Page 4377 of 4449
WT-20
TROUBLE DIAGNOSES
Revision: 2004 November 2004 FX35/FX45
Preliminary CheckAES000NZ
BASIC INSPECTION
1. CHECK ALL TIRES PRESSURES
Check all tires pressures.
OK or NG
OK >> GO TO 2.
NG >> Adjust tire pressure to specified value.
2. CHECK WARNING LAMP ACTIVATION
1. Check warning lamp activation.
2. Does warning lamp activate for 1 seconds when ignition switch is turned “ON”.
Does warning lamp active?
YES >> GO TO 3.
NO >> Check fuse and combination meter.
3. CHECK CONNECTOR
1. Disconnect low tire pressure warning control unit harness connectors M74 and R102.
2. Check terminals for damage or loose connection.
3. Reconnect harness connector.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK TRANSMITTER ACTIVATION TOOL
Check transmitter activation tool battery.
OK or NG
OK >> Carry out self-diagnosis.
NG >> Replace transmitter activation tool battery.Tire pressure
: 220 kPa (2.2 kg/cm
2 , 32 psi)
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TROUBLE DIAGNOSES
WT-21
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Malfunction Code/Symptom ChartAES000O0
Code/Symptom Malfunction partReference
page
15
16
17
18Front-left tire pressure drops to 190 kPa (1.9 kg/cm
2 , 27 psi) or less
Front-right tire pressure drops to 190 kPa (1.9 kg/cm2 , 27 psi) or less
Rear-right tire pressure drops to 190 kPa (1.9 kg/cm2 , 27 psi) or less
Rear-left tire pressure drops to 190 kPa (1.9 kg/cm2 , 27 psi) or less—
21
22
23
24Transmitter no data (front - left)
Transmitter no data (front - right)
Transmitter no data (rear - right)
Transmitter no data (rear - left)WT-22
31
32
33
34Transmitter checksum error (front - left)
Transmitter checksum error (front - right)
Transmitter checksum error (rear - right)
Transmitter checksum error (rear - left)WT-22
35
36
37
38Transmitter pressure data error (front - left)
Transmitter pressure data error (front - right)
Transmitter pressure data error (rear - right)
Transmitter pressure data error (rear - left)WT-23
41
42
43
44Transmitter function code error (front - left)
Transmitter function code error (front - right)
Transmitter function code error (rear - right)
Transmitter function code error (rear - left)WT-22
45
46
47
48Transmitter battery voltage low (front - left)
Transmitter battery voltage low (front - right)
Transmitter battery voltage low (rear - right)
Transmitter battery voltage low (rear - left)WT-22
52 Vehicle speed signalWT-24
Warning lamp does not come on when
ignition switch is turned on.Fuse or unified meter and A/C amp.
Low tire pressure warning control unit connector or circuit
Low tire pressure warning control unit WT-25
Warning lamp stays on when ignition
switch is turned on.Fuse or unified meter and A/C amp.
Low tire pressure warning control unit connector or circuit
Low tire pressure warning control unitWT-26
Warning lamp blinks when ignition
switch is turned on.Low tire pressure warning control unit harness connector or circuit
Low tire pressure warning control unit
Transmitter's mode off
ID registration not yetWT-28
Hazard warning lamp blinks when igni-
tion switch is turned on.Low tire pressure warning control unit harness connector or circuit
Low tire pressure warning control unitWT-29
“TIRE PRESSURE” information in dis-
play does not exist.Fuse
Display control unit
Low tire pressure warning control unit WT-30
ID registration cannot be completed.Transmitter
Antenna harness connector or circuit
AntennaWT-30
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WT-22
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMSPFP:00000
Inspection 1: Transmitter or Low Tire Pressure Warning Control UnitAES000O1
MALFUNCTION CODE NO. 21, 22, 23 OR 24
1. CHECK CONTROL UNIT
Drive for several minutes. Check all tires' pressure with CONSULT-II “DATA MONITOR ITEM”.
Are all tires' pressure displayed 0 kPa?
YES >> GO TO 2.
NO >> GO TO 3.
2. CHECK ANTENNA CONNECTOR
Check antenna and feeder connector R102 for damage or loose connections.
OK or NG
OK >> Replace control unit, GO TO 3.
NG >> Repair or replace antenna or feeder connector.
3. ID REGISTRATION
Carry out ID registration of all transmitters.
Is there a tire that cannot register ID?
YES >> Replace transmitter of the tire, then GO TO 5.
NO >> GO TO 4.
4. VEHICLE DRIVING
Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping.
Check all tires' pressure with CONSULT-II “DATA MONITOR ITEM” within 15 minutes after vehicle speed
becomes 17 km/h (11 MPH).
