BENDIX BW2786 User Manual

Troubleshooting Bendix

ESP

Stability System

ESP

Stability System

DIAGNOSTIC MODES

In order to communicate with the ECU, the controller has several modes that the tec hnician can select, allowing information to be retrieved, or other ECU functions to be accessed.

To enter the various diagnostic modes:

No. of Times

to Press the

Blink Code

Switch

System Mode Entered

1 Active diagnostic trouble code retrieval

2 Inactive diagnostic trouble code retrieval

3 Clear active diagnostic trouble codes

4 System conﬁ guration check

5 Dynamometer Test Mode

7* Reconﬁ gure ECU (See SD sheet for details.)

* To enter the Reconﬁ guration Mode, the switch must be held in before the application of ignition power. Once the power is supplied, the switch is released and then pressed seven times.

Bendix Blink Code to Description

and Other Electronic Messaging Standards

(J1587 SID, J1939 SPN & FMI)

Bendix Blink Code 1st digit 2nd digit

1 1 No DTCs N/A N/A 21

3 1 SA Right WSS Excessive Air Gap 2 790 1 4 1 DA Left WSS Excessive Air Gap 3 791 1

5 1 DA Right WSS Excessive Air Gap 4 792 1 14 1 AA Left WSS Excessive Air Gap 5 793 1 15 1 AA Right WSS Excessive Air Gap 6 794 1

2 2 SA Left WSS Output Low @ Drive-Off 1 789 14

3 2 SA Right WSS Output Low @ Drive-Off 2 790 14

4 2 DA Left WSS Output Low @ Drive-Off 3 791 14

5 2 DA Right WSS Output Low @ Drive-Off 4 792 14 14 2 AA Left WSS Output Low @ Drive-Off 5 793 14 15 2 AA Right WSS Output Low @ Drive-Off 6 794 14

2 3 SA Left WSS Open or Shorted 1 789 2

3 3 SA Right WSS Open or Shorted 2 790 2

4 3 DA Left WSS Open or Shorted 3 791 2

5 3 DA Right WSS Open or Shorted 4 792 2 14 3 AA Left WSS Open or Shorted 5 793 2 15 3 AA Right WSS Open or Shorted 6 794 2

2 4 SA Left WSS Loss of Sensor Signal 1 789 10

3 4 SA Right WSS Loss of Sensor Signal 2 790 10

4 4 DA Left WSS Loss of Sensor Signal 3 791 10

5 4 DA Right WSS Loss of Sensor Signal 4 792 10 14 4 AA Left WSS Loss of Sensor Signal 5 793 10 15 4 AA Right WSS Loss of Sensor Signal 6 794 10

2 5 SA Left WSS Wheel End 1 789 7

3 5 SA Right WSS Wheel End 2 790 7

4 5 DA Left WSS Wheel End 3 791 7

5 5 DA Right WSS Wheel End 4 792 7 14 5 AA Left WSS Wheel End 5 793 7 15 5 AA Right WSS Wheel End 6 794 7

2 6 SA Left WSS Erratic Sensor Signal 1 789 8

3 6 SA Right WSS Erratic Sensor Signal 2 790 8

4 6 DA Left WSS Erratic Sensor Signal 3 791 8

5 6 DA Right WSS Erratic Sensor Signal 4 792 8 14 6 AA Left WSS Erratic Sensor Signal 5 793 8 15 6 AA Right WSS Erratic Sensor Signal 6 794 8

2 7 SA Left WSS Tire Size Calibration 1 789 13

3 7 SA Right WSS Tire Size Calibration 2 790 13

4 7 DA Left WSS Tire Size Calibration 3 791 13

5 7 DA Right WSS Tire Size Calibration 4 792 13 14 7 AA Left WSS Tire Size Calibration 5 793 13 15 7 AA Right WSS Tire Size Calibration 6 794 13

2 8 SA Left Poor Brake Performance 82 3534 7

3 8 SA Right Poor Brake Performance 83 3535 7

4 8 DA Left Poor Brake Performance 84 3536 7

5 8 DA Right Poor Brake Performance 85 3537 7 14 8 AA Left Poor Brake Performance 86 3538 7 15 8 AA Right Poor Brake Performance 87 3539 7 14 10 AA Left WSS Conﬁ guration Error 5 793 13 15 10 AA Right WSS Conﬁ guration Error 6 794 13

