2005 MITSUBISHI 380 Relay box

ENGINE COOLING DIAGNOSIS
ENGINE COOLING14-8
STEP 5. Check the fan control relay connector A-10X.
Q: Is the connector in good condition?
YES : Go to Step 6.
NO : Repair the connector or replace the relay box. Then
go to Step 24.
STEP 6. Check the harness wire between fusible link No.2
and fan control relay connector A-10X terminal 4.
Q: Is the harness wire in good condition?
YES : An intermittent malfunction is suspected (Refer to
GROUP 00 - How to use troubleshooting 00-7).
NO : Repair the damaged harness wire. Then go to Step
24.
STEP 7. Check the fan control relay.
Refer to 14-31.
Q: Is the fan control relay in good condition?
YES : Go to Step 8.
NO : Replace the fan control relay. Then go to Step 24.

ENGINE COOLING DIAGNOSIS
ENGINE COOLING14-9
STEP 8. Check the fan control relay connector A-10X.
Q: Is the connector in good condition?
YES : Go to Step 9.
NO : Repair the connector or replace the relay box. Then
go to Step 24.
STEP 9. Check the harness wire between fan control relay
connector A-10X terminal 2 and fan controller connector
A-24 terminal 3.
Q: Is the harness wire in good condition?
YES : Go to Step 10.
NO : Repair the damaged harness wire. Then go to Step
24.

ENGINE COOLING DIAGNOSIS
ENGINE COOLING14-10
STEP 10. Measure the terminal voltage at fan control relay
connector A-10X.
(1) Disconnect fan control relay connector A-10X (remove the
fan control relay) and measure relay box side connector.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between fan control relay connector
A-10X terminal 3 and body earth.
The voltage should measure system voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
(5) Connect fan control relay connector A-10X (install the fan
control relay).
Q: Is the measured voltage system voltage?
YES : Go to Step 13.
NO : Go to Step 11.

ENGINE COOLING DIAGNOSIS
ENGINE COOLING14-13
STEP 13. Check the continuity between fan control relay
connector A-10X and body earth.
(1) Disconnect fan control relay connector A-10X (remove the
fan control relay) and measure relay box side connector.
(2) Measure the resistance between fan control relay connector
A-10X terminal 1 and body earth.
Continuity exists.
(3) Connect fan control relay connector A-10X (install the fan
control relay).
Q: Does the continuity exists?
YES : An intermittent malfunction is suspected (Refer to
00-7).
NO : Go to Step 14.
STEP 14. Check the fan control relay connector A-10X.
Q: Is the connector in good condition?
YES : Go to Step 15.
NO : Repair the connector or replace the relay box. Then
go to Step 24.

ENGINE COOLING DIAGNOSIS
ENGINE COOLING14-21
STEP 2. Check the fan control relay connector A-10X.
Q: Is the connector in good condition?
YES : Go to Step 3.
NO : Repair the connector or replace the relay box. Then
go to Step 8.
STEP 3. Check the harness wire between fan control relay
connector A-10X terminal 2 and fan controller connector
A-24 terminal 3.
Q: Is the harness wire in good condition?
YES : Go to Step 4.
NO : Repair the damaged harness wire. Then go to Step 8.

AUTO-CRUISE CONTROL
ENGINE AND EMISSION CONTROL17-41
STEP 8. Check the harness wire between stoplamp switch
connector C-30 terminal 2 and fuse number 11 at the relay
box at engine compartment for damage.
Q: Is the harness wire in good condition?
YES : Go to Step 9.
NO : Repair the damaged harness wire. Then go to Step
22.
STEP 9. Check the fuse number 11 at the relay box at
engine compartment.
Q: Is the fuse in good condition?
YES : Go to Step 10.
NO : Check the stoplamp system harness and replace the
fuse. Then go to Step 22.