Does
“DATA MONITOR ITEM” displayed tire pressure as normal without any warning lamp?
YES >> INSPECTION END.
NO >> GO TO 5.
5. ID REGISTRATION AND VEHICLE DRIVING
1. Carry out ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for
10 minutes. Then check all tires' pressure with CONSULT-II “DATA MONITOR ITEM” within 5 minutes.
Does
“DATA MONITOR ITEM” displayed tire pressure as normal without any warning lamp?
YES >> GO TO inspection applicable to DTC.
NO >> INSPECTION END.
Inspection 2: Transmitter - 1AES000O2
MALFUNCTION CODE NO. 31, 32, 33, 34, 41, 42, 43, 44, 45, 46, 47 OR 48
1. ID REGISTRATION (CORRECTION OF TRANSMITTER LOCATION)
1. Carry out ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for
10 minutes.
>> GO TO 2.
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TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
WT-23
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Revision: 2004 November 2004 FX35/FX45
2. REPLACE TRANSMITTER
1. Check warning lamp for blink again, replace malfunctioning transmitter.
2. Carry out ID registration of all transmitter.
Can ID registration of all transmitters be completed?
YES >> GO TO 3.
NO >> GO TO Inspection 1.
3. VEHICLE DRIVING
Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for
10 minutes. Then check all tires' pressure with CONSULT-II “DATA MONITOR ITEM” within 5 minutes.
Does
“DATA MONITOR ITEM” displayed tire pressure as normal without any warning lamp?
YES >> INSPECTION END.
NO >> Replace malfunctioning transmitter, and perform “Step 3” again.
Inspection 3: Transmitter - 2AES000O3
MALFUNCTION CODE NO. 35, 36, 37 OR 38
1. CHECK ALL TIRE PRESSURE
Check all tire pressures.
OK >> GO TO 2.
NG >> Adjust tire pressure to specified value.
2. VEHICLE DRIVING
1. Carry out ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping.
Check all tires' pressure with CONSULT-II “DATA MONITOR ITEM” within 15 minutes after vehicle speed
become 17 km/h (11 MPH).
>> Replace transmitter with new one if “DATA MONITOR ITEM” displayed 64 psi or more. Then GO
TO 3.
3. ID REGISTRATION AND VEHICLE DRIVING
Carry out ID registration of all transmitters.
Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for
10 minutes. Then check all tires' pressure with CONSULT-II “DATA MONITOR ITEM” within 5 minutes.
Does
“DATA MONITOR ITEM” displayed tire pressure as normal without any warning lamp?
YES >> INSPECTION END.
NO >> GO TO the inspection applicable to DTC.Tire pressure
: 220 kPa (2.2 kg/m
2 , 32 psi)
Page 4381 of 4449

WT-24
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
Revision: 2004 November 2004 FX35/FX45
Inspection 4: Vehicle Speed SignalAES000O4
MALFUNCTION CODE NO. 52
1. SELF-DIAGNOSIS RESULT CHECK
1. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector.
NOTE:
If “AIR PRESSURE MONITOR” is not indicated, go to GI-40, "
CONSULT-II Data Link Connector (DLC)
Circuit" .
2. Select “AIR PRESSURE MONITOR” on “SELECT SYSTEM” screen.
3. Select “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
4. Check display contents in self-diagnostic results.
Is
“CAN COMM CIRCUIT” displayed in the self-diagnosis display items?
YES >> Malfunction in CAN communication system. GO TO LAN-4, "Precautions When Using CONSULT-
II" .
NO >> GO TO 2.
2. CHECK UNIFIED METER AND A/C AMP. POWER SUPPLY CIRCUIT
1. Disconnect unified meter and A/C amp. connector M56.
2. Check voltage between unified meter and A/C amp. harness connector M56 terminals 21 (R/W), 22 (G/R)
and ground.
OK or NG
OK >> GO TO 3.
NG >> Check unified meter and A/C amp. power supply circuit
for open or short.
3. CHECK UNIFIED METER AND A/C AMP. GROUND CIRCUIT
Check continuity between unified meter and A/C amp. harness connector M56 terminals 29 (B), 30 (B)
and ground.
OK or NG
OK >> Check unified meter and A/C amp. self-diagnostic. Refer
to DI-32, "
SELF-DIAGNOSTIC RESULTS" .
NG >> Repair or replace unified meter and A/C amp. ground circuit.Te r m i n a l s
Vo l ta g e
(Approx.)
