belt NISSAN TEANA 2003 Workshop Manual
[x] Cancel search | Manufacturer: NISSAN, Model Year: 2003, Model line: TEANA, Model: NISSAN TEANA 2003Pages: 3502, PDF Size: 74.56 MB
Page 1039 of 3502
TROUBLE DIAGNOSIS
CVT-33
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CVT
CAUTION:
Run the engine at idle for at least 1 minute.
10. Repeat steps 6 through 9 with selector lever in “R” position.
Judgement Stall Test
O: Stall speed within standard value position.
H: Stall speed is higher than standard value.
L: Stall speed is lower than standard value.
LINE PRESSURE TEST
Line Pressure Test Port
Line Pressure Test Procedure
1. Inspect the amount of engine oil and replenish if necessary.
2. Drive the car for about 10 minutes to warm it up so that the CVT fluid reaches in the range of 50 to 80°C
(122 to 176°F), then inspect the amount of CVT fluid and replenish if necessary.
NOTE:
The CVT fluid temperature rises in the range of 50 to 80°C (122 to 176°F) during 10 minutes of driv-
ing.
3. After warming up CVT, remove the oil pressure detection plug and install the oil pressure gauge. (Special
service tool: ST2505S001)
CAUTION:
When using the oil pressure gauge, be sure to use the O-ring attached to the oil pressure detec-
tion plug.
4. Securely engage the parking brake so that the tires do not turn.
Selector lever position
Expected problem location
“D” “R”
Stall rotation HO
Forward clutch
OH
Reverse brake
LL
Engine and torque converter one-way clutch
HH
Line pressure low
Primary pulley
Secondary pulley
Steel belt
SCIA1980E
SCIA7463E
Page 1053 of 3502
TROUBLE DIAGNOSIS
CVT-47
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CVT
CAUTION:
Touch “CLEAR” after changing CVT fluid, and then erase
“CVTF DETERIORATION DATE”.
SELF-DIAGNOSTIC RESULT MODE
After performing self-diagnosis, place check marks for results on the CVT-27, "DIAGNOSTIC WORKSHEET" .
Reference pages are provided following the items.
Operation Procedure
1. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE”
screen.
Display shows malfunction experienced since the last erasing
operation.
Display Items List
X: Applicable —: Not applicable
SCIA4290E
BCIA0031E
Items
(CONSULT-II screen terms)Malfunction is detected when...TCM self-
diagnosisReference
page
DTC
CAN COMM CIRCUITWhen a TCM is not transmitting or receiving CAN communication
signal for 2 seconds or moreU1000CVT-53
STARTER RELAY/CIRCIf this signal is ON other than in “P” or “N” position, this is judged to
be a malfunction
(And if it is OFF in “P” or “N” position, this is judged to be a malfunc-
tion too)P0615CVT-56
BRAKE SW/CIRC When the brake switch does not switch to ON or OFF P0703CVT-60
PNP SW/CIRCPNP switch 1-4 signals input with impossible pattern
PNP switch 3 monitor terminal open or short circuitP0705CVT-62
ATF TEMP SEN/CIRCDuring running, the CVT fluid temperature sensor signal voltage is
excessively high or lowP0710CVT-69
INPUT SPD SEN/CIRC
Input speed sensor (primary speed sensor) signal is not input due
to an open circuit
An unexpected signal is input when vehicle is being drivenP0715CVT-74
VEH SPD SEN/CIR AT
Signal from vehicle speed sensor CVT [Output speed sensor
(Secondary speed sensor)] not input due to open or short circuit
Unexpected signal input during runningP0720CVT-79
ENGINE SPEED SIG
TCM does not receive the CAN communication signal from the
ECM
Engine speed is too low while drivingP0725CVT-85
BELT DAMG Unexpected gear ratio detected P0730CVT-87
TCC SOLENOID/CIRC Normal voltage not applied to solenoid due to open or short circuit P0740CVT-89
Page 1093 of 3502
DTC P0730 BELT DAMAGE
CVT-87
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CVT
DTC P0730 BELT DAMAGEPFP:31935
DescriptionBCS001IB
TCM selects the gear ratio using the engine load (throttle position), the primary pulley revolution speed, and
the secondary pulley revolution speed as input signal. Then it changes the operating pressure of the primary
pulley and the secondary pulley and changes the groove width of the pulley.
