![NISSAN TIIDA 2008 Service Repair Manual STC-22
< SERVICE INFORMATION >[EPS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
5. Turn ignition switch “OFF”.
6. Check voltage between EPS control unit harness connector (A)
terminals and ground.
7. Connect E NISSAN TIIDA 2008 Service Repair Manual STC-22
< SERVICE INFORMATION >[EPS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
5. Turn ignition switch “OFF”.
6. Check voltage between EPS control unit harness connector (A)
terminals and ground.
7. Connect E](/manual-img/5/57399/w960_57399-2704.png)
STC-22
< SERVICE INFORMATION >[EPS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
5. Turn ignition switch “OFF”.
6. Check voltage between EPS control unit harness connector (A)
terminals and ground.
7. Connect EPS control unit harness connector.
OK or NG
OK >> GO TO 3.
NG >> Check the following. If any items are damaged, repair or replace damaged parts.
• 60 A fusible link (No. m, located in the fuse and fusible link block). Refer to PG-3
.
• 10 A fuse [No. 2, located in the fuse block (J/B)]. Refer to PG-3
.
• Harness for short or open between battery and EPS control unit harness connector M54 termi-
nal 17.
• Harness for short or open between ignition switch and EPS control unit harness connector M53
terminal 10.
3.CHECK EPS CONTROL UNIT GROUND CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect EPS control unit harness connector.
3. Check continuity between EPS control unit harness connector
(A) terminal and ground.
Also check harness for short to power.
4. Connect EPS control unit harness connector.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
4.CHECK EPS CONTROL UNIT
Check EPS control unit input/output signal. Refer to STC-9, "
EPS Control Unit Input/Output Signal Reference
Va l u e" .
OK or NG
OK >> GO TO 5.
NG >> Check EPS control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
5.SYMPTOM CHECK
Check again.
OK or NG
OK >>INSPECTION END
NG >> Replace combination meter. Refer to DI-20, "
Removal and Installation" .
Steering Wheel Turning Force Is Heavy or LightINFOID:0000000001703894
SYMPTOM:
Steering wheel turning force is heavy or light, while driving.
DIAGNOSTIC PROCEDURE
1.CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to STC-11, "
CONSULT-III Function (EPS)" .
Connector Terminal Voltage
M53 10 – Ground Approx. 0 V
M54 17 – Ground Battery voltage
SGIA1627E
Connector Terminal Continuity
M54 18 YES
SGIA1628E

WT-20
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS FOR SYMPTOMS
TROUBLE DIAGNOSIS FOR SYMPTOMS
Low Tire Pressure Warning Lamp Does Not Come On When Ignition Switch Is Turned
On
INFOID:0000000001703767
DIAGNOSTIC PROCEDURE
1.SELF-DIAGNOSTIC RESULT CHECK
Using CONSULT-III, 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-12, "CAN Diagnosis with CONSULT-
III".
NO >> GO TO 2.
2.CHECK COMBINATION METER
Check combination meter operation. Refer to DI-11, "
Self-Diagnosis Mode of Combination Meter".
Inspection results OK?
OK >> GO TO 3.
NG >> Replace combination meter. Refer to IP-11, "
Removal and Installation".
3.CHECK LOW TIRE PRESSURE WARNING LAMP
Disconnect BCM harness connector.
Does the low tire pressure warning lamp activate?
YES >> Replace BCM. Refer to BCS-18, "Removal and Installation of BCM".
NO >> Check combination meter operation. Refer to DI-11, "
Self-Diagnosis Mode of Combination
Meter".
Low Tire Pressure Warning Lamp Stays On When Ignition Switch Is Turned On
INFOID:0000000001703768
DIAGNOSTIC PROCEDURE
1.CHECK BCM CONNECTORS
1. Turn ignition switch OFF.
2. Disconnect BCM harness connectors M18 and M20.
3. Check terminals for damage or loose connections.
Inspection results OK?
OK >> GO TO 2.
NG >> Repair or replace damaged parts.
2.CHECK BCM POWER SUPPLY CIRCUIT (BAT)
Check voltage between BCM harness connector M20 terminal 70 and ground.
1.
OK or NG
OK >> GO TO 3.
NG >> Check BCM power supply circuit for open or short.
3.CHECK BCM POWER SUPPLY CIRCUIT (IGN)
1. Turn ignition switch ON.
2. Check voltage between BCM harness connector M18 terminal 38 and ground.Terminals Voltage
(Approx.)
(+) (–)
Connector Terminal
GroundBattery
voltage
M20 70
WEIA0188E

