110
NOTE: If the meter shows no battery voltage, trou-
bleshoot the fuse, switch, or the main wiring harness.
NOTE: If the meter shows battery voltage, the main
wiring harness is good; proceed to test the switch/
component and the connector.
RESISTANCE (Switch Connector)
NOTE: The brake pedal must be depressed for this test.
1. Set the meter selector to the OHMS position.
2. Connect the red tester lead to one terminal; then con-
nect the black tester lead to the other terminal.
3. When the pedal is depressed, the meter must show less
than 1 ohm.
NOTE: If the meter shows more than 1 ohm of resis-
tance, replace the switch.
Engine Coolant
Temperature (ECT)
Sensor
NOTE: Preliminary checks may be performed on this
component using the diagnostic mode on the LCD
gauge (see EFI Diagnostic System in this section).
1. Connect the meter leads (selector in OHMS position)
to the sensor terminals.
2. Suspend the sensor and a thermometer in a container
of cooking oil; then heat the oil.
NOTE: Neither the sensor nor the thermometer
should be allowed to touch the bottom of the con-
tainer or inaccurate readings will occur. Use wire
holders to suspend the sensor and thermometer.
3. On the ECT sensor when the temperature reaches 40°
C (104° F), the meter should read approximately 1136
ohms.
4. On the ECT sensor when the temperature reaches
100° C (212° F), the meter should read approximately
155 ohms.
5. If the readings are not as indicated, the sensor must be
replaced.
6. Install the sensor and tighten securely.
7. Connect the leads.
Fan Motor
NOTE: Preliminary checks may be performed on this
component using the diagnostic mode on the LCD
gauge (see EFI Diagnostic System in this section).
RESISTANCE (Fan Motor Connector)
1. Set the meter selector to the OHMS position.
2. Connect the red tester lead to one motor lead; then
connect the black tester lead to the other motor lead.
PR183A
3. The meter must show less than 1 ohm.
NOTE: If the meter shows more than 1 ohm of resis-
tance, troubleshoot or replace the fan motor.
NOTE: To determine if the fan motor is good, con-
nect the red wire from the fan connector to a 12 volt
battery; then connect the black wire from the fan con-
nector to ground. The fan should operate.
Power Distribution
Module (PDM)
FUSES/RELAYS
NOTE: To access fuses and relays, compress the
locking tabs on either side of the PDM cover and lift off.
The fuses are located in a power distribution module under
the passenger’s seat. If there is any type of electrical sys-
tem failure, always check the fuses first.
The 4-pin relays are identical plug-in type located on the power
distribution module. Relay function can be checked by switch-
ing relay positions. The 4-pin relays are interchangeable.
NOTE: The module and wiring harness are not a service-
able component and must be replaced as an assembly.
1. Remove a fuse from the power distribution module.
! WARNING
Wear insulated gloves and safety glasses. Heated oil
can cause severe burns.
! WARNING
Care should be taken to keep clear of the fan blades.
