p1805 INFINITI FX35 2005 Service Manual

EC-6Revision: 2005 July 2005 FX
DTC Confirmation Procedure ..............................
.516
Wiring Diagram .................................................... .518
Diagnostic Procedure .......................................... .521
Removal and Installation ..................................... .525
DTC P1276, P1286 A/F SENSOR 1 ....................... .526
Component Description ....................................... .526
CONSULT-II Reference Value in Data Monitor Mode .526
On Board Diagnosis Logic ................................... .526
DTC Confirmation Procedure .............................. .526
Overall Function Check ....................................... .527
Wiring Diagram .................................................... .529
Diagnostic Procedure .......................................... .532
Removal and Installation ..................................... .535
DTC P1278, P1288 A/F SENSOR 1 ....................... .536
Component Description ....................................... .536
CONSULT-II Reference Value in Data Monitor Mode .536
On Board Diagnosis Logic ................................... .536
DTC Confirmation Procedure .............................. .537
Wiring Diagram .................................................... .539
Diagnostic Procedure .......................................... .542
Removal and Installation ..................................... .547
DTC P1279, P1289 A/F SENSOR 1 ....................... .548
Component Description ....................................... .548
CONSULT-II Reference Value in Data Monitor Mode .548
On Board Diagnosis Logic ................................... .548
DTC Confirmation Procedure .............................. .549
Wiring Diagram .................................................... .551
Diagnostic Procedure .......................................... .554
Removal and Installation ..................................... .559
DTC P1444 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE .............................. .560
Description ........................................................... .560
CONSULT-II Reference Value in Data Monitor Mode .560
On Board Diagnosis Logic ................................... .561
DTC Confirmation Procedure .............................. .561
Wiring Diagram .................................................... .562
Diagnostic Procedure .......................................... .564
Component Inspection ......................................... .567
Removal and Installation ..................................... .567
DTC P1446 EVAP CANISTER VENT CONTROL
VALVE .................................................................... .568
Component Description ....................................... .568
CONSULT-II Reference Value in Data Monitor Mode .568
On Board Diagnosis Logic ................................... .568
DTC Confirmation Procedure .............................. .569
Wiring Diagram .................................................... .570
Diagnostic Procedure .......................................... .571
Component Inspection ......................................... .572
DTC P1564 ICC STEERING SWITCH ................... .574
Component Description ....................................... .574
CONSULT-II Reference Value in Data Monitor Mode .574
On Board Diagnosis Logic ................................... .574
DTC Confirmation Procedure .............................. .574 Wiring Diagram ....................................................
.576
Diagnostic Procedure ........................................... .577
Component Inspection ......................................... .580
DTC P1564 ASCD STEERING SWITCH ............... .581
Component Description ....................................... .581
CONSULT-II Reference Value in Data Monitor Mode .581
On Board Diagnosis Logic ................................... .581
DTC Confirmation Procedure ............................... .582
Wiring Diagram .................................................... .583
Diagnostic Procedure ........................................... .584
Component Inspection ......................................... .586
DTC P1568 ICC FUNCTION .................................. .587
On Board Diagnosis Logic ................................... .587
DTC Confirmation Procedure ............................... .587
Diagnostic Procedure ........................................... .587
DTC P1572 ICC BRAKE SWITCH ......................... .588
Component Description ....................................... .588
CONSULT-II Reference Value in Data Monitor Mode .588
On Board Diagnosis Logic ................................... .588
DTC Confirmation Procedure ............................... .589
Wiring Diagram .................................................... .590
Diagnostic Procedure ........................................... .591
Component Inspection ......................................... .596
DTC P1572 ASCD BRAKE SWITCH ..................... .597
Component Description ....................................... .597
CONSULT-II Reference Value in Data Monitor Mode .597
On Board Diagnosis Logic ................................... .597
DTC Confirmation Procedure ............................... .598
Wiring Diagram .................................................... .599
Diagnostic Procedure ........................................... .600
Component Inspection ......................................... .604
DTC P1574 ICC VEHICLE SPEED SENSOR ........ .605
Component Description ....................................... .605
On Board Diagnosis Logic ................................... .605
DTC Confirmation Procedure ............................... .605
Diagnostic Procedure ........................................... .606
DTC P1574 ASCD VEHICLE SPEED SENSOR .... .607
Component Description ....................................... .607
On Board Diagnosis Logic ................................... .607
DTC Confirmation Procedure ............................... .607
Diagnostic Procedure ........................................... .608
DTC P1706 PNP SWITCH ...................................... .609
Component Description ....................................... .609
CONSULT-II Reference Value in Data Monitor Mode .609
On Board Diagnosis Logic ................................... .609
DTC Confirmation Procedure ............................... .609
Overall Function Check ........................................ .609
Wiring Diagram .................................................... .611
Diagnostic Procedure ........................................... .612
DTC P1805 BRAKE SWITCH ................................ .614
Description ........................................................... .614
CONSULT-II Reference Value in Data Monitor Mode .614
On Board Diagnosis Logic ................................... .614
DTC Confirmation Procedure ............................... .614