(+) (–)
ConnectorTe r m i n a l
(Wire color)
Ground 12 V
M5621 (R/W)
22 (G/R)
SEIA0337E
Te r m i n a l s
Continuity
(+) (–)
ConnectorTe r m i n a l
(Wire color)
Ground Yes
M5629 (B)
30 (B)
SEIA0338E
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TROUBLE DIAGNOSIS FOR SYMPTOMS
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Revision: 2004 November 2004 FX35/FX45
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Inspection 1: Warning Lamp Does Not Come On When Ignition Switch Is Turned
On.
AES000O5
DIAGNOSTIC PROCEDURE
1. SELF-DIAGNOSTIC RESULT CHECK
1. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector.
NOTE:
If “AIR PRESSURE MONITOR” is not indicated, go to GI-40, "
CONSULT-II Data Link Connector (DLC)
Circuit"
2. Select “AIR PRESSURE MONITOR” on “SELECT SYSTEM” screen.
3. Select “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
4. Check display contents in self-diagnostic results.
Is
“CAN COMM CIRCUIT” displayed in the self-diagnosis display items?
YES >> Malfunction in CAN communication system. GO TO LAN-4, "Precautions When Using CONSULT-
II" .
NO >> GO TO 2.
2. CHECK COMBINATION METER
Check combination meter operation.
OK or NG
OK >> GO TO 3.
NG >> Check combination meter. Refer to DI-4, "
System Description" .
3. CHECK WARNING LAMP
Disconnect low tire pressure warning control unit connector.
Does the warning lamp activate?
YES >> Replace low tire pressure warning control unit.
NO >> GO TO 4.
4. CHECK UNIFIED METER AND A/C AMP. POWER SUPPLY CIRCUIT
1. Disconnect unified meter and A/C amp. connector M56.
2. Check voltage between unified meter and A/C amp. harness connector M56 terminals 21 (R/W), 22 (G/R)
and ground.
OK or NG
OK >> GO TO 5.
NG >> Check unified meter and A/C amp. power supply circuit
for open or short.Te r m i n a l s
Vo l ta g e
(Approx.)
(+) (–)
ConnectorTe r m i n a l
(Wire color)
Ground 12 V
M5621 (R/W)
22 (G/R)SEIA0337E
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WT-26
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2004 November 2004 FX35/FX45
5. CHECK UNIFIED METER AND A/C AMP. GROUND CIRCUIT
Check continuity between unified meter and A/C amp. connector M56 terminals 29 (B), 30 (B) and
ground.
OK or NG
OK >> Check unified meter and A/C amp. Refer to DI-28, "Sys-
tem Description" .
NG >> Repair or replace unified meter and A/C amp. ground circuit.
Inspection 2: Warning Lamp Stays On When Ignition Switch Is Turned On.AES000O6
DIAGNOSTIC PROCEDURE
1. CHECK CONNECTOR
1. Disconnect low tire pressure warning control unit connectors M74.
2. Check terminals for damage or loose connections.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace damaged parts.
2. CHECK POWER SUPPLY CIRCUIT 1
Check voltage between low tire pressure warning control unit connector M74 terminal 12 (R/W) and ground.
OK or NG
OK >> GO TO 3.
NG >> Check low tire pressure warning control unit power sup-
ply circuit for open or short.Te r m i n a l s
Continuity
(+) (–)
ConnectorTe r m i n a l
(Wire color)
Ground Yes
M5629 (B)
30 (B)
SEIA0338E
Te r m i n a l s
Vo l ta g e
(Approx.)
(+) (–)
ConnectorTe r m i n a l
(Wire color)
Ground 12 V
M74 12 (R/W)
SEIA0341E
Page 4384 of 4449
TROUBLE DIAGNOSIS FOR SYMPTOMS
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Revision: 2004 November 2004 FX35/FX45
3. CHECK POWER SUPPLY CIRCUIT 2
1. Turn ignition switch ON.
2. Check voltage between low tire pressure warning control unit connector M74 terminals 11 (LG/R), 24 (G/
R) and ground.
OK or NG
OK >> GO TO 4.
NG >> Check low tire pressure warning control unit power sup-
ply circuit for open or short.
4. CHECK GROUND CIRCUIT
Check continuity between low tire pressure warning control unit connector M74 terminal 20(B) and
ground.
OK or NG
OK >> Replace low tire pressure warning control unit.
NG >> Repair or replace low tire pressure warning control unit
ground circuit.Te r m i n a l s
Vo l ta g e
(Approx.)
(+) (–)
ConnectorTe r m i n a l
(Wire color)
Ground 12 V
M7411 ( LG /R )
24 (G/R)
SEIA0342E
Te r m i n a l s
Continuity
(+) (–)
ConnectorTe r m i n a l
(Wire color)
Ground Yes
M74 20 (B)
SEIA0343E