CONSULT-II Reference ValueBCS001IC
Remarks: Specification data are reference values.
On Board Diagnosis LogicBCS001ID
TCM calculates the actual gear ratio with input speed sensor (primary speed sensor) and output speed
sensor (secondary speed sensor).
Diagnostic trouble code “P0730 BELT DAMG” with CONSULT-II is detected, when TCM receives an unex-
pected gear ratio signal.
Possible CauseBCS001IE
Transaxle assembly
DTC Confirmation ProcedureBCS001IF
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“TRANSMISSION” with CONSULT-II.
2. Make sure that output voltage of CVT fluid temperature sensor
is within the range below.
ATF TEMP SEN: 1.0 - 2.0 V
If out of range, drive the vehicle to decrease the voltage
(warm up the fluid) or stop engine to increase the voltage
(cool down the fluid)
3. Select “DATA MONITOR” mode for “TRANSMISSION” with
CONSULT-II.
4. Start engine and maintain the following conditions for at least 30
consecutive seconds.
TEST START FROM 0 km/h (0 MPH)
CONSTANT ACCELERATION: Keep 30 sec or more
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACC PEDAL OPEN: More than 1.0/8
RANGE: “D” position
ENG SPEED: 450 rpm or more
5. If DTC is detected, go to CVT-88, "
Diagnostic Procedure" .
Item name Condition Display value (Approx.)
GEAR RATIO During driving 2.37 - 0.43
BCIA0031E
Page 1094 of 3502
CVT-88
DTC P0730 BELT DAMAGE
Diagnostic ProcedureBCS001IG
1. CHECK DTC
Perform “DTC Confirmation Procedure”. Refer to CVT-87, "
DTC Confirmation Procedure" .
Are any DTC displayed?
YES - 1>> DTC except for “P0730 BELT DAMG” is displayed: Go to Check the DTC detected item. Refer to
CVT-47, "
SELF-DIAGNOSTIC RESULT MODE" .
YES - 2>> DTC for “P0730 BELT DAMG” is displayed: Replace the transaxle assembly. Refer to CVT-193,
"Removal and Installation" .
NO >>INSPECTION END
Page 1207 of 3502
DI-1
DRIVER INFORMATION SYSTEM
K ELECTRICAL
CONTENTS
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SECTION DI
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DRIVER INFORMATION SYSTEM
PRECAUTION ............................................................ 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
COMBINATION METERS ........................................... 4
System Description .................................................. 4
UNIFIED METER CONTROL UNIT ...................... 4
UNIFIED METER AND A/C AMP. ......................... 4
FAIL-SAFE ............................................................ 5
HOW TO CHANGE THE DISPLAY FOR ODO/
TRIP METER ........................................................ 6
POWER SUPPLY AND GROUND CIRCUIT ........ 6
SPEEDOMETER ................................................... 7
TACHOMETER ..................................................... 7
LOW WATER TEMPERATURE INDICATOR
LAMP, HIGH WATER TEMPERATURE WARN-
ING LAMP ............................................................. 7
FUEL GAUGE ....................................................... 7
Component Parts and Harness Connector Location ..... 7
Arrangement of Combination Meter ......................... 8
Internal Circuit .......................................................... 9
Wiring Diagram — METER — ................................ 10
Terminals and Reference Value for Combination
Meter ...................................................................... 12
Terminals and Reference Value for Unified Meter
and A/C Amp. ......................................................... 13
Self-Diagnosis Mode of Combination Meter ........... 13
SELF-DIAGNOSIS MODE FUNCTION ............... 13
OPERATION PROCEDURE ............................... 13
CONSULT-II Function ............................................ 14
Trouble Diagnosis .................................................. 14
HOW TO PROCEED WITH TROUBLE DIAGNO-
SIS ...................................................................... 14
PRELIMINARY CHECK ...................................... 15
SYMPTOM CHART 1 .......................................... 17
SYMPTOM CHART 2 .......................................... 17
Power Supply and Ground Circuit Inspection ........ 18
Vehicle Speed Signal Inspection ............................ 20