EC-13
C
D E
F
G H
I
J
K L
M
EC A
Revision: 2005 July 2005 FX
DTC P1444 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE ............................. 1233
Description .......................................................... 1233
CONSULT-II Reference Value in Data Monitor Mode 1233
On Board Diagnosis Logic .................................. 1234
DTC Confirmation Procedure .............................. 1234
Wiring Diagram ................................................... 1235
Diagnostic Procedure .......................................... 1237
Component Inspection ........................................ 1240
Removal and Installation ..................................... 1240
DTC P1446 EVAP CANISTER VENT CONTROL
VALVE .................................................................... 1241
Component Description ....................................... 1241
CONSULT-II Reference Value in Data Monitor Mode 1241
On Board Diagnosis Logic .................................. 1241
DTC Confirmation Procedure .............................. 1242
Wiring Diagram ................................................... 1243
Diagnostic Procedure .......................................... 1244
Component Inspection ........................................ 1245
DTC P1564 ICC STEERING SWITCH ................... 1247
Component Description ....................................... 1247
CONSULT-II Reference Value in Data Monitor Mode 1247
On Board Diagnosis Logic .................................. 1247
DTC Confirmation Procedure .............................. 1248
Wiring Diagram ................................................... 1249
Diagnostic Procedure .......................................... 1250
Component Inspection ........................................ 1253
DTC P1564 ASCD STEERING SWITCH ............... 1254
Component Description ....................................... 1254
CONSULT-II Reference Value in Data Monitor Mode 1254
On Board Diagnosis Logic .................................. 1254
DTC Confirmation Procedure .............................. 1255
Wiring Diagram ................................................... 1256
Diagnostic Procedure .......................................... 1257
Component Inspection ........................................ 1260
DTC P1568 ICC FUNCTION .................................. 1261
On Board Diagnosis Logic .................................. 1261
DTC Confirmation Procedure .............................. 1261
Diagnostic Procedure .......................................... 1261
DTC P1572 ICC BRAKE SWITCH ........................ 1262
Component Description ....................................... 1262
CONSULT-II Reference Value in Data Monitor Mode 1262
On Board Diagnosis Logic .................................. 1262
DTC Confirmation Procedure .............................. 1263
Wiring Diagram ................................................... 1264
Diagnostic Procedure .......................................... 1265
Component Inspection ........................................ 1270
DTC P1572 ASCD BRAKE SWITCH .................... 1271
Component Description ....................................... 1271
CONSULT-II Reference Value in Data Monitor Mode 1271
On Board Diagnosis Logic .................................. 1271
DTC Confirmation Procedure .............................. 1272
Wiring Diagram ................................................... 1273 Diagnostic Procedure ..........................................
1274
Component Inspection ......................................... 1278
DTC P1574 ICC VEHICLE SPEED SENSOR ........ 1279
Component Description ....................................... 1279
On Board Diagnosis Logic ................................... 1279
DTC Confirmation Procedure .............................. 1279
Diagnostic Procedure .......................................... 1280
DTC P1574 ASCD VEHICLE SPEED SENSOR .... 1281
Component Description ....................................... 1281
On Board Diagnosis Logic ................................... 1281
DTC Confirmation Procedure .............................. 1281
Diagnostic Procedure .......................................... 1282
DTC P1706 PNP SWITCH ..................................... 1283
Component Description ....................................... 1283
CONSULT-II Reference Value in Data Monitor Mode 1283
On Board Diagnosis Logic ................................... 1283
DTC Confirmation Procedure .............................. 1283
Overall Function Check ....................................... 1284
Wiring Diagram .................................................... 1285
Diagnostic Procedure .......................................... 1286
DTC P1720 VSS ..................................................... 1288
Description ........................................................... 1288
CONSULT-II Reference Value in Data Monitor Mode 1288
On Board Diagnosis Logic ................................... 1288
DTC Confirmation Procedure .............................. 1288
Diagnostic Procedure .......................................... 1289
DTC P1780 SHIFT CHANGE SIGNAL .................. 1290
Description ........................................................... 1290
On Board Diagnosis Logic ................................... 1290
DTC Confirmation Procedure .............................. 1290
Diagnostic Procedure .......................................... 1290
DTC P1800 VIAS CONTROL SOLENOID VALVE 1292 Component Description ....................................... 1292
CONSULT-II Reference Value in Data Monitor Mode 1292
On Board Diagnosis Logic ................................... 1292
DTC Confirmation Procedure .............................. 1292
Wiring Diagram .................................................... 1293
Diagnostic Procedure .......................................... 1294
Component Inspection ......................................... 1295
Removal and Installation ..................................... 1296
DTC P1805 BRAKE SWITCH ................................ 1297
Description ........................................................... 1297
CONSULT-II Reference Value in Data Monitor Mode 1297
On Board Diagnosis Logic ................................... 1297
DTC Confirmation Procedure .............................. 1297
Wiring Diagram .................................................... 1298
Diagnostic Procedure .......................................... 1299
Component Inspection ......................................... 1301
DTC P2122, P2123 APP SENSOR ........................ 1302
Component Description ....................................... 1302
CONSULT-II Reference Value in Data Monitor Mode 1302
On Board Diagnosis Logic ................................... 1302
DTC Confirmation Procedure .............................. 1303
Wiring Diagram .................................................... 1304

