Mitsubishi Outlander GS45X. Manual - part 10

COMBINATION METER

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CHASSIS ELECTRICAL

54A-37

DTC B1201: Abnormal fuel information

Fuel Gauge Unit Circuit

INTERFACE
CIRCUIT

COMBINATION
METER

CPU

<FWD>

<AWD>

FUEL 
LEVEL 
SENSOR 
(SUB)

FUEL 
PUMP 
MODULE

FUEL LEVEL
SENSOR 
(MAIN)

COMBINATION METER

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CHASSIS ELECTRICAL

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CAUTION

Whenever the ECU is replaced, ensure that the communication circuit is normal.

.

TROUBLE JUDGMENT

With the ignition switch at the ON position and the 
system voltage at 10 

−16 volts (data from 

ETACS-ECU), if the combination meter detects the 
abnormal resistance of fuel level sensor circuit for 64 
seconds continuously, DTC B1201 is stored.

.

TROUBLESHOOTING HINTS

• The fuel pump module [fuel level sensor (main)] 

may be defective. <FWD, AWD>

• The fuel level sensor (sub) may be defective. 

<AWD>

• The combination meter may be defective.

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB992006: Extra Fine Probe

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicles Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with 

CAN communication system)

STEP 1. Check the malfunctioning vehicle.
Q: Is the malfunctioning vehicle a FWD?

YES <FWD> : Go to Step 2.
NO <AWD> : Go to Step 8.

AC702815AB

Connectors: C-03, C-31

C-03

C-31

AC702816 AC

Connectors: D-05, D-22

D-05

D-22

AC702817AB

Connector: D-20

D-20 (GR)

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STEP 2. Check fuel pump module connector D-20 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Is fuel pump module connector D-20 in good condition?

YES : Go to Step 3.
NO :  Repair the connector.

STEP 3. Check the fuel level sensor (main).
Check to see if the fuel level sensor (main) is normal. Refer to 

P.54A-107

.

Q: Is the check result normal?

YES : Go to Step 4.
NO :  Replace the fuel level sensor (main).

STEP 4. Measure the resistance at fuel pump module 
connector D-20.
(1) Disconnect pump module connector D-20, and measure at 

the wiring harness side.

(2) Measure the resistance value between terminal 1 and 

ground.

• The measured value should be 2 ohm or less.

Q: Does the measured resistance value correspond with 

this range?
YES : Go to Step 6.
NO :  Go to Step 5.

STEP 5. Check the wiring harness between fuel pump 
module connector D-20 (terminal 1) and ground.

• Check the ground wire for open circuit.

Q: Is the wiring harness between fuel pump module 

connector D-20 (terminal 1) and ground in good 
condition?
YES : There is no action to be taken.
NO :  Repair the wiring harness.

STEP 6. Check combination meter connector C-03 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Is combination meter connector C-03 in good 

condition?
YES : Go to Step 7.
NO :  Repair the connector.

AC702818AB

Harness side: D-20

COMBINATION METER

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STEP 7. Check the wiring harness between fuel pump 
module connector D-20 (terminal 2) and combination 
meter connector C-03 (terminal 17 or 18).

• Check the communication lines for open circuit and short 

circuit.

NOTE: Also check intermediate connectors C-31 and D-05. If 
intermediate connectors C-31 and D-05 are damaged, repair or 
replace the connector as described in GROUP 00E, Harness 
Connector Inspection 

P.00E-2

.

Q: Are the wiring harness between fuel pump module 

connector D-20 (terminal 2) and combination meter 
connector C-03 (terminal 17 or 18) in good condition?
YES : Go to Step 14.
NO :  Repair the wiring harness. The fuel gauge should 

work normally.

STEP 8. Check fuel pump module connector D-20 and fuel 
level sensor (sub) connector D-22 <AWD> for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is fuel pump module connector D-20 and fuel level 

sensor (sub) connector D-22 <AWD> in good condition?
YES : Go to Step 9.
NO :  Repair the connector.

STEP 9. Check the fuel level sensor (main) and (sub)
Check to see if the fuel level sensor (main) and (sub) is normal. 
Refer to 

P.54A-107

.

Q: Is the check result normal?

YES : Go to Step 10.
NO :  Replace the fuel level sensor (main) or (sub).

STEP 10. Measure the resistance at fuel pump module 
connector D-20.
(1) Disconnect fuel pump module connector D-20, and 

measure at the wiring harness side.

(2) Measure the resistance value between terminal 1 and 

ground.

• The measured value should be 2 ohm or less.

Q: Does the measured resistance value correspond with 

this range?
YES : Go to Step 12.
NO :  Go to Step 11.

AC702818AB

Harness side: D-20