Engine Speed Signal Inspection ............................ 21
Engine Coolant Temperature Signal Inspection ..... 21Fuel Level Sensor Signal Inspection ...................... 22
Fuel Gauge Does Not Move to FULL position ........ 23
Electrical Components Inspection .......................... 24
CHECK FUEL LEVEL SENSOR UNIT ................ 24
Removal and Installation of Combination Meter ..... 25
REMOVAL ........................................................... 25
INSTALLATION ................................................... 25
Disassembly and Assembly of Combination Meter ... 25
DISASSEMBLY ................................................... 26
ASSEMBLY ......................................................... 26
UNIFIED METER AND A/C AMP .............................. 27
System Description ................................................. 27
INPUT/OUTPUT SIGNALS ................................. 27
Schematic ............................................................... 28
CONSULT-II Function (METER A/C AMP) ............. 29
CONSULT-II BASIC OPERATION ....................... 29
SELF-DIAGNOSTIC RESULTS ........................... 29
DATA MONITOR ................................................. 30
DTC [U1000] CAN Communication Circuit ............. 32
DTC [B2202] Meter Communication Circuit ........... 32
DTC [B2205] Vehicle Speed Circuit ........................ 34
Removal and Installation of Unified Meter and A/C
Amp. ....................................................................... 34
REMOVAL ........................................................... 34
INSTALLATION ................................................... 34
WARNING LAMPS .................................................... 35
System Description ................................................. 35
OIL PRESSURE WARNING LAMP ..................... 35
Schematic ............................................................... 36
Wiring Diagram — WARN — .................................. 37
Oil Pressure Warning Lamp Stays Off (Ignition
Switch ON) ............................................................. 45
Oil Pressure Warning Lamp Does Not Turn Off (Oil
Pressure Is Normal) ................................................ 46
Electrical Component Inspection ............................ 47
OIL PRESSURE SWITCH ................................... 47
A/T INDICATOR ........................................................ 48
Wiring Diagram — AT/IND — ................................. 48
A/T Indicator Is Malfunction .................................... 50
CVT INDICATOR ....................................................... 52
Page 1209 of 3502
PRECAUTION
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PRECAUTION PFP:00011
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BKS001RV
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Page 1233 of 3502
UNIFIED METER AND A/C AMP
DI-27
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UNIFIED METER AND A/C AMPPFP:27760
System DescriptionBKS001SK
For the unified meter and A/C amp., the signal required for con-
trolling the combination meter are integrated in the A/C auto
amp.
Unified meter and A/C amp. controls each operation for A/C
auto amp. For information regarding A/C control, refer to AT C -
24, "AIR CONDITIONER CONTROL" .
Unified meter and A/C amp. inputs necessary information for
combination meter from each unit by CAN communication and
so on.
And unified meter and A/C amp. outputs these signals using
communication line (TX, RX) between unified meter and A/C
amp. and combination meter.
The signals required for the distance to empty (DTE) display are centralized in the unified meter and A/C
amp., converted into data, and sent to the display unit (with display unit) using CAN communication.
Other input signals are also sent to the ECM, TCM, BCM and display unit (with display unit) using CAN
communication.
The unified meter and A/C amp. correspond a CONSULT-II function (self-diagnostic results, CAN diag-
nostic support monitor and data monitor).
INPUT/OUTPUT SIGNALS
Between Unified Meter and A/C amp. and Combination Meter
SKIB0778E
Unit Input Output
Unified meter and A/C amp.