TROUBLE DIAGNOSIS FOR SYMPTOMS
WT-21
< SERVICE INFORMATION >
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OK or NG
OK >> GO TO 4.
NG >> Check BCM power supply circuit for open or short.
4.CHECK BCM GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between BCM harness connector M20 terminal 67 and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-18, "Removal and Installa-
tion of BCM".
NG >> Repair BCM ground circuit.
Low Tire Pressure Warning Lamp Flashes When Ignition Switch Is Turned On
INFOID:0000000001703769
NOTE:
If low tire pressure warning lamp flashes as shown, the system is normal.
Flash Mode A
• This mode shows transmitter status is OFF-mode.
Carry out transmitter wake up operation. Refer to WT-12, "
Trans-
mitter Wake Up Operation".
DIAGNOSTIC PROCEDURE
1.CHECK BCM CONNECTORS
1. Turn ignition switch OFF.
2. Disconnect BCM harness connectors M18 and M20.
3. Check terminals for damage or loose connections.
Inspection results OK?
OK >> GO TO 2.
NG >> Repair or replace damaged parts.
2.CHECK TIRE PRESSURE WARNING CHECK CONNECTOR CIRCUIT
Check continuity between BCM harness connector M18 terminal 15 and check connector M39 terminal 1. Terminals Voltage
(Approx.)
(+) (–)
Connector Terminal
GroundBattery
voltage
M18 38
WEIA0038E
Terminals Continuity
(+) (–)
Connector Terminal
Ground Yes
M20 67
WEIA0189E
SEIA0347E

FRONT WIPER AND WASHER SYSTEM
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FRONT WIPER AND WASHER SYSTEM
Component Parts and Harness Connector LocationINFOID:0000000001704535
System DescriptionINFOID:0000000001704536
• Front wiper relays (front wiper relay, front wiper high relay) are located in the IPDM E/R (intelligent power
distribution module engine room).
• Wiper switch (combination switch) is composed of a combination of 5 output terminals and 5 input terminals.
Terminal combination status is read by BCM (body control module) when switch is turned ON.
• BCM controls front wiper LO, HI, and INT (intermittent) operation.
• IPDM E/R operates wiper motor according to CAN communication signals from BCM.
OUTLINE
Power is supplied at all times• to ignition relay, located in IPDM E/R, from battery directly,
• through 40A fusible link (letter g, located in fuse and fusible link box)
• to BCM terminal 70,
• through 30A fuse (No. 39, located in IPDM E/R)
• to front wiper relay located in IPDM E/R
• through 15A fuse (No. 52, located in IPDM E/R), and
• through 20A fuse (No. 53, located in IPDM E/R)
• to CPU located in IPDM E/R.
When ignition switch is in ON or START position, power is supplied • through ignition relay (located in IPDM E/R)
• to front wiper relay (located in IPDM E/R), and
1. IPDM E/R E45, E46 and E48 2. BCM M18 and M20 (view with glove
box removed)3. Front wiper motor E1 (view with cowl
top cover removed)
4. Front and rear washer motor E2
(view with front fender protector LH
removed)5. Combination switch (wiper switch)
M28
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FRONT WIPER AND WASHER SYSTEM
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2. Check continuity between IPDM E/R connector (A) and front
wiper motor connector (B).
3. Check continuity between IPDM E/R connector (A) and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness.
6.CHECK IPDM E/R
With CONSULT-lIl
1. Connect IPDM E/R.
2. Turn ignition switch ON.
3. Select “IPDM E/R” by CONSULT-III, and select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
4. Select “FRONT WIPER” on “SELECT TEST ITEM” screen.
5. Touch “LO” or “HI” screen.
6. Check voltage between IPDM E/R connector and ground while
front wiper (HI, LO) is operating.
Without CONSULT-llI1. Connect IPDM E/R.
2. Turn ignition switch ON.
3. Start auto active test. Refer to PG-19, "
Auto Active Test" .
4. Check voltage between IPDM E/R connector and ground while front wiper (HI, LO) is operating.
OK or NG
AB
Continuity
Connector Terminal Connector Terminal
E4532
E15
Ye s
33 3
A
GroundContinuity
Connector Terminal
E4532
No
33
WKIA5489E
Te r m i n a l
ConditionVo l ta g e
(Approx.) (+)
(-)
IPDM E/R
connectorTe r m i n a l
E4533
GroundStopped 0V
LO operation Battery voltage
32Stopped 0V
HI operation Battery voltage
Te r m i n a l
ConditionVol tag e
(Approx.) (+)
(-)
IPDM E/R
connectorTe r m i n a l
E4533
GroundStopped 0V
LO operation Battery voltage
23Stopped 0V
HI operation Battery voltage
ALLIA0368ZZ