6 1 Battery Voltage Too Low 251 627 4

6 2 Battery Voltage Too High 251 627 3

6 3 Battery Voltage Too Low During ABS 251 627 4

6 4 Battery Voltage Input Open Circuit 251 627 5

6 5 Ignition Voltage Too Low 251 627 4

6 6 Ignition Voltage Too High 251 627 3

6 7 Ignition Voltage Too Low During ABS 251 627 4

6 8 Input Voltage Excessive Noise (Temp.) 251 627 2

6 9 Input Voltage Excessive Noise (Latched) 251 627 14

7 1 SA Left PMV REL Solenoid Shorted to Ground 48 795 4

8 1 SA Right PMV REL Solenoid Shorted to Ground 49 796 4

9 1 DA Left PMV REL Solenoid Shorted to Ground 50 797 4 10 1 DA Right PMV REL Solenoid Shorted to Ground 51 798 4 16 1 AA Left PMV REL Solenoid Shorted to Ground 52 799 4 17 1 AA Right PMV REL Solenoid Shorted to Ground 53 800 4 20 1 Trailer PMV REL Solenoid Shorted to Ground 66 1056 4

7 2 SA Left PMV REL Solenoid Shorted to Voltage 48 795 3

8 2 SA Right PMV REL Solenoid Shorted to Voltage 49 796 3

9 2 DA Left PMV REL Solenoid Shorted to Voltage 50 797 3

DTC Description

Wheel Speed Sensor DTCs

SA Left WSS Excessive Air Gap

Power Supply DTCs

Pressure Modulator Valve DTCs

J1587

J1939

SID

SPN

1 789 1

FMI

Active Diagnostic Trouble Code Mode

For troubleshooting, typically the Active and Inactive Diagnostic Trouble Retrieval Modes are used. The technician presses the blink code switch once and the ABS indicator lamp ﬂ ashes a ﬁ rst group of two codes, and if there are more trouble codes recorded, this is followed by a second set of codes, etc. (See this page for a brief directory of these codes.)

Clearing Diagnostic Trouble Codes

To clear active diagnostic trouble codes (as problems are ﬁ xed), simply clear (or “self-heal”) by removing and re-applying ignition power. The only exception is for wheel speed sensor trouble codes, which clear when power is removed, re-applied, and the ECU detects valid wheel speed from all wheel speed sensors. Alternately, codes may be cleared by pressing the diagnostic blink code switch 3 times (to enter the Clear Active Diagnostic Trouble Code Mode) or by using a hand-held or PC-based diagnostic tool. Hand-held or PC-based diagnostic tools are able to clear wheel speed sensor trouble codes without the vehicle being driven.

EXAMPLE OF BLINK CODE MESSAGE

Bendix Blink Code 1st digit 2nd digit

10 2 DA Right PMV REL Solenoid Shorted to Voltage 51 798 3 16 2 AA Left PMV REL Solenoid Shorted to Voltage 52 799 3 17 2 AA Right PMV REL Solenoid Shorted to Voltage 53 800 3 20 2 Trailer PMV REL Solenoid Shorted to Voltage 66 1056 3

7 3 SA Left PMV REL Solenoid Open Circuit 48 795 5 8 3 SA Right PMV REL Solenoid Open Circuit 49 796 5

9 3 DA Left PMV REL Solenoid Open Circuit 50 797 5 10 3 DA Right PMV REL Solenoid Open Circuit 51 798 5 16 3 AA Left PMV REL Solenoid Open Circuit 52 799 5 17 3 AA Right PMV REL Solenoid Open Circuit 53 800 5 20 3 Trailer PMV REL Solenoid Open Circuit 66 1056 5

7 4 SA Left PMV HLD Solenoid Shorted to Ground 42 795 4

8 4 SA Right PMV HLD Solenoid Shorted to Ground 43 796 4

9 4 DA Left PMV HLD Solenoid Shorted to Ground 44 797 4 10 4 DA Right PMV HLD Solenoid Shorted to Ground 45 798 4 16 4 AA Left PMV HLD Solenoid Shorted to Ground 46 799 4 17 4 AA Right PMV HLD Solenoid Shorted to Ground 47 800 4 20 4 Trailer PMV HLD Solenoid Shorted to Ground 66 1056 4

