brake sensor ISUZU AXIOM 2002 Service Workshop Manual

5B±4ANTI±LOCK BRAKE SYSTEM
Front Wheel Speed Sensor
Front Wheel Speed Sensor and Associated Parts
350RS033
Legend
(1) Speed Sensor Connector
(2) Sensor Cable Fixing Bolt (Upper side)(3) Sensor Cable Fixing Bolt (Lower side)
(4) Sensor Cable Fixing Bolt (Sensor side)
(5) Speed Sensor
Removal
1. Remove speed sensor connector.
2. Remove sensor cable fixing bolt (Upper side).
3. Remove sensor cable fixing bolt (Lower side).
4. Remove the speed sensor cable fixing bolt.
5. Remove speed sensor.
Inspection and Repair
1. Check the speed sensor pole piece for presence of
foreign materials; remove any dirt, etc.
2. Check the pole piece for damage; replace speed
sensor if necessary.
3. Check the speed sensor cable for short or open
circuit, and replace with a new one if necessary.
To check for cable short or open, bend or stretch the
cable while checking for continuity.
4. Check the sensor ring for damage including tooth
chipping, and if damaged, replace the sensor ring
assembly. Refer to removal of the sensor ring in
Section
4C ªFront hub and discº.
Installation
1. Install speed sensor and take care not to hit the speed
sensor pole piece during installation.
2. Install speed sensor fixing bolt and tighten the fixing
bolt to the specified torque.
Torque: 11 N´m (95 lb in)
3. Install speed sensor cable fixing bolt (Lower side) and
tighten the fixing bolt to the specified torque.
Torque : 24 N´m (17 lb ft)
4. Install speed sensor cable fixing bolt (Upper side) and
tighten the fixing bolt to the specified torque.
Torque : 6 N´m (52 lb in)
NOTE: Confirm that a white line marked on the cable is
not twisted when connecting the speed sensor cable.
5. Install speed sensor connector.

5B±5 ANTI±LOCK BRAKE SYSTEM
Rear Wheel Speed Sensor
Removal
1. Disconnect harness connector (1).
2. Remove sensor fixing bolt (2) .
3. Remove speed sensor (3).
350R100004
Inspection and Repair
1. Check speed sensor pole piece for presence of
foreign materials; remove any dirt, etc.
2. Check the pole piece for damage, and replace speed
sensor if necessary.
3. Check speed sensor cable for short or open, and
replace with a new one if necessary. To check for
cable short or open, bend or stretch the cable while
checking for continuity.
4. Check the sensor ring for damage including tooth
chipping, and if damaged, replace the axle shaft
assembly. Refer to removal of the sensor ring in
Section
4A2 ªDifferential (Rear)º.
Installation
1. Install speed sensor (3).
2. Tighten the sensor fixing bolt (2) to the specified
torque.
Torque : 24 N´m (17 lb ft)
3. Connect harness connector (1).
350R100004

5C±21 POWER±ASSISTED BRAKE SYSTEM
Fluid Reservoir Tank
Fluid Reservoir Tank and Associated Parts
330RW003
Legend
(1) Fluid Reservoir
(2) Electrical Connector(3) O±ring
(4) Retainer
Removal
NOTE: Before removing the fluid reservoir, remove the
brake fluid from the fluid reservoir.
1. Disconnect electrical connector.
2. Remove retainer (1).
330RW004
3. Remove fluid reservoir and the fluid level sensor built
into the fluid reservoir. The fluid level sensor cannot
be removed for servicing.
4. Remove O±ring.
Installation
To install, follow the removal steps in the reverse order,
noting the following points:
1. O±ring (1) must be set onto the fluid reservoir (2),
before installing fluid reservoir.