EC-18
[VQ35DE]
INDEX FOR DTC
Revision: 2005 July 2005 FX
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: The troubleshooting for this DTC needs CONSULT-II.
*5: When the fail-safe operations for both self-diagnoses occur, the MIL illuminates.
*6: For models with ICC or ASCD system.
*7: For models with ICC system. P1705 1705 TP SEN/CIRC A/T
AT-133
P1706 1706 P-N POS SW/CIRCUITEC-609
P1716 1716 TURBINE REV S/CIRC AT-141
P1730 1730 A/T INTERLOCKAT-145
P1752 1752 I/C SOLENOID/CIRCAT-150
P1754 1754 I/C SOLENOID FNCTNAT-152
P1757 1757 FR/B SOLENOID/CIRCAT-154
P1759 1759 FR/B SOLENOID FNCTAT-156
P1762 1762 D/C SOLENOID/CIRCAT-158
P1764 1764 D/C SOLENOID FNCTNAT-160
P1767 1767 HLR/C SOL/CIRCAT-162
P1769 1769 HLR/C SOL FNCTNAT-164
P1772 1772 LC/B SOLENOID/CIRCAT-166
P1774 1774 LC/B SOLENOID FNCTAT-168
P1805 1805 BRAKE SW/CIRCUITEC-614
P2122 2122 APP SEN 1/CIRCEC-619
P2123 2123 APP SEN 1/CIRCEC-619
P2127 2127 APP SEN 2/CIRCEC-626
P2128 2128 APP SEN 2/CIRCEC-626
P2135 2135 TP SENSOREC-633
P2138 2138 APP SENSOREC-640
DTC*1
Items
(CONSULT-II screen terms) Reference page
CONSULT-II
GST*
2ECM*3

