Actividades, tarea y metodología - Propuesta del Programa de Desarrollo de Habilidades Directiv

Capítulo 6. Propuesta del Programa de Desarrollo de Habilidades Directivas

6.10. Actividades, tarea y metodología

ACT PWR Relay (Actuator Power)

SPN FMI Condition

None No engine actuator power supplied from chassis harness to engine harness.

Figure 123 Function diagram for the ACT PWR

The function diagram for ACT PWR relay includes the following:

• Engine Control Module (ECM)

with Barometric Absolute Pressure (BARO) Internal Sensor

• Actuator Power (ACT PWR) Relay

• Switched Battery (SWBAT)

• Battery (B+)

• Fuse

• Engine 24–pin Connector

ACT PWR Relay Location

The ACT PWR relay is located in the engine harness, next to the ECM PWR relay.

Tools

• Electronic Service Tool (EST) with ServiceMaxx™

software (page 432)

• NAVCoM or NAVLink Interface Kit (page 433)

• Digital Multimeter (DMM) (page 431)

• 1180-N4-0X0 – 180-Pin Breakout Box (page 430)

• Breakout Harness 4674 (ACT PWR) (page 434)

ACT PWR Relay Pin-point Diagnostics

SPN FMI Condition Possible Causes

None No power supplied at engine 24-Pin

connector. • Power loss to ECM

• Blown fuse

• Poor electrical connections (ECM PWR, ECM GND, or VIGN)

Figure 124 ACT PWR circuit diagram

1. Verify the ECM is powered by either cranking the engine, starting the engine, or communication is established with the EST.

• If the ECM is not powering up, see ECM PWR (page 289).

• If the ECM is powered, but there is no power going to the 24-Pin connector, proceed to the next step.

2. Disconnect the engine to vehicle 24-Pin connector.

NOTE: Inspect connector for damaged pins, corrosion, or loose pins. Repair if necessary.

3. Go to Voltage Checks at 24-Pin Connector.

Voltage Checks at 24-Pin Connector

CAUTION: To prevent engine damage, turn the ignition switch OFF before disconnecting 24-Pin connector.

Connect Breakout Harness 6020 to 24-Pin connector. Leave the engine harness disconnected. Turn ignition switch to ON. Use DMM to measure voltage.

Test Point Spec Comment – < Less than, > Greater than

1 to GND B+ If < B+, check for OPEN ACT PWR circuit, blown fuse, OPEN MPR control circuit, or failed relay. Do Voltage Checks at Relay.

1 to 12 B+ If < B+, check for OPEN ACT PWR GND circuit.

1 to 23 B+ If < B+, check for OPEN ACT GND circuit.

Voltage Checks at Relay

Connect Breakout Harness 4674 between relay and relay socket. Turn ignition switch to ON. Use DMM to measure voltage.

Test Point Spec Comment – < Less than, > Greater than

86 to GND B+ If < B+, check power circuit to relay coil for OPEN or short to GND, or blown fuse.

30 to GND B+ If < B+, check power circuit to relay switch for OPEN or short to GND, or blown fuse.

85 to B+ B+ If < B+, check MPR control circuit for OPEN or short to PWR. Go to MPR Resistance Check.

87 to GND B+ If < B+, replace relay.

If B+, check for OPEN circuit between relay and the 24-Pin connector.

Main Power Relay Control Circuit Resistance Check

Turn ignition switch to OFF. Connect 180-Pin Breakout Box and Breakout Harness 4674. Leave ECM, ECM PWR, and ACT PWR relay disconnected. Use DMM to measure resistance.

Test Point Spec Comment – < Less than, > Greater than C-70 to 85 < 5 Ω If > 5 Ω, check MPR control circuit for OPEN.

C-70 to GND > 1 kΩ If < 1 kΩ, check MPR control circuit for short to GND.

ACT PWR circuit to 24-Pin connector

Turn ignition switch to OFF. Connect 180-pin Breakout Box and Breakout Harness 6020. Leave ACT PWR relay and Engine harness disconnected. Use DMM to measure resistance.

