IDI-8
Combination Meter System
INSTRUMENTATION/DRIVER INFO
5. CHECK VDCCM.
6. CHECK ENGINE CONTROL MODULE (ECM)
Step Check Yes No
1CHECK VEHICLE SPEED SIGNAL.
1) Lift up the vehicle and support it with rigid
racks.
2) Drive the vehicle faster than 10 km/h (6
MPH).
WARNING:Be careful not to get caught in the running
wheels.
3) Measure the voltage between combination
meter connector and chassis ground.
Connector & terminal
(i10) No. 27 (+) — Chassis ground (–):
Is the voltage less than 1 V
←→ 5 V or more?
Replace the meter
case assembly.
Go to step 2.
2CHECK HARNESS BETWEEN VDCCM AND
COMBINATION METER.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from VDCCM
and combination meter.
3) Measure the resistance between VDCCM
harness connector and combination meter har-
ness connector.
Connector & terminal
(B310) No. 33 — (i10) No. 27:
Is the resistance less than 10
Ω?
Check the
VDCCM.
Basic Diagnostic
Procedure.>
Repair the wiring
harness.
Step Check Yes No
1CHECK ECM SIGNAL.
1) Start the engine.
2) Measure the voltage between ECM con-
nector and chassis ground.
Connector & terminal
(B136) No. 11 (+) — Chassis ground (– ):
Is the voltage 0 ←→ 14 V or
more?
Go to step 2.Inspect the ECM.
2, Basic Diagnos-
tic Procedure.>
2CHECK HARNESS BETWEEN COMBINA-
TION METER AND ECM.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM and
combination meter.
3) Measure the resistance between ECM har-
ness connector and combination meter har-
ness connector.
Connector & terminal
(B136) No. 11 — (i10) No. 28:
Is the resistance less than 10
Ω?
Replace the meter
case assembly.
Repair the wiring
harness.
IDI-10
Combination Meter System
INSTRUMENTATION/DRIVER INFO
8. CHECK ENGINE COOLANT TEMPERATURE SENSOR.
9. COMMUNICATION ERROR DISPLAY
When the following error code is displayed in the
odo/trip meter, inspect the communication circuit
since the communication malfunction is generated
between each control module.
10.DTC DISPLAY MODE
When DTC display mode is operated, {ECM}, {TCM} is displayed repeatedly in this order by pressing the trip
knob. DTC is displayed in the following table according to type of control module, receiving DTC, DTC de-
tected, No DTC. If CAN communication has some trouble, “-----” is displayed.
Step Check Yes No
1CHECK COMMUNICATION ERROR DIS-
PLAY.
1) Turn the ignition switch to ON.
2) Check that the error code is displayed in
odo/trip meter.
Is the error code “Er xx” dis-
played in odo/trip meter?
Check the commu-
nication circuit.
TION ERROR
DISPLAY,
INSPECTION,
Combination
Meter System.>
Go to step 2.
2CHECK ENGINE COOLANT TEMPERATURE
SENSOR.
Check the engine coolant temperature sensor.
Is the engine coolant tempera-
ture sensor OK?
Replace the meter
case assembly.
Replace the
engine coolant
temperature sen-
sor.
IDI00188
Error code Description
Er IUMalfunction in integrated
module
Er ––
Simultaneous malfunction of
high/low speed CAN com-
munication
Er HCHigh speed CAN communi-
cation malfunction
Er LCMalfunction of low-speed
CAN communication
Er EGEGI Communication mal-
function
Er TCTCM Communication mal-
function
Er AbVDCCM communication
malfunction
Er SP
VDCCM DTC information
and vehicle speed pulse
malfunction
Er SSWheel speed data malfunc-
tion
Er bbVa c u u m p u m p s y s t e m m a l -
function
Control module Condition Display
ECM
Receiving DTC Trip “A” + “P (Blink)”
DTC detected Trip “A” + “P xxxx”
No DTC Trip “A” + “P ----”
TCM
Receiving DTC Trip “B” + “P (Blink)”
DTC detected Trip “B” + “P xxxx”
No DTC Trip “B” + “P ----”
When CAN communication error
is occurred—“-----”
IDI-16
Engine Coolant Temperature Gauge
INSTRUMENTATION/DRIVER INFO
7. Engine Coolant Temperature
Gauge
A: SPECIFICATION
Since the meter case assembly cannot be disas-
sembled, do not remove or inspect the temperature
gauge alone. (Do not remove the cover on the back
side.)
LAN(diag)-3
Check List for Interview
LAN SYSTEM (DIAGNOSTICS)
2. Check List for Interview
A: CHECK
Inspect the following item about the vehicle’s state.
1. DISPLAY OF COMMUNICATION ERROR
2. DISPLAY IN COMBINATION METER
Communication error is
displayed in odo/trip meter.
