2004 NISSAN PATROL Electronic Repair Manual

POWER SUPPLY AND GROUND CIRCUIT CHECK FOR TRANSFER UNIT
1. CHECK FUSE
Make sure that the following fuses of the transfer unit are not blown.OK or NG
OK ©GO TO 2.
NG ©If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
Refer to EL-4005 in ªPOWER SUPPLY ROUTINGº.
Unit Terminals
Power source Fuse No.
Connector Terminal (wire color)
Transfer unit M173 31 (R/G)
Battery 56
32 (R/G)
29 (L/OR) Ignition switch ACC or ON 10
2. CHECK POWER SUPPLY CIRCUIT
Check voltage between transfer unit and ground.
SKIA9079E
OK or NG
OK ©GO TO 3.
NG ©Repair or replace harness.
Unit Terminals
OFF ACC ON
(+)
(þ)
Connector Terminal (wire
color)
Transfer unit M173 31 (R/G)
GroundBattery voltage Battery voltage Battery voltage
32 (R/G) Battery voltage Battery voltage Battery voltage
29 (L/OR) 0V Battery voltage Battery voltage
NAVIGATION SYSTEM
Trouble Diagnoses (Cont'd)
EL-4202

3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect transfer unit connector.
3. Check continuity between transfer unit and ground.
SKIA9081E
OK or NG
OK ©INSPECTION END
NG ©Repair or replace harness.
Unit Terminals
Continuity
(+)
(þ)
Connector Terminal (wire color)
Transfer unit M173 25 (B)
Ground Yes
27 (B)
COMMUNICATION LINE CHECK (BETWEEN DISPLAY AND NAVI SWITCH)
1. CHECK POWER SUPPLY AND GROUND CIRCUIT
1. Check system of power supply and ground circuit display. Refer to EL-4199.
OK or NG
OK ©GO TO 2.
NG ©Check the malfunctioning parts.
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect display connector and NAVI switch connector.
3. Check continuity between display harness connector M170 terminal 15 (OR) and NAVI switch harness connector M169
terminal 4 (OR).
SKIA9222E
15 (OR) - 4 (OR) Continuity should exist.
4. Check continuity between display harness connector M170 terminal 15 (OR) and ground. 15 (OR) - Ground Continuity should not exist. OK or NG
OK ©Replace display.
NG ©Repair harness or connector.
NAVIGATION SYSTEM
Trouble Diagnoses (Cont'd)
EL-4203

COMMUNICATION LINE CHECK (BETWEEN NAVI SWITCH AND TRANSFER UNIT)
1. CHECK POWER SUPPLY AND GROUND CIRCUIT
1. Check system of power supply and ground circuit NAVI switch. Refer to EL-4201
OK or NG
OK ©GO TO 2.
NG ©Check the malfunctioning parts.
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI switch connector and transfer unit connector.
3. Check continuity between NAVI switch harness connector M169 terminals 5 (L/W), 6 and transfer unit harness connec-
tor M173 terminals 18 (L/W), 15.
SKIA9223E
5 (L/W) - 18 (L/W) Continuity should exist.
6 - 15 Continuity should exist.
4. Check continuity between NAVI switch harness connector M169 terminals 5 (L/W), 6 and ground. 5 (L/W) , 6 - Ground Continuity should not exist.
OK or NG
OK ©Replace NAVI switch.
NG ©Repair harness or connector.
COMMUNICATION LINE CHECK (BETWEEN NAVI CONTROL UNIT AND TANSFER UNIT)
1. CHECK POWER SUPPLY AND GROUND CIRCUIT
1. Check system of power supply and ground circuit NAVI control unit. Refer to EL-4198.
OK or NG
OK ©GO TO 2.
NG ©Check the malfunctioning parts.
NAVIGATION SYSTEM
Trouble Diagnoses (Cont'd)
EL-4204

2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector and transfer unit connector.
3. Check continuity between NAVI control unit and transfer unit.
SKIA9224E
4. Check continuity between NAVI control unit and ground.OK or NG
OK ©Replace NAVI control unit.
NG ©Repair harness or connector.
Terminals
Continuity
NAVI control unit Transfer unit
Connector Terminal (wire color) Connector Terminal (wire color)
M168 43
M173 9
Ye s
44 (W) 11 (W)
45 (B) 13 (B)
Terminals Continuity
Connector Terminal (wire color) Ð
M168 43
Ground No
44 (W)
45 (B)
COMMUNICATION LINE CHECK (BETWEEN TRANSFER UNIT AND DISPLAY)
1. CHECK POWER SUPPLY AND GROUND CIRCUIT
1. Check system of power supply and ground circuit transfer unit. Refer to EL-4202.
OK or NG
OK ©GO TO 2.
NG ©Check the malfunctioning parts.
NAVIGATION SYSTEM
Trouble Diagnoses (Cont'd)
EL-4205