330RW005

6A±11
ENGINE MECHANICAL (6VE1 3.5L)
Condition CorrectionPossible cause
Engine overheatingLevel of Engine Coolant too lowReplenish
Fan clutch defectiveReplace
Incorrect fan installedReplace
Thermostat defectiveReplace
Engine Coolant pump defectiveCorrect or replace
Radiator cloggedClean or replace
Radiator filler cap defectiveReplace
Level of oil in engine crankcase too
low or wrong engine oilChange or replenish
Resistance in exhaust system
increasedClean exhaust system or replace
defective parts
Throttle Position Sensor adjustment
incorrectReplace with Throttle Valve ASM
Throttle Position Sensor circuit open
or shortedCorrect or replace
Cylinder head gasket damagedReplace
Engine overcoolingThermostat defectiveReplace (Use a thermostat set to
open at 82
C (180
F))
Engine lacks compressionÐÐÐÐRefer to Hard Start
OthersTire inflation pressure abnormalAdjust to recommended pressures
Brake dragAdjust
Clutch slippingAdjust or replace
Level of oil in engine crankcase too
highCorrect level of engine oil
Exhaust Gas Recirculation Valve
defectiveReplace

6E±3
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
DTC P0135 HO2S Heater Circuit
Bank 1 Sensor 1 6E±179. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0137 HO2S Circuit Low Voltage
Bank 1 Sensor 2 6E±182. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0138 HO2S Circuit High Voltage
Bank 1 Sensor 2 6E±185. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0140 HO2S Circuit Insufficient Activity
Bank 1 Sensor 2 6E±188. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0141 HO2S Heater Circuit
Bank 1 Sensor 2 6E±191. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0151 HO2S Circuit Low Voltage
Bank 2 Sensor 1 6E±194. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0152 HO2S Circuit High Voltage
Bank 2 Sensor 1 6E±197. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0153 HO2S Slow Response
Bank 2 Sensor 1 6E±200. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0154 HO2S Circuit Insufficient Activity
Bank 2 Sensor 1 6E±204. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0155 HO2S Heater Circuit Open
Bank 2 Sensor 1 6E±207. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0157 HO2S Circuit Low Voltage
Bank 2 Sensor 2 6E±210. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0158 HO2S Circuit High Voltage
Bank 2 Sensor 2 6E±213. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0160 HO2S Circuit Insufficient Activity
Bank 2 Sensor 2 6E±216. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0161 HO2S Heater Circuit
Bank 2 Sensor 2 6E±219. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0171 Fuel Trim System Lean Bank 1 6E±222.
DTC P0172 Fuel Trim System Rich Bank 1 6E±226.
DTC P0174 Fuel Trim System Lean Bank 2 6E±230.
DTC P0175 Fuel Trim System Rich Bank 2 6E±234.
DTC P0201 Injector 1 Control Circuit 6E±238. . . . . .
DTC P0202 Injector 2 Control Circuit 6E±241. . . . . .
DTC P0203 Injector 3 Control Circuit 6E±244. . . . . .
DTC P0204 Injector 4 Control Circuit 6E±247. . . . . .
DTC P0205 Injector 5 Control Circuit 6E±250. . . . . .
DTC P0206 Injector 6 Control Circuit 6E±253. . . . . .
DTC P0300 Engine Misfire Detected 6E±256. . . . . . .
DTC P0301 Cylinder Misfire Detected 6E±260. . . . . .
DTC P0302 Cylinder Misfire Detected 6E±262. . . . . .
DTC P0303 Cylinder Misfire Detected 6E±264. . . . . .
DTC P0304 Cylinder Misfire Detected 6E±266. . . . . .
DTC P0305 Cylinder Misfire Detected 6E±268. . . . . .
DTC P0306 Cylinder Misfire Detected 6E±270. . . . . .
DTC P0325 ION Sensing Module/ION
Sensing Knock Intensity Circuit Fault 6E±272. . . . . .
DTC P0336 58X Reference Signal Circuit 6E±275. .
DTC P0337 CKP Sensor Circuit Low
Frequency 6E±278. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0351 Ignition 1 Control Circuit 6E±281. . . . . . .
DTC P0352 Ignition 2 Control Circuit 6E±284. . . . . . .
DTC P0353 Ignition 3 Control Circuit 6E±287. . . . . . .
DTC P0354 Ignition 4 Control Circuit 6E±290. . . . . . .
