Nissan Altima 2007-2012 Service Manual: P0703 stop lamp switch
Description
BCM detects ON/OFF state of the stop lamp switch and transmits the data to the TCM via CAN communication by converting the data to a signal.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION: Always drive vehicle at a safe speed.
NOTE: If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.CHECK DTC DETECTION
1. Turn ignition switch ON.
2. Start engine.
3. Start vehicle for at least 3 consecutive seconds.
4. Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.
Is “P0703 BRAKE SW/CIRC” detected? YES >> Go to TM-126, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
Diagnosis Procedure
1.CHECK STOP LAMP SWITCH CIRCUIT
1. Check and adjust the installation position of stop lamp switch. Refer to BR-13, "Inspection and Adjustment".
2. Turn ignition switch OFF.
3. Disconnect BCM harness connector M18.
4. Turn ignition switch ON.
5. Check voltage between BCM harness connector M18 terminal 26 and ground.
Is the inspection result normal? YES >> GO TO 5.
NO >> GO TO 2.
2.CHECK HARNESS BETWEEN STOP LAMP SWITCH AND BCM (PART 1)
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check continuity between stop lamp switch harness connector E38 (A) terminal 2 and BCM harness connector M18 (B) terminal 26.
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK HARNESS BETWEEN STOP LAMP SWITCH AND BCM (PART 2)
Check continuity between BCM harness connector M18 terminal 26 and ground.
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace damaged parts.
4.CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to TM-127, "Component Inspection (Stop Lamp Switch)".
Is the inspection result normal? YES >> Check the following.
• Harness for short or open between battery and stop lamp switch • 10A fuse (No. 7, located in fuse block) NO >> Repair or replace stop lamp switch.
5.CHECK BCM
1. Turn ignition switch OFF.
2. Connect BCM connector.
3. Turn ignition switch ON.
4. Select “BRAKE SW 1” in “DATA MONITOR” of “BCM” and verify the proper operation of ON/OFF. Refer to BCS-47, "Reference Value".
Is the inspection result normal? YES >> GO TO 6.
NO >> Replace BCM. Refer to BCS-96, "Removal and Installation".
6.DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal? YES >> Replace TCM. Refer to TM-254, "Exploded View".
NO >> Repair or replace damaged parts.
Component Inspection (Stop Lamp Switch)
1.CHECK STOP LAMP SWITCH
Check continuity between stop lamp switch terminals 1 and 2.
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace stop lamp switch. BR-17, "Exploded View".
P0615 start signal
Description
• TCM controls starter relay in IPDM E/R.
• TCM switches starter relay ON at “P” or “N” position and allows to crank
engine.
• Then it prohibits cranking other than ...
P0705 park/neutral position switch
Description
• The PNP switch is included in the control valve assembly.
• The PNP switch includes 4 transmission position switches.
• TCM judges the selector lever position by the PNP swi ...
Other materials:
P0746 pressure control solenoid A
performance (line pressure solenoid
valve)
Description
The pressure control solenoid valve A (line pressure solenoid valve)
regulates the oil pump discharge pressure
to suit the driving condition in response to a signal sent from the TCM.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a s ...
Cylinder block
Disassembly and Assembly
1. Cylinder block
2. O-ring
3. Crankshaft position sensor (POS)
4. Knock sensor
5. Cylinder block heater (if equipped)
6. Lower cylinder block
7. Lower cylinder block bolt
8. Snap ring
9. Connecting rod
10. Connecting rod bearing
11. Connecting rod bearing cap
...
Automatic air conditioner system
System Diagram
CONTROL SYSTEM
The control system consists of input sensors, switches, front air control and
outputs. The relationship of these
components is shown in the figure below:
System Description
CONTROL OPERATION
Display Screen
The operation status of the system is displayed on ...