Bendix Commercial Vehicle Systems GEN 5 ABS - Manual (Page 32)

32
FIGURE 32 - PMV Diagnostic Trouble Code Troubleshooting Guide
1st
2nd
1.5 Sec.
Pause
Flashes Location
8 PMV 1 Left Steer
9 PMV 2 Right Steer
10 PMV 3 Left Rear
Blink Code
Sequence
11 PMV4 Right Rear
12 PMV5 Left Rear Rear
13 PMV6 Right Rear Rear
Action
Use multimeter to check that valve resistances are correct.
If valve is OK check harness for short in wiring.
Use multimeter to check that valve resistances are correct.
If valve is OK check harness for short in wiring.
Use multimeter to check that valve resistances are correct.
If valve is OK check harness for open in wiring.
Use multimeter to check that valve resistances are correct.
If valve is OK check harness for open in wiring.
Use multimeter to check that valve resistances are correct.
If valve is OK check harness for short in wiring.
Use multimeter to check that valve resistances are correct.
If valve is OK check harness for short in wiring.
Use multimeter to check that valve resistances are correct.
If valve is OK check harness for open in wiring.
Check the control unit configuration and verify that valves are wired in the proper
location for the configuration (Refer to Schematic).
Flashes Condition
1 There is a short between the
release solenoid and supply voltage.
2 The is a short between the release
solenoid and ground.
3 There is an open circuit at the
release solenoid.
4 There is an open circuit in the
common line to the valve.
5 There is a short between the hold
solenoid and supply voltage.
6 The is a short between the hold
solenoid and ground.
7 There is an open circuit at the hold
solenoid.
8 A valve has been found wired in the
wrong location.
Flashes Location
1st
2nd
1.5 Sec.
Pause
Location
PMV Commons
Action
Unplug ECU and check for voltage on the PMV common pins. If voltage is found,
repair harness. If no problem is found in harness, replace ECU. Note: Before
replacing ECU clear trouble codes and verify that trouble code is still present
(Refer to Schematic).
Unplug ECU and check for short to 12 volts on PMV common pins. If any are
shorted to supply, repair harness. If no short is found in harness, replace ECU.
Note: Before replacing ECU, clear trouble codes and verify that trouble code is
still present (Refer to Schematic).
Unplug ECU and check for short to ground on PMV common pins. If any are
shorted to ground, repair harness. If no short is found in harness, replace ECU.
Note: Before replacing ECU, clear trouble codes and verify that trouble code is
still present (Refer to Schematic).
Condition
Stray voltage has been found on the
common line of one or more
of the valves
A short to supply voltage has been
found on the common line of one or
more of the valves
A short to ground has been found on
the common line of one or more of
the valves
Flashes
9
10
11
Flashes
10 or 11