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< SERVICE INFORMATION >
FRONT WIPER AND WASHER SYSTEM
OK >> Replace front wiper motor. Refer to WW-19, "Removal and Installation of Front Wiper Drive
Assembly" .
NG >> Replace IPDM E/R. Refer to PG-26, "
Removal and Installation of IPDM E/R" .
Front Wiper Does Not Return to Stop Position (After Front Wiper Operate for 10 Sec-
onds, They Stop for 20 Seconds, and After Repeating the Operation Five Times, They
Become Inoperative)
INFOID:0000000001704547
CAUTION:
• When auto-stop signal has not varied for 10 seconds or longer while IPDM E/R is operating front wip-
ers, IPDM E/R considers that front wipers are locked, and stops wiper output. That causes this symp-
tom.
• This status can be checked by “DATA MONITOR” of “IPDM E/R” on which “WIPER PROT” item
shows “BLOCK”.
1.CHECK FRONT WIPER STOP SIGNAL
With CONSULT-lIl
Select “IPDM E/R” on CONSULT-III. With “DATA MONITOR”, make sure that “WIP AUTO STOP” turns “ACT
P” - “STOP P” linked with wiper operation.
Without CONSULT-llI
GO TO 2.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-26, "Removal and Installation of IPDM E/R" .
NG >> GO TO 2.
2.CHECK IPDM E/R
1. Turn ignition switch ON.
2. Check voltage between IPDM E/R connector and ground while
front wiper motor is stopped and while it is operating.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-26, "Removal and Installation of IPDM E/R" .
NG >> GO TO 3.
3.CHECK FRONT WIPER AUTO STOP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and wiper motor.
3. Check continuity between IPDM E/R connector (A) and front
wiper motor connector (B).
4. Check continuity between IPDM E/R harness connector (A) and
ground.
Te r m i n a l
ConditionVo l ta g e
(Approx.) (+)
(-)
IPDM E/R
connectorTe r m i n a l
E46 38 GroundWiper stopped 0V
Wiper operating Battery voltage
WKIA5491E
AB
Continuity
Connector Terminal Connector Terminal
E46 38 E1 4 Yes
A
GroundContinuity
Connector Terminal
E46 38 No
WKIA5492E

FRONT WIPER AND WASHER SYSTEM
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OK or NG
OK >> Replace front wiper motor. Refer to WW-19, "Removal and Installation of Front Wiper Drive
Assembly" .
NG >> Repair or replace harness.
Only Front Wiper Low Does Not OperateINFOID:0000000001704548
1.ACTIVE TEST
With CONSULT-lIl
1. Select “IPDM E/R” on CONSULT-III, and select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
2. Select “FRONT WIPER” on “SELECT TEST ITEM” screen.
3. Touch “LO” screen.
Without CONSULT-lIl
Start auto active test. Refer to PG-19, "
Auto Active Test" .
Does front wiper operate normally?
YES >> Refer to LT-63, "Combination Switch Inspection" .
NO >> GO TO 2.
2.CHECK FRONT WIPER MOTOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and front wiper motor.
3. Check continuity between IPDM E/R connector (A) and front
wiper motor connector (B).
4. Check continuity between IPDM E/R harness connector (A) and
ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK IPDM E/R
With CONSULT-lIl
1. Connect IPDM E/R.
2. Turn ignition ON.
3. Select “IPDM E/R” on CONSULT-III, and select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
4. Select “FRONT WIPER” on “SELECT TEST ITEM” screen.
5. Touch “LO” screen.
6. Check voltage between IPDM E/R connector and ground while
front wiper LO is operating.
Without CONSULT-lIl
AB
Continuity
Connector Terminal Connector Terminal
E45 33 E1 3 Yes
A
GroundContinuity
Connector Terminal
E45 33 No
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Te r m i n a l
Continuity (+)
(-)
IPDM E/R
connectorTe r m i n a l
E45 33 Ground Battery voltage
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< SERVICE INFORMATION >
FRONT WIPER AND WASHER SYSTEM
1. Connect IPDM E/R.
2. Turn ignition ON.
3. Start auto active test. Refer to PG-19, "
Auto Active Test" .
4. Check voltage between IPDM E/R connector and ground while front wiper LO is operating.
OK or NG
OK >> Replace front wiper motor. Refer to WW-19, "Removal and Installation of Front Wiper Drive
Assembly" .
NG >> Replace IPDM E/R. Refer to PG-26, "
Removal and Installation of IPDM E/R" .
Only Front Wiper High Does Not OperateINFOID:0000000001704549
1.ACTIVE TEST
With CONSULT-Ill
1. Select “IPDM E/R” on CONSULT-III, and select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
2. Select “FRONT WIPER” on “SELECT TEST ITEM” screen.
3. Touch “HI” screen.
Without CONSULT-lIl
Start auto active test. Refer to PG-19, "
Auto Active Test" .
Does front wiper operate normally?
YES >> Refer to LT-63, "Combination Switch Inspection" .
NO >> GO TO 2.
2.CHECK FRONT WIPER MOTOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector E45 and front wiper motor connector E1.
3. Check continuity between IPDM E/R connector (A) E45 terminal
32 and front wiper motor connector (B) E1 terminal 1.
4. Check continuity between IPDM E/R harness connector (A) E45
terminal 32 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK IPDM E/R
With CONSULT-lIl
1. Connect IPDM E/R connector E45.
2. Turn ignition switch ON.
3. Select “IPDM E/R” on CONSULT-III, and select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
4. Select “FRONT WIPER” on “SELECT TEST ITEM” screen.
Te r m i n a l
Continuity (+)
(-)
IPDM E/R
connectorTe r m i n a l
E45 33 Ground Battery voltage
AB
Continuity
Connector Terminal Connector Terminal
E45 32 E1 5 Yes
A
GroundContinuity
Connector Terminal
E45 32 No
WKIA5498E