7 5 SA Left PMV HLD Solenoid Shorted to Voltage 42 795 3

8 5 SA Right PMV HLD Solenoid Shorted to Voltage 43 796 3

9 5 DA Left PMV HLD Solenoid Shorted to Voltage 44 797 3 10 5 DA Right PMV HLD Solenoid Shorted to Voltage 45 798 3 16 5 AA Left PMV HLD Solenoid Shorted to Voltage 46 799 3 17 5 AA Right PMV HLD Solenoid Shorted to Voltage 47 800 3 20 5 Trailer PMV HLD Solenoid Shorted to Voltage 66 1056 3

7 6 SA Left PMV HLD Solenoid Open Circuit 42 795 5

8 6 SA Right PMV HLD Solenoid Open Circuit 43 796 5

9 6 DA Left PMV HLD Solenoid Open Circuit 44 797 5 10 6 DA Right PMV HLD Solenoid Open Circuit 45 798 5 16 6 AA Left PMV HLD Solenoid Open Circuit 46 799 5 17 6 AA Right PMV HLD Solenoid Open Circuit 47 800 5 20 6 Trailer PMV HLD Solenoid Open Circuit 66 1056 5

7 7 SA Left PMV CMN Open Circuit 7 795 5

8 7 SA Right PMV CMN Open Circuit 8 796 5

9 7 DA Left PMV CMN Open Circuit 9 797 5 10 7 DA Right PMV CMN Open Circuit 10 798 5 16 7 AA Left PMV CMN Open Circuit 11 799 5 17 7 AA Right PMV CMN Open Circuit 12 800 5 20 7 Trailer PMV CMN Open Circuit 66 1056 5

7 8 SA Left PMV Conﬁ guration Error 7 795 13

8 8 SA Right PMV Conﬁ guration Error 8 796 13

9 8 DA Left PMV Conﬁ guration Error 9 797 13 10 8 DA Right PMV Conﬁ guration Error 10 798 13 16 8 AA Left PMV Conﬁ guration Error 11 799 13 17 8 AA Right PMV Conﬁ guration Error 12 800 13 20 8 Trailer PMV Chuff Test/Conﬁ guration Error 66 1056 7

11 1 J1939 Serial Link 231 639 12 11 2 J1939 Retarder 231 639 14 11 3 J1939 Engine Communications 231 639 2 11 4 J1939 Invalid Data (Engine/Retarder) 231 639 2 11 5 J1939 Supply Pressure 231 639 2 11 6 J1939 ESP Messages Invalid Data 231 639 2

11 7 11 12 J1939 HSA Switch Error or Unavailable 231 639 2

12 1 Stop Lamp Switch Not Detected 55 1045 7 12 2 Stop Lamp Switch Always On 231 639 2 12 3 Dynamometer Test Mode 17 576 14

12 4 12 5

12 6 ABS Dash Indicator Circuit DTC 23 811 2 12 7 PMV Common Shorted to Ground 93 802 4 12 8 PMV Common Shorted to Voltage 93 802 3 12 9 ATC Disabled to Prevent Brake Fade 17 614 14 12 10 Tire Size Out of Range (Front to Rear) 79 1069 13 12 11 Wheel Speed Sensors Reversed on an Axle 22 810 7

12 12 12 13 Diff Lock Solenoid Shorted to Voltage 102 564 3

12 14 Sensor CAN Supply Voltage Error 103 1808 2 12 15-21 Reserved N/A N/A N/A 12 22 ESP Sensor Voltage Out of Range 103 1808 2 12 23 I/O2 or I/O3 Shorted High 154 614 3 12 24 HSA Solenoid Shorted to Voltage 94 2622 3 12 25 HSA Solenoid Open or Shorted to Ground 94 2622 5

13 1 ECU (02) 254 629 12 13 2 ECU (10) 254 629 12

Time-Out or Invalid Data on ETC7/VP15 (for

Retarder Relay or HSA Lamp Open Circuit or

Retarder Relay Circuit or HSA Lamp Shorted to

Diff Lock Solenoid Shorted to Ground or Open

DTC Description

J1939 DTCs

Miscellaneous DTCs

HSA-Function)

Shorted to Ground

Voltage

Circuit

ECU DTCs

J1587

J1939

SID

SPN

231 639 2

13 801 2 13 801 3

102 564 5

Inactive Diagnostic Trouble Code Mode

The ECU stores past trouble codes and comments (such as conﬁ guration changes) in its memory. This record is commonly referred to as “event history.” When an active trouble code is cleared, the ECU stores it in the event history memory as an inactive trouble code.