When and how often are they displayed?
Always
Sometimes
Only once
Which communication error is displayed? (Record them all)
Er IU (Fail in the body integrated unit)
Er HC (Fail of high-speed CAN)
Er LC (Fail of low-speed CAN)
Er –– (Fails of both high-speed and low-speed CAN)
Er EG (Fail of EGI communication data)
Er TC (fail of TCM communication data)
Er Ab (Fail of vehicle dynamics control (VDC)/ABS communication data)
Er bb (Fail of brake vacuum system)
Ignition key position OFF
ACC
ON (Before starting engine)
START
ON (After starting Engine, engine is running)
ON (After starting Engine, engine is at a standstill)
Timing Immediately after turning the ignition to ON.
Immediately after turning the ignition to START.
Display in combination
meter
a) Display of engine coolant temperature gauge OK / NG
b) Display of fuel gauge OK / NG
Display of other indicators c) Malfunction indicator light ON / OFF
d) SPORT indicator light (AT warning light) ON / OFF
e) ABS warning light/Vehicle dynamics control (VDC) warning
light ON / OFF
f) Security indicator light ON / Blink / OFF
g) Seat belt warning light (Driver’s seat) ON / OFF
h) Seat belt warning light (Passenger’s seat) ON / OFF
LAN(diag)-7
Electrical Component Location
LAN SYSTEM (DIAGNOSTICS)
4. Electrical Component Location
A: LOCATION
(1) Body integrated unit (6) Transmission Control Module
(TCM)
(10) Odo/trip meter
(2) Engine Control Module (ECM) (11) Yaw rate sensor
(3) Auto A/C control module (7) Combination meter (12) Center monitor (navigation moni-
tor or MFD)(4) Keyless entry control module
(Antenna)
(8) Steering angle sensor
(9) VDCCM&H/U (In engine compart-
ment)(5) A/C control panel
LAN00181
(8)
(6)
(1)
(11)
(2)
(3)
(12)(7),(10)
(4)
(9)
(5)
LAN(diag)-9
Control Module I/O Signal
LAN SYSTEM (DIAGNOSTICS)
5. Control Module I/O Signal
A: ELECTRICAL SPECIFICATION
DescriptionConnec-
tor No.
Te r m i n a l
No.
Signal (V)
NoteIgnition switch ON
(Engine OFF)
System control power
supplyB281 C2 10 — 13 V Always
Backup power supply B280 B7 10 — 13 V Always
Ignition power supply i84 A1 10 — 13 V Ignition ON
ACC power supply i84 A24 10 — 13 V AC C ON
Ground
i84 A21
0 V AlwaysB281 C9
B281 C8
B280 B22
Key war ning switch B281 C7 10 — 13 V When ignition key inser ted
Stop light switch B281 C23 10 — 13 V When brake pedal depressed
Illumination control switch
(Bright switch)i84 A30 10 — 13 V (at dimmer ON)Cancel the extinction of the clock and
audio illumination
Illumination control switch i84 A30 10 — 13 V (at dimmer ON) Extinct the clock and audio illumination
Illumination volume (Vi1) i84 A10 4.5 — 5.5 V Small light ON
Illumination volume (Vi2) i84 A2 0.5 — 4.5 V —
Illumination volume (Vi3) i84 A25 0 V Ground circuit
Illumination output i84 A5 10 — 13 V Small light ON
Fr o nt fog li g ht in p ut B 28 1 C1 7 1 0 — 1 3 V Fr o nt fo g l i gh t ON
Door switch input Driver’s
seati84 A19 Less than 1 V (10 — 13 V at OFF) Driver’s door open (ON)
Door switch input Passen-
ger’s seati84 A32 Less than 1 V (10 — 13 V at OFF) Passenger’s door open (ON)
Door switch input Rear RH
seati84 A18 Less than 1 V (10 — 13 V at OFF) Rear RH door open (ON)
Door switch input Rear LH
seati84 A31 Less than 1 V (10 — 13 V at OFF) Rear LH door open (ON)
Door switch
Tr u n k / R e a r g a t ei84 A17 Less than 1 V (10 — 13 V at OFF) Trunk/Rear gate open (ON)
Manual switch (LOCK) i84 A15 Less than 1 ΩDoor lock switch ON
CS-00273
71928
61827
51741626152514241312231122
3102921
1820
B281side
72030
619291828
51741627152614132512241123
3102922
1821
B280side
82335
722342162033
51932183117301615291428
41327
312261121025
1924
i84side
LAN(diag)-10
Control Module I/O Signal
LAN SYSTEM (DIAGNOSTICS)
Manual switch (UNLOCK) i84 A29 Less than 1 ΩDoor unlock switch ON
Door lock power supply i84 A34 10 — 13 V Always