ACT PWR Circuit Operation

The ACT PWR relay is controlled by the ECM, similar to the way the ECM controls its other relays. When the ECM receives the VIGN signal from the ignition switch, the ECM will enable the ECM relay and the ACT PWR relay.

The ECM receives SWBAT power at Pin C-45. This signals the ECM to provide a ground path from Pin C-70 to 85 to switch the ACT PWR relay. Switching the relay provides power from the battery positive

terminal through a fuse and relay contacts 30 and 87 to Pin 1 and Pin 3 on the 24-Pin connector.

Pin 23 and Pin 12 on the 24-Pin connector are ACT GND circuits.

Fault Detection / Management

No DTC’s are set for ACT PWR circuit failure. If ACT PWR is lost, the EGR will set KOEO Standard Test DTC’s.

ACM Power (Aftertreatment Control Module)

SPN FMI Condition

609 3 ACM Switched voltage too HIGH 609 4 ACM Switched voltage too LOW 609 12 ACM Internal chip Error

609 19 ACM not detected on J1939

1231 19 ACM Error – J1939 communication fault

Figure 125 Functional Diagram for ACM

The functional diagram for the ACM includes the following:

Function

The ACM controls the Downstream Injection (DSI)

Component Location

The ACM is installed underneath the cab just below the driver’s floorboard.

Tools

• Electronic Service Tool (EST) with ServiceMaxx™

software (page 432)

• NAVCoM or NAVLink Interface Kit (page 433)

• Digital Multimeter (DMM) (page 431)

• International® Electronic Engine Terminal Test Kit (page 432)

ACM PWR Pin-point Diagnostics

SPN FMI Condition Possible Causes

609 3 ACM Switched voltage too HIGH • Jump start using more than system voltage

• Batteries wired incorrectly 609 4 ACM Switched voltage too LOW • Low discharge batteries

• Charging system failure

• High resistance in ACM powering circuits 609 12 ACM Internal chip Error • Internal ACM fault, replace module 609 19 ACM not detected on J1939 • J1939 circuit fault between ECM and ACM

• ACM power or ground circuit faults

• Failed ACM 1231 19 ACM Error - J1939 communication

fault

• ACM J1939 communication circuit fault

Figure 126 ACM PWR circuit diagram

ACM Power circuit checks

ACM disconnected. Turn ignition switch to ON. Use DMM to measure voltage.

Test Point Spec Comment – < Less than, > Greater than

C-52 to GND B+ If < B+, check for OPEN on SWBAT circuit or blown fuse.

C-1 to B+

C-2 to B+

C-3 to B+

C-4 to B+

C-5 to B+

B+

If < B+, check for OPEN in ACM ground circuit.

C-6 to GND C-7 to GND C-8 to GND

B+

If < B+, check for OPEN in power circuit.

J1939 Voltage Checks

ACM disconnected. Turn ignition switch to ON. Use DMM to measure voltage.

Test Point Spec Comment – < Less than, > Greater than

14 to GND 1 V to 4 V The sum of 14 to GND and 15 to GND should equal 4 V to 5 V.

15 to GND 1 V to 4 V The sum of 15 to GND and 14 to GND should equal 4 V to 5 V.

If measurements are within specifications, continue to J1939 Harness Resistance Check.

J1939 Harness Resistance Check

Breakout box connected to the ECM, leave ECM and ACM disconnected. Turn ignition switch to OFF. Use DMM to measure resistance.

Test Point Spec Comment – < Less than, > Greater than C-61 to 14

C-62 to 15

< 5 Ω

If > 5 Ω, check for OPEN circuit.

If ACM voltage checks and J1939 checks are all within specifications, replace the ACM module.

ACM VREF Circuits

SPN FMI Condition

3512 14 ACM VREF 1 & 2 voltage deviation

Figure 127 Functional Diagram for ACM

The functional diagram for the ACM includes the following:

• Aftertreatment Control Module (ACM) Function

The ACM supplies a 5-volt reference to the AFT Fuel Pressure 1 and AFT Fuel Pressure 2 sensors. If this circuit is shorted to power or ground, both sensors become inoperative.