INDEX FOR DTC EC-19
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2005 July 2005 FX
Alphabetical IndexABS006JV
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-171, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
Items
(CONSULT-II screen terms) DTC*
1
Reference page
CONSULT-II
GST*
2ECM*3
A/F SENSOR1 (B1) P1271 1271 EC-488
A/F SENSOR1 (B1) P1272 1272EC-497
A/F SENSOR1 (B1) P1273 1273EC-506
A/F SENSOR1 (B1) P1274 1274EC-516
A/F SENSOR1 (B1) P1276 1276EC-526
A/F SENSOR1 (B1) P1278 1278EC-536
A/F SENSOR1 (B1) P1279 1279EC-548
A/F SENSOR1 (B2) P1281 1281EC-488
A/F SENSOR1 (B2) P1282 1282EC-497
A/F SENSOR1 (B2) P1283 1283EC-506
A/F SENSOR1 (B2) P1284 1284EC-516
A/F SENSOR1 (B2) P1286 1286EC-526
A/F SENSOR1 (B2) P1288 1288EC-536
A/F SENSOR1 (B2) P1289 1289EC-548
A/F SEN1 HTR (B1) P1031 1031EC-405
A/F SEN1 HTR (B1) P1032 1032EC-405
A/F SEN1 HTR (B2) P1051 1051EC-405
A/F SEN1 HTR (B2) P1052 1052EC-405
A/T INTERLOCK P1730 1730 AT- 1 4 5
A/T TCC S/V FNCTN P0744 0744AT- 1 2 7
ICC COMMAND VALUE*7P1568 1568EC-587
APP SEN 1/CIRC P2122 2122 EC-619
APP SEN 1/CIRC P2123 2123EC-619
APP SEN 2/CIRC P2127 2127EC-626
APP SEN 2/CIRC P2128 2128EC-626
APP SENSOR P2138 2138EC-640
ASCD BRAKE SW*6P1572 1572EC-588, EC-597
ASCD SW*6P1564 1564 EC-574, EC-581
ASCD VHL SPD SEN*6P1574 1574 EC-605, EC-607
ATF TEMP SEN/CIRC P0710 0710 AT- 1 3 6
BRAKE SW/CIRCUIT P1805 1805EC-614
CAN COMM CIRCUIT U1000
1000*4EC-171
CAN COMM CIRCUIT U1001 1001*4EC-171
CKP SEN/CIRCUIT P0335 0335 EC-300
CLOSED LOOP-B1 P1148 1148EC-464
CLOSED LOOP-B2 P1168 1168EC-464
CMP SEN/CIRC-B1 P0340 0340EC-307
CMP SEN/CIRC-B2 P0345 0345EC-307