Seat belt buckle switch signal (Driver's side)
Parking brake signal
Illumination control nighttime required signal
Refuel status signal
Low-fuel warning lamp condition signal
Combination meter receive error signal
Delivery destination data signal
Combination meter specifications signal
Vehicle speed signal (8-pulse)
Engine speed signal
Engine coolant temperature signal
Fuel level sensor signal (resistance value)
Malfunction indicator lamp signal
ABS warning lamp signal
Brake warning lamp signal
KEY warning lamp signal (With Intelligent Key)
LOCK warning lamp signal (With Intelligent Key)
High-beam request signal
Turn indicator signal
VDC OFF indicator lamp signal (With VDC)
SLIP indicator lamp signal (With VDC)
ASCD CRUISE indicator lamp signal
ASCD SET indicator lamp signal
A/T position indicator signal
A/T CHECK warning lamp signal
CVT indicator lamp signal
CVT position indicator signal
Door switch signal
Oil pressure switch signal
Position lights request signal
Front fog light request signal
Rear fog light request signal
Buzzer output signal
Page 1283 of 3502
EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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SECTION EC
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EC
ENGINE CONTROL SYSTEM
QR
INDEX FOR DTC ...................................................... 10
DTC No. Index ....................................................... 10
Alphabetical Index .................................................. 12
PRECAUTIONS ........................................................ 14
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................ 14
On Board Diagnostic (OBD) System of Engine ...... 14
Precaution .............................................................. 14
PREPARATION ......................................................... 18
Special Service Tools ............................................. 18
Commercial Service Tools ...................................... 19
ENGINE CONTROL SYSTEM .................................. 20
System Diagram ..................................................... 20
Multiport Fuel Injection (MFI) System .................... 21
Electronic Ignition (EI) System ............................... 23
Fuel Cut Control (At No Load and High Engine
Speed) .................................................................... 24
AIR CONDITIONING CUT CONTROL ..................... 25
Input/Output Signal Chart ....................................... 25
CAN COMMUNICATION .......................................... 26
System Description ................................................ 26
EVAPORATIVE EMISSION SYSTEM ....................... 27
Description ............................................................. 27
Component Inspection ........................................... 29
POSITIVE CRANKCASE VENTILATION ................. 30
Description ............................................................. 30
Component Inspection ........................................... 30
NATS (NISSAN ANTI-THEFT SYSTEM) .................. 32
Description ............................................................. 32
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 33
Introduction ............................................................ 33
Two Trip Detection Logic ........................................ 33
Emission-related Diagnostic Information ................ 33
Malfunction Indicator (MI) ....................................... 36
BASIC SERVICE PROCEDURE .............................. 40
Basic Inspection ..................................................... 40
Idle Speed and Ignition Timing Check .................... 45
Procedure After Replacing ECM ............................ 47Accelerator Pedal Released Position Learning ...... 47
Throttle Valve Closed Position Learning ................. 47
Idle Air Volume Learning ........................................ 47
Fuel Pressure Check .............................................. 49
TROUBLE DIAGNOSIS ............................................ 52
Trouble Diagnosis Introduction ............................... 52
DTC Inspection Priority Chart ................................. 58
Fail-Safe Chart ....................................................... 59
Symptom Matrix Chart ............................................ 60
Engine Control Component Parts Location ............ 64
Vacuum Hose Drawing ........................................... 69
Circuit Diagram ....................................................... 70
ECM Harness Connector Terminal Layout ............. 72
ECM Terminals and Reference Value ..................... 72
CONSULT-II Function (ENGINE) ............................ 80
CONSULT-II Reference Value in Data Monitor Mode
... 90
Major Sensor Reference Graph in Data Monitor
Mode ....................................................................... 93
TROUBLE DIAGNOSIS - SPECIFICATION VALUE ... 95
Description .............................................................. 95
Testing Condition .................................................... 95
Inspection Procedure .............................................. 95
Diagnostic Procedure ............................................. 96
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................105
Description ............................................................105
Diagnostic Procedure ...........................................105
POWER SUPPLY AND GROUND CIRCUIT ...........106
Wiring Diagram .....................................................106
Diagnostic Procedure ...........................................107
Ground Inspection .................................................111
DTC U1000, U1001 CAN COMMUNICATION LINE .113
Description ............................................................113
On Board Diagnosis Logic ....................................113
DTC Confirmation Procedure ...............................113
Wiring Diagram .....................................................114
Diagnostic Procedure ...........................................115
DTC P0011 IVT CONTROL .....................................116
Description ............................................................116
Page 1286 of 3502
EC-4 DTC P2138 APP SENSOR .....................................272
Component Description ........................................272
CONSULT-II Reference Value in Data Monitor Mode
.272
On Board Diagnosis Logic ....................................272
DTC Confirmation Procedure ...............................273
Wiring Diagram .....................................................274
Diagnostic Procedure ...........................................275
Component Inspection ..........................................279
Removal and Installation ......................................279
ELECTRICAL LOAD SIGNAL ................................280
Description ............................................................280
CONSULT-II Reference Value in Data Monitor Mode
.280
Diagnostic Procedure ...........................................280
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE .................................................282
Description ............................................................282
CONSULT-II Reference Value in Data Monitor Mode
.282
Wiring Diagram .....................................................283