DTC P0355 Ignition 5 Control Circuit 6E±293. . . . . . . DTC P0356 Ignition 6 Control Circuit 6E±296. . . . . . .
DTC P0401 EGR Flow Insufficient 6E±299. . . . . . . . .
DTC P0402 EGR Pintle Crank Error 6E±302. . . . . . .
DTC P0404 EGR Open Stuck 6E±304. . . . . . . . . . . . .
DTC P0405 EGR Low Voltage 6E±306. . . . . . . . . . . .
DTC P0406 EGR High Voltage 6E±309. . . . . . . . . . .
DTC P0420 TWC System Low Efficiency
Bank 1 6E±312. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0430 TWC System Low Efficiency
Bank 2 6E±315. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0440 EVAP System 6E±318. . . . . . . . . . . . . . . .
DTC P0442 EVAP System Small Leak
Detected 6E±321. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0444 EVAP Purge Control Circuit
Open 6E±324. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0445 EVAP Purge Control Circuit
Short 6E±326. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0446 EVAP Canister Vent Control
Malfunction 6E±328. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0447 EVAP Vent Solenoid Circuit
Open 6E±331. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0448 EVAP Vent solenoid Circuit
Short 6E±333. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0452 Fuel Tank Pressure Sensor
(Vapor Pressure Sensor) Low Voltage 6E±335. . . . .
DTC P0453 Fuel Tank Pressure Sensor
(Vapor Pressure Sensor) High Voltage 6E±338. . . . .
DTC P0456 EVAP Very Small Leak 6E±341. . . . . . .
DTC P0461 Fuel Level Sensor Performance 6E±344
DTC P0462 Fuel Level Sensor Circuit±Low
Voltage 6E±346. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0463 Fuel Level Sensor Circuit±High
Voltage 6E±349. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0462 Fuel Level Sensor Noisy Signal 6E±351
DTC P0502 VSS Circuit Low Input 6E±353. . . . . . . . .
DTC P0506 Idle Air Control System Low
RPM 6E±356. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0507 Idle Air Control System High
RPM 6E±359. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0562 System Voltage Low 6E±362. . . . . . . . . .
DTC P0563 System Voltage High 6E±364. . . . . . . . .
DTC P0565 Cruise Main Switch Circuit Error 6E±366
DTC P0566 Cruise Cancel Switch Circuit
Error 6E±368. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0567 Cruise Resume Switch Circuit
Error 6E±370. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0568 Cruise Set Switch Circuit Error 6E±372.
DTC P0571 No Brake Switch Signal 6E±374. . . . . . .
DTC P0601 PCM Memory 6E±376. . . . . . . . . . . . . . . .
DTC P0602 PCM Programming Error 6E±378. . . . . .
DTC P0604 PCM RAM Error 6E±380. . . . . . . . . . . . . .
DTC P0606 PCM Internal Performance 6E±382. . . .
DTC P1106 MAP Sensor Circuit Intermittent
High Voltage 6E±384. . . . . . . . . . . . . . . . . . . . . . . . . . .

6E±4
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
DTC P1107 MAP Circuit Intermittent Low
Voltage 6E±386. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D T C P 1111 I AT Sensor Circuit Intermittent
High Voltage 6E±388. . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1112 IAT Sensor Circuit Intermittent
Low Voltage 6E±391. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1114 ECT Sensor Circuit Intermittent
Low Voltage 6E±393. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1115 ECT Sensor Circuit Intermittent
High Voltage 6E±395. . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Trouble Code(DTC)P1120-TPS 1
Throttle Position Sensor (TPS1) Output
Abnormal 6E±398. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1125 ETC (Electric Throttle Control)
Limit Performance Mode 6E±401. . . . . . . . . . . . . . . . .
DTC P1133 HO2S Insufficient Switching
Bank 1 Sensor 1 6E±404. . . . . . . . . . . . . . . . . . . . . . . .
DTC P1134 HO2S Transition Time Ratio
Bank 1 Sensor 1 6E±408. . . . . . . . . . . . . . . . . . . . . . . .
DTC P1153 HO2S Insufficient Switching
Bank 2 Sensor 1 6E±412. . . . . . . . . . . . . . . . . . . . . . . .
