Nissan Sentra Service Manual: Main power supply and ground circuit
Diagnosis Procedure
1.CHECK TCM POWER CIRCUIT (PART 1)
- Turn ignition switch OFF.
- Disconnect TCM connector.
- Check voltage between TCM harness connector terminals and ground.
Is the inspection result normal? YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK TCM POWER CIRCUIT (PART 2)
Check voltage between TCM harness connector terminals and ground.
Is the inspection result normal? YES >> GO TO 3.
NO >> GO TO 5.
3.CHECK TCM GROUND CIRCUIT
Check continuity between TCM harness connector terminals and ground.
Is the inspection
result normal?
YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Repair or replace malfunctioning parts.
4.DETECT MALFUNCTION ITEMS (PART 1)
Check the following items:
- Open or short circuit of harness between battery positive terminal and
TCM connector terminals 45 and 46.
Refer to PG-8, "Wiring Diagram — Battery Power Supply —".
- 10A fuse (No.33, fuse and fusible link block). Refer to PG-48, "Terminal Arrangement".
- 10A fuse (No.36, fuse and fusible link block). Refer to PG-48, "Terminal Arrangement".
Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Repair or replace malfunctioning parts.
5.DETECT MALFUNCTIONING ITEMS (PART 2)
Check the following items:
- Harness open circuit or short circuit between ignition switch and IPDM E/R. Refer to PG-20, "Wiring Diagram — Ignition Power Supply —".
- Harness open circuit or short circuit between IPDM E/R and TCM.
- 10A fuse (No.45, IPDM E/R). Refer to PG-48, "Terminal Arrangement".
- IPDM E/R
Is the check result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".
NO >> Repair or replace malfunctioning parts.
P285A Clutch B Pressure
DTC Logic
DTC DETECTION LOGIC
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
Possible causes
P285A
CLUTCH B PRESSURE
(Clutch B Pressur ...
Overdrive control switch
Component Function Check
1.CHECK SPORT INDICATOR LAMP FUNCTION
Check OD OFF indicator lamp turns ON for approx. 2 seconds when ignition
switch turns ON.
Is the inspection result normal?
YES &g ...
Other materials:
C1120, C1122, C1124, C1126 ABS In valve system
DTC Logic
Dtc detection logic
DTC
Display Item
Malfunction detected condition
Possible causes
C1120
FR LH IN ABS SOL
When a malfunction is detected in front LH ABS IN
valve.
Harness or connector
ABS actuator and electric unit
(control unit)
...
Unit disassembly and assembly
OIL PUMP
O-ring
Oil pan (upper)
Oil level gauge guide
O-ring
Oil level gauge
Oil pump chain tensioner
Oil pump drive chain
Crankshaft sprocket
Oil pump sprocket
Oil pump
Drain plug washer
Drain plug
Oil pan (lower)
Oil filter
Connector bolt
Crankshaft position s ...
Basic inspection
Diagnosis and repair workflow
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1. OBTAIN INFORMATION ABOUT SYMPTOM
Interview the customer to obtain as much information as possible about the
conditions and environment under
which the malfunction occurred.
>> GO TO 2.
2. CONFIRM THE SYMPTO ...
