ras INFINITI M35 2007 Factory Service Manual

SYSTEM DESCRIPTION
STC-17
[RAS]
C
D
E
F
H
I
J
K
L
MA
B
STC
Revision: 2007 April2007 M35/M45
Fail-Safe FunctionNGS000EA
In the event there is a malfunction with the electrical system, the RAS control is stopped and the fail-safe
mode is activated. At that time, it indicates the malfunction by turning the RAS warning lamp ON and stops the
rear wheel control.

STC-18
[RAS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
TROUBLE DIAGNOSISPFP:00004
How to Perform Trouble DiagnosisNGS000EB
BASIC CONCEPT

The most important point to perform trouble diagnosis is to understand systems (control and mechanism)
in vehicle thoroughly.

It is also important to clarify customer complaints before inspec-
tion.
First of all, reproduce symptom, and understand it fully.
Ask customer about his/her complaints carefully. In some cases,
they will be necessary to check symptom by driving vehicle with
customer.
CAUTION:
Customers are not professionals. Do not assume “maybe
customer means...” or “maybe customer mentioned this
symptom”.

It is essential to check symptoms right from beginning in order to
repair a malfunction completely.
For an intermittent malfunction, it is important to reproduce
symptom based on interview with customer and past examples.
Do not perform inspection on ad hoc basis. Most intermittent
malfunctions are caused by poor contacts. In this case, it will be
effective to shake suspected harness or connector by hand.
When repairs are performed without any symptom check, no
one can judge if malfunction has actually been eliminated.

After diagnosis, make sure to perform “ERASE MEMORY”.
Refer to STC-29, "
How to Erase Self-Diagnostic Results" .

Always read “GI General Information” to confirm general precau-
tions. Refer to GI-4, "
General Precautions" .
EFJ0028D
SEF233G

TROUBLE DIAGNOSIS
STC-19
[RAS]
C
D
E
F
H
I
J
K
L
MA
B
STC
Revision: 2007 April2007 M35/M45
Component Parts LocationNGS000EC
A. RAS warning lamp B. Steering angle sensor C. RAS control unit
D. RAS motor relay E. RAS motor F. Rear wheel steering angle sensor
G. Noise suppressor
SGIA1053J

STC-20
[RAS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
SchematicNGS000ED
TGWT0025E

TROUBLE DIAGNOSIS
STC-21
[RAS]
C
D
E
F
H
I
J
K
L
MA
B
STC
Revision: 2007 April2007 M35/M45
Wiring Diagram — RAS —NGS000EE
TGWT0062E

STC-22
[RAS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
TGWT0063E

TROUBLE DIAGNOSIS
STC-23
[RAS]
C
D
E
F
H
I
J
K
L
MA
B
STC
Revision: 2007 April2007 M35/M45
TGWT0064E

STC-24
[RAS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
TGWT0065E

TROUBLE DIAGNOSIS
STC-25
[RAS]
C
D
E
F
H
I
J
K
L
MA
B
STC
Revision: 2007 April2007 M35/M45
TGWT0066E

STC-26
[RAS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Control Unit Input/Output Signal StandardNGS000EF
CIRCUIT TESTER REFERENCE VALUE
CAUTION:
When checked using a circuit tester for voltage measurement, connector terminals should not be
forcefully extended.
Terminal
Measuring point Measuring condition Standard
+
(wire color)–
1 (L) — CAN-H —
4 (G)
GroundRR MAIN SIG Neutral Approx. 2.4 V
5 (W) RR VCCIgnition switch ON Approx. 5 V
Ignition switch OFF Approx. 0 V
7 (R) RR SUB SIG Neutral Approx. 2.4 V
8 (P) — CAN-L —
15 (B/W)
GroundRR SEN GND — Continuity exit
22 (P/L) STOP/L SWBrake pedal depressed Battery voltage (Approx. 12 V)
Brake pedal not depressed Approx. 0 V
25 (L/W) RLYIgnition switch ON Battery voltage (Approx. 12 V)
Ignition switch OFF Approx. 0 V
26 (G/W) WARNON Approx. 1.4 V or less
OFF Ignition voltage: 2.8 V or more
27 (G/B) IGNIgnition switch ON Battery voltage (Approx. 12 V)
Ignition switch OFF Approx. 0 V
34 (B) GND — Continuity exit
36 (LG) P/S SOLNormal (Vehicle speed)0 km/h (0 MPH) Approx. 4.4 - 6.6 V
100 km/h (62 MPH) Approx. 2.4 - 3.6 V
In fail-safe mode
(Engine speed)0 - 1,500 rpm Approx. 4.4 - 6.6 V
1,500 - 3,000 rpm Approx. 3.5 V
3,000 rpm or more Approx. 2.1 V
37 (L/Y) MOTOR VCCIgnition switch ON Battery voltage (Approx. 12 V)
Ignition switch OFF Approx. 0 V
38 (W) MTR-1 (RH) —
39 (B) MTR-2 (LH) —
40 (B/W) MOTOR GND — Continuity exit