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8-68
Published 01-14-2021 Control # 707-01
CARRIER
TMS9000-2 SERVICE MANUAL
Pressure Modulator Valve Repair Test
1.
Take all measurements at ECU harness connector pins
in order to check wire harness and PMV. Probe the
connector carefully so that the terminals are not
damaged.
2.
Pressure modulator resistance should read:
NOTE:
When troubleshooting modulator trouble codes,
check inactive trouble codes and event history for
over-voltage or excessive noise trouble codes. If
one of these is found, troubleshoot these trouble
codes first before the PMV.
ECU Wire Harness Connector: Pressure Modulator
Valves Pins
2nd
Blink
Code
Diagnostic Trouble
Code Description
Repair Information
1
Release Solenoid Shorted to
Ground
Verify no continuity between PMV leads and ground. Verify 4.9 to 5.5 ohms from
REL to CMN and HLD to CMN, and 9.8 to 11 ohms from REL to HLD. Check for
corroded / damaged wiring or connectors between ECU and PMV.
2
Release Solenoid Shorted to
Voltage
Verify no continuity between PMV leads and voltage. Verify 4.9 to 5.5 ohms from
REL to CMN and HLD to CMN, and 9.8 to 11 ohms from REL to HLD. Check for
corroded / damaged wiring or connectors between ECU and PMV.
3
Release Solenoid Open Circuit
Verify 4.9 to 5.5 ohms from REL to CMN and HLD to CMN, and 9.8 to 11 ohms
from REL to HLD. Check for corroded / damaged wiring or connectors between
ECU and PMV.
4
Hold Solenoid Shorted to
Ground
Verify no continuity between PMV leads and ground. Verify 4.9 to 5.5 ohms from
REL to CMN and HLD to CMN, and 9.8 to 11 ohms from REL to HLD. Check for
corroded / damaged wiring or connectors between ECU and PMV.
5
Hold Solenoid Shorted to
Voltage
Verify no continuity between PMV leads and voltage. Verify 4.9 to 5.5 ohms from
REL to CMN and HLD to CMN, and 9.8 to 11 ohms from REL to HLD. Check for
corroded / damaged wiring or connectors between ECU and PMV.
6
Hold Solenoid Open Circuit
Verify 4.9 to 5.5 ohms from REL to CMN and HLD to CMN, and 9.8 to 11 ohms
from REL to HLD. Check for corroded / damaged wiring or connectors between
ECU and PMV.
7
CMN Open Circuit
Verify 4.9 to 5.5 ohms from REL to CMN and HLD to CMN, and 9.8 to 11 ohms
from REL to HLD. Check for corroded / damaged wiring or connectors between
ECU and PMV.
8
Configuration Error
A mis-match exists between the ECU configuration and the modulator
installation and wiring. Verify PMV wiring and installation. Verify ECU
configuration.
Location
Measurement
Release to Common
4.9 to 5.5 Ohms
Hold to Common
4.9 to 5.5 Ohms
Release to Hold
9.8 to 11.0 Ohms
Release, Hold, Common to
Voltage or Ground
Open Circuit (no continuity)
FIGURE 8-70
Fo
r
Reference
Only
Содержание Grove TMS9000-2 Series
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