Mitsubishi Grandis. Manual — part 354
COMBINATION METER
CHASSIS ELECTRICAL
54A-35
TROUBLESHOOTING
TROUBLESHOOTING
M1543000701262
STANDARD FLOW OF DIAGNOSIS
TROUBLESHOOTING
Refer to GROUP 00
− How to Use
Troubleshooting/Inspection Service Points
DIAGNOSIS FUNCTION
M1543007000603
HOW TO READ DIAGNOSIS CODE
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
HOW TO ERASE DIAGNOSIS CODE
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
DIAGNOSIS CODE CHART
M1543007100592
CAUTION
During diagnosis, a diagnosis code associated
with other system may be set when the ignition
switch is turned on with connector(s)
disconnected. On completion, confirm all
systems for diagnosis code(s). If diagnosis
code(s) are set, erase them all.
NOTE:
*
: For M/T-vehicles, diagnosis code No. 12
does not mean that there is a problem.
MB991223
A: MB991219
B: MB991220
C: MB991221
D: MB991222
Harness set
A: Test harness
B: LED harness
C: LED harness
adapter
D: Probe
Making voltage and resistance
measurements during
troubleshooting
A: Connect pin contact pressure
inspection
B: Power circuit inspection
C: Power circuit inspection
D: Commercial tester connection
Tool
Number
Name
Application
MB991223
A
B
C
D
AT
Diagnosis
code No.
Diagnosis item
Reference page
B1200
Malfunction odometer
B1201
Trouble of fuel information
U1073
Bus Off
U1100
Engine-ECU <M/T> or engine-A/T-ECU <A/T> time-out
(related to engine)
U1101
*
Engine-A/T-ECU <A/T> time-out (related to automatic
transmission)
U1102
ABS-ECU or TCL/ASC-ECU time-out
U1109
ETACS-ECU time-out
U1112
SRS-ECU time-out
U1120
Failure information on engine-ECU <M/T> or engine-A/T-ECU
<A/T> (related to engine)
U1206
Flag invalid
COMBINATION METER
CHASSIS ELECTRICAL
54A-36
DIAGNOSTIC TROUBLE CODE
PROCEDURES
Code No.B1200 Malfunction odometer
TROUBLE JUDGMENT
This code is stored when the odometer value cannot
be determined when reading, writing or verifying the
EEPROM storing the odometer value, or the
odometer displays abnormal value.
COMMENTS ON TROUBLE SYMPTOM
The combination meter may be defective.
POSSIBLE CAUSES
Malfunction of the combination meter
DIAGNOSTIC PROCEDURE
Check whether the diagnosis code is reset.
Recheck if the diagnosis code is set.
(1) Erase the diagnosis code.
(2) Turn the ignition switch to "ON" position.
(3) Check if the diagnosis code is set.
Q: Is the check result satisfactory?
YES :
Replace combination meter.
NO :
An intermittent malfunction is suspected.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
−
How to Cope with Intermittent Malfunctions
.
COMBINATION METER
CHASSIS ELECTRICAL
54A-37
Code No.B1201 Trouble of fuel information
COMMENTS ON TROUBLE SYMPTOM
If only the fuel gauge does not operate, the fuel tank
pump and gauge unit assembly, fuel tank gauge unit,
combination meter, wiring harness or connector(s)
may be defective.
POSSIBLE CAUSES
• Damaged harness wires and connectors
• Malfunction of fuel tank gauge unit
• Malfunction of fuel tank pump and gauge unit
assembly
• Malfunction of combination meter
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet
Fuel Gauge Circuit
COMBINATION
METER
CPU
FUEL TANK
GAUGE
UNIT
FUEL TANK
PUMP AND
GAUGE UNIT
ASSEMBLY
F/GA
COMBINATION METER
CHASSIS ELECTRICAL
54A-38
DIAGNOSIS PROCEDURE
Step 1. Connector check: Fuel tank pump and
gauge unit assembly connector D-15.
Q: Is fuel tank pump and gauge unit assembly
connector C-02 in good condition?
YES :
Go to Step 2.
NO :
Repair the connector, and then go to Step
11.
Step 2. Check the fuel gauge circuit.
(1) Disconnect fuel tank pump and gauge unit
assembly connector D-15.
(2) Use special tool MB991219 to connect a test
lamp (12 V - 3.4 W) between the wiring harness
connector terminals 1 and 2.
(3) Turn the Ignition switch to "ON" position.
(4) Check if the test lamp illuminates.
OK: Illuminates
Q: Is the check result satisfactory?
YES :
Go to Step 8.
NO :
Go to Step 3.
Step 3. Resistance measurement at fuel tank
pump and gauge unit assembly connector D-15
to check the earth circuit to the fuel tank pump
and gauge unit assembly.
(1) Disconnect fuel tank pump and gauge unit
assembly connector D-15, and measure at the
wiring harness side.
(2) Turn the Ignition switch to "LOCK" (OFF)
position.
(3) Disconnect the negative battery terminal.
(4) Measure the resistance value between terminal 1
and earth.
OK: 2 ohms or less
Q: Is the check result normal?
YES :
Go to Step 5.
NO :
Go to Step 4.
AC310207
AG
Connector: D-15
D-15 (GR)
Harness side
AC310207
AG
Connector: D-15
D-15 (GR)
Harness side
AC302533
MB991219
AB
Test lamp
(12 V - 3.4 W)
AC310207
AG
Connector: D-15
D-15 (GR)
Harness side
AC310506
Connector D-15
(Harness side)
CM
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