Using blink codes, the technician may review all inactive trouble codes stored on the ECU. The ABS indicator lamp will display inactive diagnostic blink codes when the diagnostic blink code switch is depressed and released two times.

Inactive trouble codes, and event histor y, may be retrieved and cleared by using a hand-held or PC-based diagnostic tool, such as the Bendix

Clearing Active Diagnostic Trouble Codes

The ECU will clear active trouble codes when the diagnostic blink code switch is depressed and released three times.

BW1114 Quick Reference Catalog BW1231 Tractor & Truck Air Brake System Troubleshooting Wallchart BW1396 Tractor & Truck Air Brake System Troubleshooting BW1555 Brake Balance Procedure BW2780 Troubleshooting Bendix BW5057 Air Brake Handbook SD-13-4869 Service Data Sheet for EC-60

FMI

ACom™ Diagnostics software.

Visit www.bendix.com or www.foundationbrakes.com for Service Data

Bendix Blink Code 1st digit 2nd digit

Sheets and other literature such as the following:

ESP® Stability System Wallchart version of this piece

™

ABS/ATC Advanced Controllers

J1587

DTC Description

13 3 ECU (11) 254 629 12 13 4 ECU (12) 254 629 2 13 5 ECU (13) 254 629 2 13 6 ECU (14) 254 629 12 13 7 13 8 ECU (16) 254 630 13

13 9 13 10 ECU (18) 254 630 12

13 11 ECU (1A) 254 802 12 13 12 ECU (1B) 254 802 12 13 13 ECU (80) 254 629 12 13 14 ECU (04) 254 629 12 13 15 ECU (06) 254 629 12 13 16 ECU (0E) 254 629 12 13 17 ECU (0D) 254 629 2 13 18 ECU (19) 254 629 2 13 19 ECU (1C) 253 630 12 13 20 ECU (27) 253 630 12 13 21 ECU (1D) 253 630 13 13 22 ECU (1E) 253 630 13 13 23 ECU (28) 253 630 13 13 24 ECU (37) 254 629 12 13 25 VIN / Chassis Mis-Match 254 629 12

18 1 TCV DA Solenoid Shorted to Ground 18 806 4 18 2 TCV DA Solenoid Shorted to Voltage 18 806 3 18 3 TCV DA Solenoid Open Circuit 18 806 5 18 4 TCV DA Conﬁ guration Error 18 806 13 19 1 TCV SA Solenoid Shorted to Ground 19 807 4 19 2 TCV SA Solenoid Shorted to Voltage 19 807 3 19 3 TCV SA Solenoid Open Circuit 19 807 5 19 4 TCV SA Conﬁ guration Error 19 807 13

21 1 SAS Not Calibrated 89 1807 13 21 2 SAS Calibration in Progress 89 1807 13 21 3 SAS Static Signal 89 1807 2 21 4 SAS Signal Out of Range 89 1807 2 21 5 SAS Signal Reversed 89 1807 2 21 6 SAS Invalid Signal 89 1807 12 21 7 SAS Gradient Error 89 1807 2 21 8 SAS CAN Timeout 89 1807 9 21 9 SAS Long Term Calibration Error 89 1807 2 21 10 SAS Plausibility Check (Ref Yaw Rate) 89 1807 2

22 1 YRS Signal Out of Range 103 1808 2 22 2 YRS Sensor Reversed Signal 103 1808 2 22 3 YRS Invalid Signal 103 1808 2 22 4 YRS Gradient Error 103 1808 2 22 5 YRS CAN Timeout 103 1808 9 22 6 YRS Static BITE Error 103 1808 2 22 7 YRS Dynamic BITE Error 103 1808 2 22 8 YRS Fast Calibration Error 103 1808 2 22 9 YRS Static Calibration Error 103 1808 2 22 10 YRS Normal Calibration Error 103 1808 2 22 11 YRS Sensitivity Calibration Error 103 1808 2 22 12 YRS Plausibility Check (Ref Yaw Rate) 103 1808 2

22 13 22 14

22 15 YRS Sign Check Not Completed 89 1808 13 22 16 YRS Vibration Detected 103 1808 2

