Page 1113 of 5135
I35392
DTCDEF
I35417ECU±B2
Fuse block:
3
2
145678
910111213141516
DLC3
A04550
05±1092
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3.DTC CHECK (SENSOR CHECK)
(a)After the indicator check is completed, the system enters the DTC check mode automatically.
(b)Read the codes displayed on the panel. Refer to the list of codes on page 05±1094 when reading the codes.
(Trouble codes are outputed at the temperature display.)
(c) If the slower display is desired, press the DEF switch and
change it to the stop operation. Each time the DEF switch
is pressed, the display changes by 1 step.
4. CLEARING DTC
(a) To clear diagnostic trouble code, there are 2 ways. (1) During sensor check, press the ºDEFº switch andºDUALº switch at the same time.
(2) Pull the ECU±B2 fuse in fuse block for 20 seconds or longer to clear the DTC memory.
5. CHECK DLC3
(a) The vehicle engine and ECT ECU uses the ISO 9141±2 (Euro±OBD)/ISO 14230 (M±OBD) communication proto-
col. The terminal arrangement of the DLC3 complies with
ISO 15031±3 and matches the ISO 9141±2/ISO 14230
format.
Terminal No.Connection/Voltage or ResistanceCondition
7Bus + Line/Pulse generationDuring transmission
4Chassis Ground Body Ground/1 or lessAlways
5Signal Ground Body Ground/1 or lessAlways
16Battery Positive Body Ground/9 ± 14 VAlways
Page 1114 of 5135
I36146
Display code R/FDEFLHD:
I36147
Display code RHD:R/FDEF
Blower level Step No.Display
codeConditions
Air flow bent Air inlet damper Compressor
ºCOOLº side (Full closed)Air mix damper
OFF FRESH
FACE 0
1
2
3
6
7
8
9
104
51
16
16
16
16
16
16
16
31 0
1
2
3
6
7
8 4
5
9FACE
FACE
FACE
B/L
FOOT1
FOOT/ DEF.
DEF.FRESH
ON
ON
ON
ON
ON
ON
ONºCOOLº side (Full closed)
ºCOOLº side (Full closed)
ºCOOLº side (Full closed)
ºCOOLº/ ºHOT º (50 % open)
ºHOTº side (Full opened)
FOOT FACE1FRESH
FRESH
RECIRCULATION
RECIRCULATION
RECIRCULATION
RECIRCULATION
RECIRCULATION
RECIRCULATIONHot gas magnetic valve
ºCOOLº/ ºHOT º (50 % open)
ºHOTº side (Full opened)
ºHOTº side (Full opened)ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF OFF
ºHOTº side (Full opened) OFF
± DIAGNOSTICSAIR CONDITIONING SYSTEM
05±1093
AVENSIS REPAIR MANUAL (RM1018E)
6. ACTUATOR CHECK
(a) After entering the DTC check mode (Sensor Check
Mode) press the R/F switch.
(b) Since each damper, motor and relay automatically oper-
ates at 1 second intervals beginning in order from 10 in
the temperature display, check the temperature and air
flow from visual and by hand.
If the slower display is desired, press the DEF switch and
change it to step operation. Each time the DEF switch is
pressed, the display changes by 1 step.
HINT:
Codes are displayed from the smaller to the larger num-
bers in order.
To cancel the check mode, press the OFF switch.
Page 1115 of 5135
050TH±09
I30150
Inspector 's name:
Customer 's NameVIN
Production Date
Licence No.
Odometer Readingkm
Miles Date vehicle
Brought In / /
Date of Problem Occurrence
How Often does Problem Occur?