Component Location

The ACM is installed underneath cab just below the driver’s floorboard.

Tools

• Electronic Service Tool (EST) with ServiceMaxx™

software (page 432)

• NAVCoM or NAVLink Interface Kit (page 433)

• Digital Multimeter (DMM) (page 431)

• Breakout Harness 6020 (24-Pin) (page 438)

• International® Electronic Engine Terminal Test Kit (page 432)

ACM VREF Circuit

SPN FMI Condition Possible Causes

3512 14 ACM VREF 1 and 2 voltage deviation • ACM VREF circuit short to PWR

• ACM VREF circuit short to GND

• Failed sensor causing short to GND on VREF circuit

Figure 128 ACM PWR circuit diagram

Connector Voltage Check

Connect Breakout Harness 6020, disconnect AFTFIS and AFTFP2 sensors. Turn ignition switch to the ON position. Use DMM to measure voltage.

Test Point Spec Comment – < Less than, > Greater than

Pin 8 to B+ 0 V If > 0.25 V, check for short to PWR. Go to Harness Resistance Check.

Pin 6 to GND 5 V ± 0.5 V If < B+, check SIG GND for OPEN circuit. Go to Harness Resistance Check.

Pin 15 to GND 5 V ± 0.5 V If < 4.5 V, check for OPEN or short to GND. Go to Harness Resistance Check.

Pin 16 to B+ 0 V If < B+, check SIG GND for OPEN circuit. Go to Harness Resistance Check.

Harness Resistance Check

Turn ignition switch to OFF, disconnect 86-pin connector and AFTIS and AFTFP2 sensors. Use DMM to measure resistance between ACM connector and sensor connectors.

Test Point Spec Comment – < Less than, > Greater than AFTFIS

21 to 1 23 to 3

< 5 Ω

If > 5 Ω, check for OPEN circuit.

AFTFP2 43 to 1 41 to 2

< 5 Ω

If > 5 Ω, check for OPEN circuit.

AFTFD (aftertreatment Fuel Doser)

SPN FMI Condition

3471 1 Fuel Pressure 1 below desired (Low system pressure)

3471 7 AFT Fuel Doser valve not responding as expected

3471 10 AFT Fuel Doser valve abnormal rate of change

3479 3 AFT Fuel Doser Valve Short to PWR 3479 4 AFT Fuel Doser Valve Short to GND

Figure 129 Functional diagram for AFTFD

The functional diagram for the AFTFD includes the following:

• Aftertreatment Control Module (ACM)

• Down Stream Injection (DSI) unit

• Aftertreatment Fuel Pressure 2 (AFTFP2)

• Aftertreatment Fuel Doser (AFTFD) Function

Pressurized fuel is supplied to the AFTFD through the fuel filter housing assembly. When the conditions required for regeneration are met, the ACM sends

voltage to the AFTFD to open and inject fuel into the turbo exhaust pipe.

Component Location

The AFTFD is integrated into the Down Stream Injection (DSI) unit located on the left side of the engine, to the rear of fuel filter module.

Tools

• Electronic Service Tool (EST) with ServiceMaxx™

software (page 432)

• NAVCoM or NAVLink Interface Kit (page 433)

• Digital Multimeter (DMM) (page 431)

• Breakout Harness 4828 (AFTFD) (page 435)

• International® Electronic Engine Terminal Test Kit (page 432)

Figure 130 AFTFD circuit diagram

AFTFD Connector End Diagnostics

SPN FMI Condition Possible Causes

3471 1 Fuel Pressure 1 below desired (Low system pressure)

• Low Fuel Delivery Pressure

• Restricted Fuel Filter

• AFT Fuel Shutoff Valve failure

• Biased AFT Fuel Pressure 1 sensor or circuit 3471 7 AFT Fuel Doser valve not responding

as expected

• Lower fuel delivery pressure.

• Restricted fuel filter.

• AFT Fuel Shutoff Valve failure.