EC-58
[VQ35DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
Revision: 2005 July 2005 FX
*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by SAE J2012.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: SRT code will not be set if the self-diagnostic result is NG.
*5: The trouble shooting for this DTC needs CONSULT-II.
*6: When the fail-safe operations for both self-diagnoses occur at the same time, the MIL illuminates.
*7: For models with ICC or ASCD system.
*8: For models with ICC system.
*9: When the ECM is in the mode of displaying SRT status, MIL may flash. For the details, refer to EC-63, "
How to Display SRT Status" .
DTC AND 1ST TRIP DTC
The 1st trip DTC (whose number is the same as the DTC number) is displayed for the latest self-diagnostic
result obtained. If the ECM memory was cleared previously, and the 1st trip DTC did not reoccur, the 1st trip
DTC will not be displayed.
If a malfunction is detected during the 1st trip, the 1st trip DTC is stored in the ECM memory. The MIL will not
light up (two trip detection logic). If the same malfunction is not detected in the 2nd trip (meeting the required
driving pattern), the 1st trip DTC is cleared from the ECM memory. If the same malfunction is detected in the
2nd trip, both the 1st trip DTC and DTC are stored in the ECM memory and the MIL lights up. In other words,
the DTC is stored in the ECM memory and the MIL lights up when the same malfunction occurs in two consec-
utive trips. If a 1st trip DTC is stored and a non-diagnostic operation is performed between the 1st and 2nd
trips, only the 1st trip DTC will continue to be stored. For malfunctions that blink or light up the MIL during the
1st trip, the DTC and 1st trip DTC are stored in the ECM memory.
Procedures for clearing the DTC and the 1st trip DTC from the ECM memory are described in EC-68, "
HOW
TO ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION" .
ASCD VHL SPD SEN*7P1574 1574 — — 1 — EC-607,
EC-605
NATS MALFUNCTION P1610 -
P1615 1610 - 1615 — — 2 —
EC-53
TPV SEN/CIRC A/T P1705 1705 — — 1 ×AT-133
P-N POS SW/CIRCUIT P1706 1706 — — 2 ×EC-609
TURBINE REV S/CIRC P1716 1716 — — 2 ×AT-141
A/T INTERLOCK P1730 1730 — — 1 ×AT-145
I/C SOLENOID/CIRC P1752 1752 — — 1 ×AT-150
I/C SOLENOID FNCTN P1754 1754 — — 1 ×AT-152
FR/B SOLENOID/CIRC P1757 1757 — — 1 ×AT-154
FR/B SOLENOID FNCT P1759 1759 — — 1 ×AT-156
D/C SOLENOID/CIRC P1762 1762 — — 1 ×AT-158
D/C SOLENOID FNCTN P1764 1764 — — 1 ×AT-160
HLR/C SOL/CIRC P1767 1767 — — 1 ×AT-162
HLR/C SOL FNCTN P1769 1769 — — 1 ×AT-164
LC/B SOLENOID/CIRC P1772 1772 — — 1 ×AT-166
LC/B SOLENOID FNCT P1774 1774 — — 1 ×AT-168
BRAKE SW/CIRCUIT P1805 1805 — — 2 — EC-614
APP SEN 1/CIRC P2122 2122 — — 1×EC-619
APP SEN 1/CIRC P2123 2123 — — 1 ×EC-619
APP SEN 2/CIRC P2127 2127 — — 1 ×EC-626
APP SEN 2/CIRC P2128 2128 — — 1 ×EC-626
TP SENSOR P2135 2135 — — 1 ×EC-633
APP SENSOR P2138 2138 — — 1 ×EC-640
Items
(CONSULT-II screen terms) DTC*
1
SRT code
Test value/
Test limit
(GST only) Trip
Reference
page
CONSULT-II
GST*
2ECM*3

EC-108
[VQ35DE]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
2
P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater

P0138 P0139 P0158 P0159 P1146 P1147 P1166 P1167 Heated oxygen sensor 2

P0441 EVAP control system purge flow monitoring

P0444 P0445 P1444 EVAP canister purge volume control solenoid valve

P0447 P1446 EVAP canister vent control valve

P0451 P0452 P0453 EVAP control system pressure sensor

P0550 Power steering pressure sensor

P0710 P0720 P0725 P0740 P0744 P0745 P1705 P1716 P1730 P1752 P1754 P1757 P1759 P1762 P1764 P1767
P1769 P1772 P1774 A/T related sensors, solenoid valves and switches

P1031 P1032 P1051 P1052 Air fuel ratio (A/F) sensor 1 heater

P1065 ECM power supply

P 1111 P 11 3 6 I n ta k e v a l v e t i m i n g c o n t r o l s o l e n o i d v a l v e

