MBE 900 4000 Troubleshooting

Section 14.1 Description of PID 168 — Battery Voltage Outside Normal Operating Range

Section 14.1
Description of PID 168 — Battery Voltage Outside Normal Operating Range

PID 168 indicates that the PLD-MR control unit has detected engine battery voltage outside the normal operating range.‪

The diagnostic condition is typically:‪

  • Battery Voltage High (168 03)
  • Battery Voltage Low (168 04)

Section 14.1.1
Power Supply

The voltage supply for the PLD-MR is listed in Table "PLD-MR Voltage Supply" .‪

Voltage Supply

Voltage

24 V

12 V

Nominal Voltage‪

22 V ≤ V ≤ 30 V‪

11 V ≤ V ≤ 16 V‪

Low Voltage‪

8 V ≤ V ≤ 22 V‪

Limited Operating Range‪

6.5 V ≤ V ≤ 11 V‪

Limited Operating Range‪

Overload Switch-Off‪

V > 33 V‪

V > 33 V‪

Table 1. PLD-MR Voltage Supply

See Figure "PLD-MR Connectors" for the connectors to the PLD-MR.‪

Click to see this graphic in a separate window

Figure 1. PLD-MR Connectors

The wiring for the VIH 16-pin connector to the PLD-MR is listed in Table "16-Pin Connector to the PLD-MR" . The side of the connector shown is looking into the pins.‪

Pin

Signal Type

Function

Connector

1‪

Data Link‪

CAN Interface (High Line)‪

Click to see this graphic in a separate window

Front‪

Looking into the Pins on the Harness‪

2‪

Data Link‪

CAN Interface (Low Line)‪

3‪

Data Link‪

CAN HF Ground‪

4‪

Data Link‪

CAN HF Ground‪

5‪

Power Supply‪

Battery Voltage (+)‪

6‪

Power Supply‪

Battery Voltage (+)‪

7‪

NC‪

NC‪

8‪

Digital Output‪

Starter Control Signal‪

9‪

Ground‪

Battery Ground (-)‪

10‪

Digital Output‪

Proportional Valve 1 – 4 High Side Supply‪

11‪

Ground‪

Battery Ground (-)‪

12‪

Digital Output‪

Starter High Side Control‪

13‪

Digital Data Link‪

Diagnostic Link K-Line (ISO)‪

14‪

Digital Output‪

Proportional Valve 3 Low Side Control‪

15‪

Ignition Input‪

Ignition‪

16‪

Digital Output‪

Proportional Valve 4 Low Side Control‪

Table 2. 16-Pin Connector to the PLD-MR

Section 14.1.2
VIH Power Wiring

The OEM-supplied VIH power wiring (see Figure "Power Wiring" ) supplies 12 volts to the DDEC-VCU and PLD-MR. The terminals are designed to accept 14 AWG standard wire size.‪

Click to see this graphic in a separate window

Figure 2. Power Wiring


MBE 900/4000 Troubleshooting Guide - 6SE422
Generated on 10-13-2008

Leave a Reply

Your email address will not be published. Required fields are marked *