• Biased AFT Fuel Pressure 1 sensor or circuit 3471 10 AFT Fuel Doser valve abnormal rate

of change

• AFT Fuel Doser failure

3479 3 AFT Fuel Doser Valve Short to PWR • AFTFD circuit short to PWR

• Failed AFTFD

3479 4 AFT Fuel Doser Valve Short to GND • AFTFD circuit short to GND

• Failed AFTFD NOTE: The KOEO Standard Test or KOEO Output

State HIGH or LOW does not cycle this actuator.

NOTE: The sensors connected to the Aftertreatment Control Module (ACM) cannot be monitored using ServiceMaxx™. If a DTC is set for this actuator, all you can do is verify that there is not a circuit fault.

If circuits check out acceptable, then replace the actuator.

Connector Voltage Check

Connect Breakout Harness 4828 to engine harness and leave AFTFD disconnected. Turn ignition switch to ON. Use DMM to measure voltage.

Test Point Spec Comment – < Less than, > Greater than

1 to GND 6.0 V +/- 1.0 V If < 5.0 V, check for OPEN circuit or short to GND, go to Harness Resistance Check (page 183).

If > 7.0 V, check for short to PWR, go to Harness Resistance Check.

2 to B+ B+ If < B+, check for OPEN circuit. Do Harness Resistance Check (page 183).

If measurements are within specifications, then replace the AFT Fuel Doser.

Harness Resistance Check

Turn ignition switch to OFF. Connect Breakout Harness 4828 to engine harness and leave AFTFD and ACM disconnected. Use DMM to measure resistance between AFTFD connector and ACM connector.

Test Point Spec Comment – < Less than, > Greater than 1 to GND

1 to Pin 10

> 1 kΩ

< 5 Ω

If < 1k Ω, check for short to GND.

If > 5 Ω, check for OPEN circuit.

2 to GND 2 to Pin 30

> 1 kΩ

< 5 Ω

If < 1k Ω, check for short to GND.

If > 5 Ω, check for OPEN circuit.

Aftertreatment Fuel Inlet Sensor (AFTFIS)

SPN FMI Condition

3480 3 AFTFP1 signal Out of Range HIGH 3480 4 AFTFP1 signal Out of Range LOW 5456 3 AFTFT signal Out of Range HIGH 5456 4 AFTFT signal Out of Range LOW

Figure 131 Functional diagram for the AFTFIS sensor

The functional diagram for the AFTFIS includes the following:

• Aftertreatment Control Module (ACM)

• J1939 Data Link

• Down Stream Injection (DSI) unit

• Aftertreatment Fuel Inlet Sensor (AFTFIS)

• Aftertreatment Fuel Temperature (AFTFT)

• Aftertreatment Fuel Pressure 1 (AFTFP1)

• Aftertreatment Fuel Doser (AFTFD)

• Aftertreatment Fuel Shutoff Valve (AFTFSV)

Function

The AFTFIS is comprised of a fuel temperature and fuel pressure sensor. The AFTFIS monitors fuel pressure and fuel temperature in the aftertreatment fuel system and provides a feedback signal to the ACM.

Sensor Location

The AFTFIS is integrated into the Down Stream Injection (DSI) unit located on the left side of the engine, to the rear of fuel filter module.

• Electronic Service Tool (EST) with ServiceMaxx™

software (page 432)

• NAVCoM or NAVLink Interface Kit (page 433)

• Digital Multimeter (DMM) (page 431)

• Breakout Harness 6027 (AFTFIS) (page 439)

• International® Electronic Engine Terminal Test Kit (page 432)

AFTFIS Sensor End Diagnostics

SPN FMI Condition Possible Causes

3480 3 AFTFP1 signal Out of Range HIGH • AFTFP1 signal circuit OPEN or short to PWR

• Failed AFTFIS

3480 4 AFTFP1 signal Out of Range LOW • AFTFP1 signal circuit short to GND

• Failed AFTFIS

5456 3 AFTFT signal Out of Range HIGH • AFTFT signal circuit OPEN or short to PWR

• Failed AFTFIS

5456 4 AFTFT signal Out of Range LOW • AFTFT signal circuit short to GND

• Failed AFTFIS

Figure 132 AFTFIS circuit diagram

NOTE: The sensors connected to the Aftertreatment Control Module (ACM) cannot be monitored using ServiceMaxx™. If a DTC is set for this sensor, all you can do is verify that there is not a circuit fault. If circuits are acceptable, replace the sensor.

