Section 06: ELECTRICAL
PA1553
25
Multi-function lever courtesy blinkers switch
Headlights switch, 2 positions
Multi-function lever headlights beam toggle
switch
Baggage compartment door lock/unlock switch
Tag axle signal
Windshield lower wiper
Multi-function lever windshield wipers intermit.
Multi-function lever windshield wipers speed
1,2
Lower windshield wipers backup switch
Lower windshield washer switch
The following inputs, either certain options or
sensors which are difficult to activate, are not
supported by the switch/sensor test:
o Starter Sensor;
o ABS Warning input;
o Driver's Power Window Switch (up & down);
o Fog Lights Switch;
o Alternator Sensors 1 & 2;
o Retarder Active Signal;
o Radiator fan speed 1 & 2 signals.
When in switch/sensor test mode, the A/C
compressor HI and LO pressure values are
displayed one after the other instead of the
outside temperature in the telltale panel LCD
display. This feature can be used when the
vehicle is traveling to check the A/C compressor
pressure values, but no beep can be heard.
In test mode, with the parking brake applied and
the cabin area (passenger) set point set to a
value higher than 64°F (18°C), the circulator
pump is not set to OFF as it would normally do
when the outside temperature gets above 50°F
(10°C). This feature allows verification of the
pump when inside a garage. This is also useful
when working on the heating system to remove
air pockets trapped in the system.
When performing an A/C cooling test and having
the water pump shut off in switch/sensor test
mode is required, just set the cabin (passenger)
set point temperature to the minimum 64°F
(18°C) to shut off the pump.
4.5 TEST MODE FOR ELECTRIC MOTORS
The test mode allows testing the motors and
electric contactors without the need to have the
engine running. Note that while in test mode, the
engine cannot be started.
Prerequisite conditions for the motor test mode:
A. The battery charger must be connected to a
110-120 volt power supply. If not, the test will
be interrupted when the voltage drops below
24.4 volts,
B. Engine not running,
C. Parking brake applied,
DANGER
Before starting the test sequence, make sure
nobody is working in the evaporator or
condenser compartment.
NOTE
A delay of 15 seconds during which the back-
up alarm will sound is introduced prior the test
start to advise people that may be working on
the vehicle.
To enter this mode:
o Activate the dashboard Telltale Light Test
switch 3 times within 4 seconds;
o Push the ON/OFF button on the driver's side
HVAC control module 5 times (that makes 3
transitions from OFF to ON),
o A beep can be heard indicating the motor test
mode has started.
Using the test mode:
During the entire test, the telltale panel audible
alarm gives a signal each second to remind that
the motor test mode is underway.
4.5.1 Test Sequence – MTH Equipped With
Central HVAC System
o Driver’s & cabin units fresh air damper
opening. [20 seconds delay]
o Go to the condenser compartment and
check the fans. The condenser motors start
at speed 1 for 3 seconds, then after a short
pause, speed 2 activates. [3 seconds delay]
o The cabin unit refrigerant solenoid valve
activates 3 times. [10 seconds delay]
Then 5 beeps can be heard from the back-up
alarm to indicate to go to the engine
compartment.
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