P1122 Electric throttle control function

P1124 P1126 P1128 Electric throttle control actuator

P1217 Engine over temperature (OVERHEAT)

P1271 P1272 P1273 P1274 P1276 P1278 P1279 P1281 P1282 P1283 P1284 P1286 P1288 P1289 Air fuel ratio (A/
F) sensor 1

P1805 Brake switch
3

P0011 P0021 Intake valve timing control

P0171 P0172 P0174 P0175 Fuel injection system function

P0300 - P0306 Misfire

P0420 P0430 Three way catalyst function

P0442 P0455 P0456 EVAP control system

P0506 P0507 Idle speed control system

P1121 Electric throttle control actuator

P1148 P1168 Closed loop control

P1211 TCS control unit

P1212 TCS communication line

P1564 ICC steering switch/ASCD steering switch

P1568 ICC command valve

P1572 ICC brake switch/ASCD brake switch

P1574 ICC vehicle speed sensor/ASCD vehicle speed sensor
Priority Detected items (DTC)

EC-614
[VQ35DE]
DTC P1805 BRAKE SWITCH
Revision: 2005 July 2005 FX
DTC P1805 BRAKE SWITCHPFP:25320
DescriptionABS006X1
Brake switch signal is applied to the ECM through the stop lamp switch when the brake pedal is depressed.
This signal is used mainly to decrease the engine speed when the vehicle is driving.
CONSULT-II Reference Value in Data Monitor ModeABS006X2
Specification data are reference values.
On Board Diagnosis LogicABS006X3
The MIL will not light up for this diagnosis.
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
DTC Confirmation ProcedureABS006X4
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Fully depress the brake pedal for at least 5 seconds.
3. Erase the DTC with CONSULT-II.
4. Select “DATA MONITOR” mode with CONSULT-II.
5. If 1st trip DTC is detected, go to EC-616, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
MONITOR ITEM CONDITION SPECIFICATION
BRAKE SW

Ignition switch: ON Brake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1805
1805 Brake switch A brake switch signal is not sent to ECM for
extremely long time while the vehicle is driving.

Harness or connectors
(Stop lamp switch circuit is open or
shorted.)

Stop lamp switch
Engine operating condition in fail-safe mode
ECM controls the electric throttle control actuator by regulating the throttle opening to a small range.
Therefore, acceleration will be poor.
Vehicle condition Driving condition
When engine is idling Normal When accelerating Poor acceleration
SEF058Y

DTC P1805 BRAKE SWITCH EC-615
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2005 July 2005 FX
Wiring DiagramABS006X5
TBWM0405E

EC-616
[VQ35DE]
DTC P1805 BRAKE SWITCH
Revision: 2005 July 2005 FX
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureABS006X6
1. CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Check the stop lamp when depressing and releasing the brake pedal.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Disconnect stop lamp switch harness connector.
2. Check voltage between stop lamp switch terminal 1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
101 P/L Stop lamp switch [Ignition switch: OFF]

Brake pedal: Fully released
Approximately 0V
[Ignition switch: OFF]

Brake pedal: Slightly depressed BATTERY VOLTAGE
(11 - 14V)
Brake pedal Stop lamp
Fully released Not illuminated
Slightly depressed Illuminated
PBIB1605E
Voltage: Battery voltage
PBIB1184E

DTC P1805 BRAKE SWITCH EC-617
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2005 July 2005 FX
3. DETECT MALFUNCTIONING PART
Check the following.

10A fuse

Fuse block (J/B) connector E201

Harness for open and short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect stop lamp switch harness connector.
4. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E211, M41

Harness for open or short between ECM and stop lamp switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK STOP LAMP SWITCH
Refer to EC-618, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace stop lamp switch.
7. CHECK INTERMITTENT INCIDENT
Refer to EC-163, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Continuity should exist.
PBIB1605E