AFTFIS Pin-Point Diagnostics

Connector Voltage Check

Connect Breakout Harness 6027. Leave sensor disconnected. Turn the ignition switch to ON. Use DMM to measure voltage.

Test Point Spec Comment – < Less than, > Greater than

1 to B+ B+ If < B+, check SIG GND for OPEN circuit, go to Harness Resistance Check.

2 to GND 4.8 V ± 1.0 V If < 3.8 V, check AFTFP1 for OPEN circuit, go to Harness Resistance Check.

3 to GND 5.0 V ± 1.0 V If < 4.0 V, check VREF for OPEN circuit, go to Harness Resistance Check.

4 to GND 4.4 V ± 1.0 V If < 3.4 V, check VREF for OPEN circuit, go to Harness Resistance Check.

If circuit measurements are all within specification, then replace the sensor.

Harness Resistance Check

Turn ignition switch to OFF. Connect Breakout Harness 6027. Leave ACM and AFTFIS disconnected. Use DMM to measure resistance between AFTFIS connector and ACM connector.

Test Point Spec Comment – < Less than, > Greater than 1 to Pin 21 < 5 Ω If > 5 Ω, check SIG GND circuit for OPEN.

2 to Pin 80 < 5 Ω If > 5 Ω, check AFTFP1 circuit for OPEN.

3 to Pin 23 < 5 Ω If > 5 Ω, check VREF signal circuit for OPEN.

4 to Pin 22 < 5 Ω If > 5 Ω, check AFTFT circuit for OPEN.

AFTFIS Circuit Operation

The AFTFIS is a dual purpose sensor that monitors both Aftertreatment Fuel Pressure 1 (AFTFP1) and Aftertreatment Fuel Temperature (AFTFT).

AFTFP1 Circuit Operation

The AFTFP1 sensor is supplied with 5 volts at Pin 3 from Pin 23 of the 86-pin ACM connector. The sensor is grounded at Pin 1 from Pin 21 of the 86-pin ACM

connector and returns the variable voltage signal from Pin 2 to Pin 80 of the 86-pin ACM connector.

AFTFT Circuit Operation

The AFTFT sensor is supplied with 5 volts at Pin 3 from Pin 23 of the 86-pin ACM connector. The sensor is grounded at Pin 1 from Pin 21 of the 86-pin ACM connector and returns the variable voltage signal from Pin 4 to Pin 22 of the 86-pin ACM connector.

Aftertreatment Fuel Pressure 2 Sensor (AFTFP2)

SPN FMI Condition

4077 3 AFTFP2 signal Out of Range HIGH 4077 4 AFTFP2 signal Out of Range LOW 4077 10 AFTFP2 signal abnormal rate of change

Figure 133 Functional diagram for the AFTFP2 sensor

The functional diagram for the AFTFP2 sensor includes the following:

• Aftertreatment Control Module (ACM)

• Down Stream Injection (DSI) unit

• AFTFP2 sensor

• Aftertreatment Fuel Doser (AFTFD)

• Aftertreatment Fuel Shutoff Valve (AFTFSV) Function

The AFTFP2 sensor monitors the fuel pressure in the aftertreatment fuel system and provides a feedback signal to the ACM.

Sensor Location

The AFTFP2 sensor is integrated into the Down Stream Injection (DSI) unit located on the left side of the engine, to the rear of fuel filter module.

Tools

• Electronic Service Tool (EST) with ServiceMaxx™

software (page 432)

• NAVCoM or NAVLink Interface Kit (page 433)

• Digital Multimeter (DMM) (page 431)

• Breakout Harness 6027 (AFTFP2) (page 439)

• International® Electronic Engine Terminal Test Kit (page 432)

AFTFP2 Sensor End Diagnostics

SPN FMI Condition Possible Causes

4077 3 AFTFP2 signal Out of Range HIGH • AFTFP2 signal circuit OPEN or short to PWR

• Failed AFTFIS

4077 4 AFTFP2 signal Out of Range LOW • AFTFP2 signal circuit short to GND

• Failed AFTFIS 4077 10 AFTFP2 signal abnormal rate of

change

• Biased sensor or circuit

If circuits check out acceptable, then replace the sensor.