23 1 LAS Signal Out of Range 99 1809 2 23 2 LAS Calibration in Progress 99 1809 13 23 3 LAS Static Calibration Error 99 1809 2 23 4 LAS Long Term Calibration Error 99 1809 2 23 5 LAS Plausibility Error (Inside Model Based Limits) 99 1809 2

23 6 23 7 Erratic ESP Sensor Signal 99 1809 14

24 1 PS1 Open or Shorted 77 1067 2 24 2 PS2 Open or Shorted 78 1068 2 24 3 PS3 Open or Shorted 69 1059 2 24 4 PS1/PS2 Plausibility Error 77 1067 11 24 5 PS Supply Voltage Error 77 1067 2 24 6 PS Not Calibrated 77 1067 7

YRS Plausibility Error (Inside Model Based

YRS Plausibility Error (Outside Model Based

Lateral Acceleration Sensor DTCs

LAS Plausibility Error (Outside Model Based

ECU (15) ECU (17)

TCV DTCs

Steering Angle Sensor DTCs

Yaw Rate Sensor DTCs

Limits) Limits)

Limits)

Pressure Sensor DTCs

J1939

SID

SPN

254 629 2 254 630 13

103 1808 2 103 1808 2

99 1809 2

See the Service Data sheet for full test and repair procedures:

SD-13-4869 Bendix

EC-60™ Advanced ABS Controllers

FMI

Troubleshooting Bendix

ESP

Stability System

ESP

Stability System

Typical Tractor System Schematic with ESP® Stability

™

Control

™

Wheel

WS-24 Speed Sensor

M-32™ /

™

M-32QR Modulator (4 places)

Antilock Traction

Relay Valve

™

Drum Brake w/

ASA-5® Automatic

Slack Adjuster and

Service Chamber

Control Valve

™

ADB-22X Disc Brake

E-8P® / E-6

Brake Valve with

™

BVA-85

Brake

Valve Actuator

Tu-Flo Tu-Flo® 750

BA-921® / BA-922®

Air Compressor

MV-3

550/

AD-IS

Air Dryer

SAS-60™ Steering

Angle

Sensor

™

M-32

Modulator

DC-4

Axle Reservoir

/ M-32QR™

Double

Check Valve

TCS-9000

Valve

YAS-60

Rate & Lateral

Acceleration

Low Pressure

Indicator

Front

PP-5

Valve

Stop Light Switch

EC-60 Electronic Controller

™

Advanced

™

Yaw

Sensor

Rear

Axle Reservoir

To Accessories

TP-3DC

Protection

™

Tractor

Valve

Module (RAM)

with ATR-6

Relay Valve

™

Rear Axle

™

Traction

ASA-5

Spring Brake Chamber

ADB-22X

Disc Brake

ES™ Drum Brake w/

Automatic Slack

Adjuster and SB-4

Typical Truck System Schematic with ESP

Control

Supply

Hose

Couplings

™

Antilock

QR-1C

Quick

Release

Valve

™

Wheel

WS-24 Speed Sensor

™

Traction

Relay Valve

™

Drum Brake w/

ASA-5® Automatic

Slack Adjuster and

Service Chamber

TRUCKS AND TRUCK TRACTORS:

Charging Primary Secondary Park Parking Accessories

(Supply) (Control)

™

WS-24

Wheel

Speed Sensor

ADB-22X

Disc

Brake

M-32™ /

™

M-32QR Modulator (4 places)

™

E-8P

Brake Valve

Stop

Light

Switch

Oriﬁ ce Check

Valve

Air Dryer

Tu-Flo

550/Tu-Flo® 750/

BA-921®/ BA-922

Air Compressor

/ E-6®

To Accessories

AD-9

AD-IP

SAS-60

Steering Angle

Sensor

PP-DC® Park

Control Valve

™

PR-3™/ PR-4™

Valve

Safety

Valve

Supply

Reservoir

Stability

™

WS-24

Wheel

™

EC-60 Electronic Controller

Advanced

Notes:

The color coding of the brake system schematic follows TMC Recommended Practice #423. Air disc & drum brake actuation combined on a single axle are shown for pictorial purposes only.

