Mitsubishi Outlander XL. Manual — part 991
Inspection Procedure 5: The headlight(s) do not illuminate.
M15410900102USA0000010000
If the discharge type headlights do not illuminate,
fully understand the precautions in "Service
precautions for discharge headlight" before
proceeding with the troubleshooting. Refer to P.
54Ac-12.
Headlights Circuit
HEADLIGHT
(HIGH: RH)
HEADLIGHT
(HIGH: LH)
HEADLIGHT
ASSEMBLY
(RH)
HEADLIGHT
ASSEMBLY
(LH)
HEADLIGHT
RELAY (LOW)
HEADLIGHT
RELAY (HIGH)
RELAY
BOX
LIGHTING
54Ac-37
DIAGNOSIS
Headlights Circuit
HEADLIGHT
(HIGH: RH)
HEADLIGHT
(HIGH: LH)
HEADLIGHT
ASSEMBLY
(LH)
HEADLIGHT
ASSEMBLY
(RH)
DISCHARGE-ECU
DISCHARGE-ECU
HEADLIGHT
RELAY
(LOW)
HEADLIGHT
RELAY
(HIGH)
RELAY
BOX
ZC6041270001
Connector: A-20X
54Ac-38
LIGHTING
DIAGNOSIS
ZC6041270000
Connector: A-28X
ZC6008720007
Connector: A-37, A-38
A-37 (B)
A-38 (B)
ZC6008710010
Connector: A-55, A-56
A-56 (B)
A-55 (B)
TECHNICAL DESCRIPTION (COMMENT)
If any of the headlights do not illuminate, the wiring
harness, connector(s), or the bulb may have a
problem, or the fuse may be burned out.
TROUBLESHOOTING HINTS
⦆
Malfunction of the headlight bulbs
⦆
Malfunction of the headlight assembly
⦆
Damaged harness wires and connectors
DIAGNOSIS
Required Special Tools:
⦆
MB992006: Extra fine probe
⦆
MB991223: Harness set
STEP 1. Check headlight (LOW) connector A-37 <LH>, A-56
<RH>, headlight (HIGH) connector A-38 <LH>, A-55 <RH> for
loose, corroded or damaged terminals, or terminals pushed
back in the connector.
Q:Is headlight (LOW) assembly connector A-37 <LH>, A-56
<RH>, headlight (HIGH) connector A-38 <LH>, A-55 <RH>
in good condition?
YES:
Go to Step 2.
LIGHTING
54Ac-39
DIAGNOSIS
NO:
Repair the defective connector.
STEP 2. Check bulb.
Check the bulb(s) of headlight that does not illuminate.
NOTE:
If discharge-type lower beam headlights do not
illuminate, their bulbs cannot be inspected. In this case,
assume the bulbs to be normal and proceed with steps.
Q:Is the bulb in good condition?
YES:
Go to Step 3.
NO:
Replace the bulb(s) of the light that does not
illuminate.
STEP 3. Check the ground circuit to the headlight assembly
(LOW) or headlight assembly (HIGH). Measure the
resistance at headlight assembly (LOW) connector A-37
<LH>, A-56 <RH> or headlight assembly (HIGH) connector
A-38 <LH>, A-55 <RH>.
(1)
Disconnect the connector, and measure at the wiring harness
side.
ZC5010410048
Harness side: A-37, A-56
ZC5010410050
Harness side: A-37, A-56
ZC5010410049
Harness side: A-38, A-55
(2)
Resistance between the connector of light which does not
illuminate and ground.
⦆
Resistance between the A-37 (LH), A-56 (RH) headlight
assembly connector terminal 8 and ground. <Halogen
headlight (LOW)>
⦆
Resistance between the A-37 (LH), A-56 (RH) headlight
assembly connector terminal 9 and ground. <Discharge
headlight (LOW)>
⦆
Resistance between the A-38 (LH), A-55 (RH) headlight
assembly connector terminal 2 and ground. <HIGH>
OK: The resistance should be 2 Ω or less.
Q:Is the measured resistance 2 Ω or less?
YES:
Go to Step 5.
NO:
Go to Step 4.
STEP 4. Check the wiring harness between headlight
assembly (LOW) connector A-37 <LH>, A-56 <RH> (terminal
54Ac-40
LIGHTING
DIAGNOSIS
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