Connector Voltage Check

Connect Breakout Harness 6027. Leave sensor disconnected. Turn the ignition switch to ON. Use DMM to measure voltage.

Test Point Spec Comment – < Less than, > Greater than

1 to GND 5.0V +/- 1.0V If < 4.0V, check VREF for OPEN circuit, go to Harness Resistance Check.

2 to B+ B+ If < B+, check SIG GND for OPEN circuit, go to Harness Resistance Check.

3 to GND 5.4V +/- 1.0V If < 4.4V, check AFTFP2 for OPEN circuit, go to Harness Resistance Check.

If circuit measurements are all within specification, then replace the sensor.

AFTFP2 Pin-point Diagnostics

Harness Resistance Check

Turn ignition switch to OFF. Connect Breakout Harness 6027. Leave ACM and AFTFP2 sensor disconnected. Use DMM to measure resistance between AFTFP2 connector and ACM connector.

Test Point Spec Comment – < Less than, > Greater than 1 to Pin 43 < 5 Ω If > 5 Ω, check VREF signal circuit for OPEN.

2 to Pin 41 < 5 Ω If > 5 Ω, check SIG GND circuit for OPEN.

3 to Pin 42 < 5 Ω If > 5 Ω, check AFTFP2 circuit for OPEN.

AFTFP2 Circuit Operation

The AFTFP2 sensor is a pressure sensor that is supplied with 5 volts at Pin 1 from ACM Pin 43. The

sensor is grounded at Pin 2 from ACM Pin 41 and returns a variable voltage signal from Pin 3 to ACM Pin 42.

Aftertreatment Fuel Shuttoff Valve (AFTFSV)

SPN FMI Condition

3482 3 AFT Fuel Shutoff Valve short to PWR 3482 4 AFT Fuel Shutoff Valve short to GND 3482 7 AFT Fuel Shutoff Valve not responding as

expected

Figure 135 Functional diagram for AFTFSV

The functional diagram for the AFS valve includes the following:

• Aftertreatment Control Module (ACM)

• Down Stream Injection (DSI) unit

Function

The AFTFSV controls the fuel supply to the AFTFD when regeneration is required. The AFTFSV is controlled by the ACM.

Tools

• Electronic Service Tool (EST) with ServiceMaxx™

software (page 432)

• NAVCoM or NAVLink Interface Kit (page 433)

• Digital Multimeter (DMM) (page 431)

• Breakout Harness 6021 (AFTFSV) (page 439)

• International® Electronic Engine Terminal Test Kit (page 432)

AFTFSV Connector End Diagnostics

SPN FMI Condition Possible Causes

3482 3 AFT Fuel Shutoff Valve short to PWR • AFTFSV circuit OPEN or short to PWR

• Failed AFTFSV

3482 4 AFT Fuel Shutoff Valve short to GND • AFTFSV circuit short to GND

• Failed AFTFSV 3482 7 AFT Fuel Shutoff Valve not responding

as expected

• Biased AFT Fuel Pressure 1 sensor or circuit

• AFT Fuel Shutoff Valve failure

Figure 136 AFTFSV circuit diagram

NOTE: The KOEO Standard Test or KOEO Output State HIGH or LOW does not cycle this actuator.

If circuits check out acceptable, then replace the sensor.

Connector Voltage Check

Connect Breakout Harness 6021 to engine harness and leave AFTFSV disconnected. Turn ignition switch to ON. Use DMM to measure voltage after 60 seconds.

Test Point Spec Comment – < Less than, > Greater than

1 to GND 6.0 V +/- 1.0 V If < 5.0 V, check for OPEN circuit or short to GND, go to

In document Propuesta de un programa de desarrollo de habilidades directivas para los productores de amaranto de la delegación Xochimilco (página 103-115)