Low

Pressure Indicator

Front

Axle Reservoir

YAS-60™ Yaw

Rate & Lateral

Acceleration

Sensor

Rear

Axle Reservoir

Speed Sensor

Antilock Traction

Relay Valve

™

Drum Brake w/

ASA-5® Automatic Slack

Adjuster and SB-4™

Spring Brake Chamber

ADB-22X

Disc

Brake

SR-7

Spring Brake

Modulating

Valve

WS-24 Speed Sensor

™

Wheel

™

Troubleshooting: PC-based Troubleshooting, Blink Codes and Diagnostic Tools & Modes

The information presented here is condensed from the troubleshooting section of the Bendix® EC-60™ Advanced ABS Controller Service Data Sheet, SD-13-4869 available for download on www.bendix.com. Whenever possible, use a PC-based diagnostic tool, such as the Bendix ACom™ Software (free download from www.bendix.com) or hand-held Bendix® Remote Diagnostic Unit (RDU). The Bendix® ACom™ Software uses on-screen troubleshooting steps to help correct any DTCs. The Bendix® ACom™ Software (BW2329) may also be ordered on CD from the Literature Center at www.bendix.com.

Below: Bendix® Remote Diagnostic Unit (RDU), Right: Bendix Diagnostics Software for ABS

ACom™

Blink codes allow a technician to troubleshoot ABS problems in situations where a hand-held or PC-based diagnostic tool is not available. Instead, information about the ABS system is communicated by the ECU, using the ABS indicator lamp to display sequences of blinks.

Note: The ECU will not enter the diagnostic blink code mode if the wheel speed sensors show that the vehicle is in motion. If the ECU is in the diagnostic blink code mode and then detects vehicle motion, it will exit the blink code mode.

In addition, by operating the blink code switch as described below, one of several diagnostic modes can be entered. See Diagnostic Modes section below.

Blink Code Switch Activation

When activating the blink code switch:

1. Wait at least two seconds after “ignition on.” (Except when entering Reconﬁ guration Mode

- see Service Data sheet.)

2. For the ECU to recognize that the switch is activated “on,” the technician must press for at

BLINK CODES

ECU DIAGNOSTICS

™

The EC-60

controller contains self-testing diagnostic circuitry that continuously checks for the normal operation of internal components and circuitry, as well as external ABS components and wiring.

Active Diagnostic Trouble Codes (DTCs)

When an erroneous system condition is detected, the EC-60

™

controller:

least 0.1 seconds, but less than 5 seconds. (If the switch is held for more than 5 seconds, the ECU will register a malfunctioning switch.)

3. Pauses between pressing the switch when a sequence is required, (e.g. when changing mode) must not be longer than 2 seconds.

4. After a pause of 3.5 seconds, the ECU will begin responding with output information blinks.

1. Illuminates the appropriate indicator lamp(s) and disengages part or all of the ABS, ATC and ESP functions. (See Service Data Sheet.)

2. Places the appropriate trouble code information in the ECU memory.

3. Communicates the appropriate trouble code information over the serial communications diagnostic link as required. Hand-held or PC-based diagnostic tools attach to the vehicle diagnostic connector, typically located on or under the dash.

When using our PC-based Bendix

ACom™ Software, follow the on-screen troubleshooting steps to correct any DTCs. A hand-held tool such as the Bendix Remote Diagnostic Unit (RDU) provides direct access to the DTCs without the need to use blink codes.

www.bendix.com

www.foundationbrakes.com

Blink Code Timing

The ECU responds with a sequence of blink codes. The overall blink code response from the ECU is called a “message.” Each message includes, depending on the mode selected by the technician, a sequence of one or more groups of blinks. Simply record the number of blinks for each sequence and then use the brief troubleshooting index shown here, or full troubleshooting information in the Service Data sheet, for active or inactive trouble codes.

NOTE:

1. Sequences of blinks illuminate the ABS indicator lamp for half a second, with half-second pauses between them.

2. Pauses between blink code digits are 1.5 seconds.

3. Pauses between blink code messages are 2.5 seconds.

4. The lamp remains on for 5 seconds at the end of the messages.

Once the ABS indicator lamp begins displaying a sequence of codes, it continues until all blink code messages have been displayed and then returns to the normal operating mode. During this time, the ECU will ignore any additional blink code switch activation.

All trouble codes, with the exception of voltage and J1939 trouble codes, will remain in an active state for the remainder of the power cycle.

Voltage trouble codes will clear automatically when the voltage returns within the required limits. All ABS functions will be re-engaged.

J1939 trouble codes will clear automatically when communications are re-established.