Type Governor Type Switch Idle Shutdown J1939 Controls J1939 Stop Broadcast Allowed Powertrain Protection PTO Road Speed Governor SAE J1939 Multiplexing Accelerator Pedal or Lever Position Source Address Aftertreatment Regeneration Permit Switch Source Address Auxiliary Shutdown Switch Source Address Fan Control Switch Source Address Idle Validation Switch Source Address Exhaust Brake if Exhaust Brake can not be selected use Undefined Disable refer to 2 9 6 Disable If locked Enabled set Maximum Vehicle Speed to 130 mph or maximum allowed a es Enable only for vehicles that enable Use engine cool
14. rning Description This DTC is logged when the engine sends an Engine Controller Warning message to the hybrid system indicating that it has detected a fault associated with the engine and will illuminate the check engine lamp Service The engine ECM will have stored a Fault Code associated with this condition Retrieve the engine Fault Code s and refer to the Fault Code troubleshooting tree s in the appropriate Cummins Troubleshooting and Repair manual NOTE The H 40 50 EP System does not shutdown the engine or illuminate any dash lamps during this diagnostic condition DTC 65 14 Engine Controller Malfunction Indicator Lamp Description This DTC is logged when the engine sends a message to the hybrid system indicating that it has detected a fault associated with the engine and will illuminate the Malfunction Indicator Lamp MIL Service Typically the MIL is illuminated when a diagnostic condition exists associated with the emission control system of the engine The engine ECM will have stored a Fault Code associated with this condition Retrieve the engine Fault Code s and refer to the Fault Code troubleshooting tree s in the appropriate Cummins Troubleshooting and Repair manual Copyright 2013 Allison Transmission Inc All Rights Reserved l PUB P O Box 894 Indianapolis Indiana 46206 0894 317 242 5000 www allisontransmission com 1707 Rev C August 2013 Page 3 of 12 NOTE The H 40 50 EP System does not s
15. to the Engine Performance Troubleshooting Tree in the appropriate Cummins Service Manual Condition 3 Engine has a problem that is NOT diagnosable e g damaged injectors and cannot produce the engine torque requested by the hybrid system This condition is NOT diagnosable and the engine reports the incorrect engine torque to the hybrid system There will not be an ECM code associated with this condition Refer to the Engine Performance Troubleshooting Tree in the appropriate Cummins Service Manual Condition 3 Note This DTC is different from 65 23 Engine Torque Verification diagnostic The Engine Torque Verification fault logic is insensitive to minor and medium engine torque reduction problems and only detects when there is a major torque reduction increase from the engine greater than 500 N m Allison DOC for PC Service Tool H 40 50 EP Troubleshooting Techniques Allison DOC for PC Service Tool H 40 50 EP can be used to view Requested Engine and Actual Engine Output Torque and Speed Using the Strip Chart function the parameters can be plotted and reviewed to assist in diagnosing vehicle low power complaints Recording a Snapshot with Allison DOC Connect the laptop and necessary communication hardware to the vehicle diagnostic port 1 Launch Allison DOC for PC Service Tool H 40 50 EP by double clicking the icon on the desktop 2 Connect to the vehicle and press F6 Fire Trigger to begin recording 3 Operate t
16. ust 2013 Page 12 of 12 Table 5 Cummins ISB CM850 and ISL CM850 pre 2007 cont d Low Idle Adjustment Switch Battery Voltage Monitor Idle Speedup Cruise Control Engine Brake Control Cruise Control Activation Engine Brake Delay Time Engine Brake Minimum Vehicle Speed Engine Brake Type Service Brake Activation Fast Idle Warm up Gear Down Protection Governor Type was Accelerator Type Accelerator Type Governor Type Switch Idle Shutdown J1939 Controls was Generic Tool Permissions J1939 Stop Broadcast Allowed Powertrain Protection PTO Remote PTO Remote Accelerator Remote Governor Co E C OOOO Enable only if there is a remote throttle used with the rear start option Disable if locked Enabled set Maximum Vehicle Speed to 130 Enable if controller supports J1939 multiplexing mecra Peaosi G mesmssense O COTE a Vehicle Speed Sensor Type Number of Transmission Tailshaft Gear Teeth Magnetic only if wired on the vehicle if not set to DATALINK TAILSHAFT SPEED which is the Cummins preferred setting regardless Copyright 2013 Allison Transmission Inc All Rights Reserved l PUB P O Box 894 Indianapolis Indiana 46206 0894 317 242 5000 www allisontransmission com
Download Pdf Manuals
Related Search