Voyager V6-3.3L VIN 3 Flex Fuel (2003)
Relay.
SYSTEM REVISIONS
Revisions to the 2003 MTC system include:
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all new version 0802 software.
CAUTION: Manual Temperature Control (MTC) Modules with software versions 0614 and 0700 used in 2001 and 2002 RS/RG vehicles are
NOT compatible with software version 0802 used in 2003 RS/RG vehicles. Do NOT install an MTC Module with software version 0614 or 0700
in a 2003 RS/RG vehicle. Use the DRBIII(R) to verify which version software the MTC Module is using by selecting Body Systems, HVAC, and
then selecting Module Display.
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an all-new System Test called the Actuator Circuit Test. Refer to The Actuator Circuit Test under System Diagnostics for more information.
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an updated HVAC Door Recalibration function that provides actuator span and status data to ease diagnosis of door span faults.
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updated diagnostic procedures using the actuator span status data to diagnose HVAC Door Recalibration Fault messages.
SYSTEM DIAGNOSTICS
Fault detection is through active and stored Diagnostic Trouble Codes (DTCs)
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DTCs are displayed by the DRBIII(R).
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Active DTCs are those which currently exist in the system. The condition causing the fault must be repaired in order to clear this type of DTC.
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Stored DTCs are those which occurred in the system since the A/C-Heater Control Module received the last "clear diagnostic info" message.
The A/C Cooldown Test
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is actuated with the DRBIII(R).
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checks A/C system performance based on evaporator temperature sensor input.
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will not run if ambient temperature is below 12.7°C (55°F).
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will pass if the evaporator temperature drops 6.7°C (20°F) within two minutes of starting the test.
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faults display on the DRBIII(R) as test messages only after running the test.
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faults will not display on the DRBIII(R) as Diagnostic Trouble Codes.
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will cause the PWR and A/C status indicators on the A/C - Heater Control Module to flash alternately while the test is running.
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The A/C status indicator will flash twice per second to indicate that the A/C Cooldown Test needs to be run. The A/C status indicator will stop
flashing twice per second if either the A/C Cooldown Test returns passed, or if any button on the control is pressed, or if the ignition is cycled and
the odometer shows greater than eight miles.
The HVAC Door Recalibration Function
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is actuated with the DRBIII(R).
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After completing HVAC Door Recalibration, the DRBIII(R) will the store the total span and the status of each door actuator. Selecting HVAC
Door Cal Monitor in the System Tests will display this information.
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homes and repositions door actuators.
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monitors for door span faults on the actuator circuits.
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faults display on the DRBIII(R) as test messages only after running the test.
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faults will not display on the DRBIII(R) as Diagnostic Trouble Codes.
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will cause the PWR and RECIRC status indicators on the A/C - Heater Control Module to flash alternately while the test is running.
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The RECIRC status indicator will flash twice per second to indicate that the HVAC Door Recalibration Test needs to be run. The RECIRC status
indicator will stop flashing twice per second if either the HVAC Door Recalibration Test returns passed, or if any button on the control is pressed,
or if the ignition is cycled and the odometer shows greater than eight miles.
The Actuator Circuit Test
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is actuated with the DRBIII(R).
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monitors for shorted actuator circuits.
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allows service to easily diagnose and troubleshoot up to three simultaneous shorts.
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supplements the continuous diagnostics on the actuator drive system.
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faults display on the DRBIII(R) as test messages only after running the test.
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faults will not display on the DRBIII(R) as Diagnostic Trouble Codes.
When Performing the Actuator Circuit Test
CAUTION:
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Shorted rear door driver circuits can cause additional Actuator Circuit Test messages to set for circuits where no condition exists to cause a fault.
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To ensure a proper diagnosis, repair all .E3hort Too Complex messages first, all rear door driver circuit related messages second, all common door
driver circuit related messages third, and all front door driver circuit related messages last.
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The DRBIII(R) can display up to three Actuator Circuit Test messages at a time. After repairing each Actuator Circuit Test message, cycle the
ignition switch, then rerun the Actuator Circuit Test to ensure no new messages exist.
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The Short Too Complex message:
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indicates that a specific determination of which lines are shorted could not be made.
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is closed by more than three drivers being shorted in the same direction. For example, four drivers all shorted to ground, or two or more drivers
shorted with at least one driver shorted to ignition/battery and one driver shorted to ground.