All door lock output i84 A7 10 — 13 V Manual lock switch, door key switch ON
Driver’s door UNLOCK
outputi84 A23 10 — 13 V Driver’s seat unlock signal ON
All door UNLOCK output i84 A8 10 — 13 V ALL door unlock signals ON
Rear gate UNLOCK out-
puti84 A22 10 — 13 VWhen rear gate release switch ON with
all seats unlocked
Rear gate release switch B281 C22 0 V Rear gate release switch ON
Key/shift lock power sup-
plyB281 C1 10 — 13 V Always
Shift lock output B280 B6 10 — 13 VIgnition switch ON, shift position “P”
range, foot brake ON (Only AT)
Key locking output B280 B5 10 — 13 VOther than “P” range, ignition switch
ON
Wiper deicer switch i84 A14 0 V Wiper deicer switch ON
Wiper deicer relay output B280 B14 0 V Wiper deicer relay ON
Rear defogger switch i84 A28 0 V Rear defogger switch ON
Rear defogger relay out-
putB281 B16 0 V Rear defogger relay ON
Shift switch (ON) B281 C26 0 V At Manual mode
Shift switch (UP) B281 C15 0 V At Manual mode UP
Shift switch (DOWN) B281 C25 0 V At Manual mode DOWN
Shift button switch B281 C24 0 VWhen shift lever release button is oper-
ated
P range switch B281 C13 0 V Shift range P position
Impact sensor B281 C5 8 V or moreImpact sensor ON (Model with impact
sensor)
Fuel level sensor B281 C19 0 — 102.3 Ω
Resistance differs according to the fuel
level (displays resistance combining
level gauge main and sub)
Ambient temperature sen-
sor
B281 C3 0.5 — 4.5 V SIG
B281 C10 0 V GND
Seat belt switch (driver’s
seat)i84 A4 0 V When driver’s seat belt is worn
Seat belt switch (Passen-
ger’s seat)i84 A13 0 V When passenger’s seat belt is worn
Seat belt warning light
(driver’s seat)i84 A20 0 V When driver’s seat belt is worn
Seat belt warning light
(Passenger’s seat)B280 C27 0 V When passenger’s seat belt is worn
Rear wiper switch (ON) B281 C6 0 V Rear wiper switch ON
Rear wiper switch (INT) B281 C18 0 V Rear wiper switch ON
Rear washer switch B281 C27 0 V Rear washer switch ON
Rear wiper power supply B280 B21 10 — 13 V Ignition switch ON
Rear wiper ON output B280 B1 10 — 13 V Rear wiper switch ON
Rear wiper return B280B8 0 VAt wiper reversingB1 — B8 0 V
Room lamp output B280 B3 0 VWhen LOCK, UNLOCK with keyless
entry
Map lamp output B280D2 0 V When using map lamp
D9 0 V When using map lamp
DescriptionConnec-
tor No.
Te r m i n a l
No.
Signal (V)
NoteIgnition switch ON
(Engine OFF)
LAN(diag)-11
Control Module I/O Signal
LAN SYSTEM (DIAGNOSTICS)
B: WIRING DIAGRAM
Refer to the electrical wiring diagram.
Key r ing illumination out-
putB280 B4 0 VIgnition key removed, driver’s door
open
Tu r n h a z a r d o u t p u t B 2 8 0 B 1 2 0 VWhen operating keyless entry answer
back
Keyless Buzzer Output i84 A6 10 — 13 VWhen operating keyless entry answer
back
Security horn output B280 B11 0 V When operating security horn
Security indicator light i84 A33 0 VAt ignition key removed, immobilizer
operating
TPMS registration check
signal inputB281 C4 0 VWhen inputting registration check sig-
nal
Keyless communication i84 A9 Ser ial communication At keyless entr y signal received
High-speed CAN circuit
(Hi)B280 B20Between B20 — B30
Serial communication
At communicating (sending and receiv-
ing)High-speed CAN circuit
(Lo)B280 B30
Low-speed CAN circuit 1
(Hi)i84 A27Between A25 — A26
Serial communication
At communicating (sending and receiv-
ing)Low-speed CAN circuit 1
(Lo)i84 A26
Low-speed CAN circuit 2
(Hi)B280 B26Between B25 — B27
Serial communication
At communicating (sending and receiv-
ing)
(Model with auto A/C)Low-speed CAN circuit 2
(Lo)B280 B25
Immobilizer antenna B281C20 —
C21Serial communication
Immobilizer communica-
tion (Main)B280
B18
(Back-up
B28)
Serial communication
Subaru Select Monitor
communicationB280 B19 Serial communication
DescriptionConnec-
tor No.
Te r m i n a l
No.
Signal (V)
NoteIgnition switch ON
(Engine OFF)