Weather
Outdoor Temperature / /
Continuous Intermittent ( times a day)
Fine Cloudy Snowy Various / Other
Hot Warm Cool Cold (Approx.F
C)
Symptoms Blower motor does not operate
Blower motor speed does not change
(Always Hi, Always Mid, Always Lo) Air Flow Control
Faulty
Cabin temperature does not go down
Response is slow
Cannot change between FRS and REC
(Always Fresh or always Recirculating)
Will not enter the desired mode Temperature
Control Faulty
Air Inlet Control
Faulty
Vent Control
Faulty
DTC Check1st Time
2nd Time Normal Code Malfunction Code (Code )
Normal Code Malfunction Code (Code )
AIR CONDITIONING SYSTEM Check Sheet
Cabin temperature does not rise
Mode will not change 05±1090
± DIAGNOSTICSAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
CUSTOMER PROBLEM ANALYSIS CHECK
Page 1116 of 5135
050TG±11
05±1088
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
AIR CONDITIONING SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
1VEHICLE BROUGHT TO WORK SHOP
2CUSTOMER PROBLEM ANALYSIS (See page 05±1090)
3CHECK AND CLEAR DTC (See page 05±1091)
4 PROBLEM SYMPTOM CONFIRMATION
SYMPTOM OCCUR (GO TO STEP 6)
SYMPTOM DOES NOT OCCUR (GO TO
STEP 5)
5SYMPTOM SIMULATION (See page 01±22)
6DTC CHECK (See page 05±1091)
MALFUNCTION CODE (GO TO STEP 7)
NORMAL CODE (GO TO STEP 8)
7DTC CHART (See page 05±1094)
GO TO STEP 10
8PROBLEM SYMPTOMS TABLE (See page 05±1100)
9ACTUATOR CHECK (See page 05±1091)
Page 1117 of 5135
±
DIAGNOSTICS AIR CONDITIONING SYSTEM
05±1089
AVENSIS REPAIR MANUAL (RM1018E)
10 CIRCUIT INSPECTION ( See page 05±1102 to 05± 1159 )
11 IDENTIFICATION OF PROBLEM
12 PARTS INSPECTION
13 REPAIR
14 CONFIRMATION TEST
15 END
Page 1118 of 5135
F44863
D5
DLC3Power Steering
ECU Assy
J/C
TS
CG12
4J8D (*1)
J16
J/CA J20D (*2)
J20D
(*2)J9B
(*1)W (*1) W
Center J/B
CB3
CA6E1511
IO IP *1: LHD
*2 RHD TS
W (*2)
W±B (*2)
W±B (*1)
A W±B (*2)
W±B (*1) 05±1086
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
TS TERMINAL CIRCUIT
CIRCUIT DESCRIPTION
After making short circuit between terminal Ts and CG of DLC3 with turning the ignition switch OFF, the mode
will change from the normal mode to test mode when the ignition switch is turned ON. After the ignition switch
is turned ON, there will be DTC output from Tc terminal of DLC3.
WIRING DIAGRAM
050XA±04
Page 1119 of 5135
C52361
Ts
CGDLC3:
±
DIAGNOSTICS ELECTRONIC MOTOR POWER STEERING SYSTEM
05±1087
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1INSPECT DLC3 TERMINAL VOLTAGE(Ts TERMINAL) (Ts ± CG)
(a)Turn the ignition switch ON.
(b)Measure the voltage between terminals Ts and CG of
DLC3.
OK:
Voltage: 5 to 16 V
OKGo to step 3
NG
2CHECK HARNESS AND CONNECTOR(DLC3 ± BODY GROUND)
(a)Check for an open or short circuit in harness and connector between terminal \
CG of DLC3 and body ground (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
3 CHECK HARNESS AND CONNECTOR(POWER STEERING ECU ASSY ± DLC3)
(a) Check for an open or short circuit in harness and connector between terminal \
Ts of DLC3 and power steering ECU assy (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
REPLACE POWER STEERING ECU ASSY(See page 50±20)
Page 1120 of 5135
F44864
D5
DLC3Power Steering
ECU Assy
TC13 W±L W±L
J8 J21 J9 J20
(*1) (*2) (*1) (*2)J/C
E15 TC4 B D D B
CG4 W±B (*2) W±B (*2)
CBCenter J/B
3
CA6
W±B (*1)
IO IPA
A J16
J/C
W±B (*1)
*1: LHD
*2: RHD 05±1084
± DIAGNOSTICSELECTRONIC MOTOR POWER STEERING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
TC TERMINAL CIRCUIT
CIRCUIT DESCRIPTION
When the terminals Tc and CG of DLC3 are connected, the power steering ECU assy displays the DTC.
WIRING DIAGRAM
050X7±04