Diagnostic Procedure ...........................................285
Component Inspection ..........................................288
Removal and Installation ......................................288
FUEL INJECTOR ....................................................289
Component Description ........................................289
CONSULT-II Reference Value in Data Monitor Mode
.289
Wiring Diagram .....................................................290
Diagnostic Procedure ...........................................291
Component Inspection ..........................................293
Removal and Installation ......................................294
FUEL PUMP ............................................................295
Description ............................................................295
CONSULT-II Reference Value in Data Monitor Mode
.295
Wiring Diagram .....................................................296
Diagnostic Procedure ...........................................297
Component Inspection ..........................................300
Removal and Installation ......................................300
HO2S1 .....................................................................301
Component Description ........................................301
CONSULT-II Reference Value in Data Monitor Mode
.301
Wiring Diagram .....................................................302
Diagnostic Procedure ...........................................304
Component Inspection ..........................................305
Removal and Installation ......................................307
HO2S1 HEATER .....................................................308
Description ............................................................308
CONSULT-II Reference Value in Data Monitor Mode
.308
Wiring Diagram .....................................................309
Diagnostic Procedure ...........................................310
Component Inspection ..........................................312
Removal and Installation ......................................312
HO2S2 .....................................................................313
Component Description ........................................313CONSULT-II Reference Value in Data Monitor Mode
.313
Wiring Diagram .....................................................314
Diagnostic Procedure ............................................315
Component Inspection ..........................................317
Removal and Installation .......................................318
HO2S2 HEATER ......................................................319
Description ............................................................319
CONSULT-II Reference Value in Data Monitor Mode
.319
Wiring Diagram .....................................................320
Diagnostic Procedure ............................................321
Component Inspection ..........................................323
Removal and Installation .......................................323
IAT SENSOR ...........................................................324
Component Description ........................................324
Wiring Diagram .....................................................325
Diagnostic Procedure ............................................326
Component Inspection ..........................................328
Removal and Installation .......................................328
IGNITION SIGNAL ..................................................329
Component Description ........................................329
Wiring Diagram .....................................................330
Diagnostic Procedure ............................................333
Component Inspection ..........................................337
Removal and Installation .......................................338
REFRIGERANT PRESSURE SENSOR ..................339
Component Description ........................................339
Wiring Diagram .....................................................340
Diagnostic Procedure ............................................341
Removal and Installation .......................................343
MI & DATA LINK CONNECTORS ...........................344
Wiring Diagram .....................................................344
SERVICE DATA AND SPECIFICATIONS (SDS) ....346
Fuel Pressure ........................................................346
Idle Speed and Ignition Timing ..............................346
Mass Air Flow Sensor ...........................................346
Intake Air Temperature Sensor .............................346
Engine Coolant Temperature Sensor ....................346
Crankshaft Position Sensor (POS) .......................346
Camshaft Position Sensor (PHASE) .....................346
Heated Oxygen Sensor 1 Heater ..........................346
Heated Oxygen sensor 2 Heater ..........................346
Throttle Control Motor ...........................................346
Fuel Injector ..........................................................346
Fuel Pump .............................................................346
VQ
INDEX FOR DTC .....................................................347
DTC No. Index ......................................................347
Alphabetical Index .................................................349
PRECAUTIONS .......................................................351
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................351
On Board Diagnostic (OBD) System of Engine ....351
Precaution .............................................................351
Page 1296 of 3502
![NISSAN TEANA 2003 Workshop Manual EC-14
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PRECAUTIONS
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Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BBS005B9
The Supplemental Restraint System such as](/img/5/57392/w960_57392-1295.png "NISSAN TEANA 2003 Workshop Manual EC-14
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PRECAUTIONS
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Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
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EC-14
[QR]
PRECAUTIONS
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BBS005B9
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:
To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
On Board Diagnostic (OBD) System of EngineBBS005BA
The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver of
a malfunction causing emission deterioration.
CAUTION:
Be sure to turn the ignition switch OFF and disconnect the negative battery cable before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves,
etc. will cause the MI to light up.
Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-71, "
HAR-
NESS CONNECTOR" .
Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MI to light up due to the short circuit.
Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM
before returning the vehicle to the customer.
PrecautionBBS005BB
Always use a 12 volt battery as power source.
Do not attempt to disconnect battery cables while engine is
running.
Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect negative
battery cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned OFF.
Before removing parts, turn ignition switch OFF and then
disconnect negative battery cable.
SEF289H