2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect transfer unit connector and display connector.
3. Check continuity between transfer unit harness connector M173 terminals 19, 20 (B) and display harness connectorM112 terminals 17, 16 (B).
SKIA9225E
19 - 17 Continuity should exist.
20 (B) - 16 (B) Continuity should exist.
4. Check continuity between transfer unit harness connector M173 terminals 19, 20 (B) and ground. 19, 20 (B) - Ground Continuity should not exist. OK or NG
OK ©Replace transfer unit.
NG ©Repair harness or connector.
VEHICLE SPEED SIGNAL CHECK
1. CHECK VEHICLE SPEED OPERATION
Does speedometer is operated normally?
YesorNo
Ye s ©GO TO 2.
No ©Check combination meter.
2. CHECK HARNESS
1. Turn ignition switch OFF.
2. Disconnect NAVI control unit connector and combination meter connector.
3. Check continuity between NAVI control unit harness connector M168 terminal 28 (R/W) and Uni®ed meter control unit
harness connector M143 terminal 64 (R/W).
PKIB0549E
28 (R/W) - 64 (R/W) Continuity should exist.
4. Check continuity between NAVI control unit harness connector M168 terminal 28 (R/W) and ground. 28 (R/W) - Ground Continuity should not exist. OK or NG
OK ©GO TO 3.
NG ©Repair harness or connector.
NAVIGATION SYSTEM
Trouble Diagnoses (Cont'd)
EL-4206

3. CHECK VEHICLE SPEED SIGNAL
1. Connect NAVI control unit and combination meter connector.
2. Start engine and drive vehicle at more than 40 km/h (25 MPH).
3. Check the signal between NAVI control unit harness connector M168 terminal 28 (R/W) and ground with CONSULT-ll oroscilloscope.
SKIA9106E
28 (R/W) - Ground: Refer to EL-4183. OK or NG
OK ©Replace NAVI control unit.
NG ©Replace uni®ed meter control unit.
ILLUMINATION SIGNAL CHECK
1. CHECK TAIL LAMP OPERATION
When lighting switch turned 1st or 2nd position, does tail lamp illuminate?
YesorNo
Ye s ©GO TO 2.
No ©Go to tail lamp trouble diagnosis.
2. CHECK ILLUMINATION SIGNAL
Check voltage between NAVI control unit and ground.
SKIB0315E
OK or NG
OK ©Replace NAVI control unit.
NG ©Repair harness or connector.
Terminals
Lighting switch position Voltage
(+)
(þ)
Connector Terminal (wire color)
M168 25 (L/B) Ground 1st or 2nd position Battery voltage
OFF Approx. 0V
NAVIGATION SYSTEM
Trouble Diagnoses (Cont'd)
EL-4207

IGNITION SIGNAL CHECK
1. CHECK IGNITION SIGNAL
1. Turn ignition switch ON.
2. Check voltage between NAVI control unit harness connector M168 terminal 26 (R/W) and ground.
SKIA9108E
26 (R/W) - Ground: Battery voltageOK or NG
OK ©Replace NAVI control unit.
NG ©Check the following.
+10A fuse [No. 28, located in fuse block (J/B)]
+ Harness for open or short between NAVI control unit and fuse
REVERSE SIGNAL CHECK
1. CHECK REVERSE LAMP
1. Turn ignition switch ON.
Ð With the A/T selector lever in R position, does ªRº in the shift position indicator turned on? (With A/T)
Ð With the shift lever in R position. Are reverse lamps turned on? (With M/T)
YesorNo
Ye s ©GO TO 2.
No ©Check ªBACK-UP LAMPº system.
NAVIGATION SYSTEM
Trouble Diagnoses (Cont'd)
EL-4208

2. CHECK REVERSE SIGNAL
+Shift the A/T selector lever in R position. (With A/T)
+ Shift the shift lever in R position. (With M/T)
Ð Check voltage between NAVI control unit and ground.
SKIA8728E
OK or NG
OK ©Replace NAVI control unit.
NG ©Check the following.
+Harness for open or short between NAVI control unit and park/neutral position switch
(A/T models)
+ Harness for open or short between NAVI control unit and back-up lamp switch (M/T
models)
Terminals
A/T selector lever position Voltage (V)
(+)
(þ)
Connector Terminal (wire color)
M168 27 (Y) Ground R position Battery voltage
Other than R position Approx. 0
COLOR OF RGB IMAGE IS NOT PROPER
1. CHECK COLOR BAR DIAGNOSIS
Check color tone by ªSCREEN ADJUSTMENTº of CONFIRMATION/ADJUSTMENT function. OK or NG
OK ©INSPECTION END
NG ©GO TO 2.
NAVIGATION SYSTEM
Trouble Diagnoses (Cont'd)
EL-4209