DTC P1154 HO2S Circuit Transition Time
Ratio Bank 2 Sensor 1 6E±416. . . . . . . . . . . . . . . . . .
DTC P1167 Fuel System Rich During Decel
Fuel Cut Off (Bank 1) 6E±420. . . . . . . . . . . . . . . . . . . .
DTC P1169 Fuel System Rich During Decel
Fuel Cut Off (Bank 2) 6E±422. . . . . . . . . . . . . . . . . . . .
DTC P1171 Fuel System Lean During
Acceleration 6E±424. . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1220 Throttle Position Senser2
(TPS2) Circuit Fault 6E±427. . . . . . . . . . . . . . . . . . . . .
DTC P1221 TPS1 ± TPS2 Correlation
(Circuit Performance) 6E±430. . . . . . . . . . . . . . . . . . .
DTC P1271 APS 1± 2 Correlation Error 6E±433. . .
DTC P1272 APS 2 ± 3 Correlation Error 6E±436. . .
DTC P1273 APS 1 ± 3 Correlation Error 6E±439. . . .
DTC P1275 APS 1 Output Fault 6E±442. . . . . . . . . . .
DTC P1280 APS 2 Output Fault 6E±444. . . . . . . . . . .
DTC P1285 APS 3 Output Fault 6E±446. . . . . . . . . . .
DTC P1290 ETC Forced Idle Mode 6E±448. . . . . . . .
DTC P1295 ETC Power Management Mode 6E±451
DTC P1299 ETC Forced Engine Shutdown
Mode 6E±455. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1310 ION Sensing Module Diagnosis 6E±459
DTC P1311 ION Sensing Module SEC
Line 1 Circuit Fault 6E±462. . . . . . . . . . . . . . . . . . . . . .
DTC P1312 ION Sensing Module SEC
Line 2 Circuit Fault 6E±465. . . . . . . . . . . . . . . . . . . . . .
DTC P1326 ION Sensing Module Combustion
Quality Input Circuit Fault 6E±468. . . . . . . . . . . . . . . .
DTC P1340 ION Sensing Module Cylinder ID
Fault (Cylinder Synchronization Fail) 6E±471. . . . . .
DTC P1404 EGR Stuck Closed 6E±474. . . . . . . . . . .
DTC P1441 EVAP System Flow During
Non-Purge 6E±477. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1514 TPS - MAF Correlation Error 6E±480. . . DTC P1515 Command - Actual TPS
Correlation Error 6E±484. . . . . . . . . . . . . . . . . . . . . . . .
DTC P1516 Command - Actual TPS
Correlation Error 6E±487. . . . . . . . . . . . . . . . . . . . . . . .
DTC P1523 Actuator Control Return
Performance 6E±490. . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1571 Brake Switch No Operation 6E±493. . . .
DTC P1625 PCM Unexpected Reset 6E±495. . . . . . .
DTC P1635 Reference Voltage # 1 Circuit
Fault 6E±496. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1639 Reference Voltage # 2 Circuit
Fault 6E±498. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1640 Driver-1-Output Circuit Fault
(ODM) 6E±500. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1650 Quad Driver Module ªAº Fault 6E±503. .
Symptom Diagnosis 6E±506. . . . . . . . . . . . . . . . . . . . .
Default Matrix Table 6E±535. . . . . . . . . . . . . . . . . . . . .
On Vehicle Service
Crankshaft Position (CKP) Sensor 6E±538. . . . . . . . .
Engine Coolant Temperature (ECT) Sensor 6E±538.
Heated Oxygen Sensor (HO2S) 6E±539. . . . . . . . . . .
Intake Air Temperature (IAT) Sensor 6E±542. . . . . . .
ION Sensing Module 6E±542. . . . . . . . . . . . . . . . . . . . .
Mass Air Flow (MAF) Sensor 6E±543. . . . . . . . . . . . .
Manifold Absolute Pressure (MAP) Sensor 6E±544.
Malfunction Indicator Lamp (MIL) 6E±545. . . . . . . . . .
Reduced Power Lamp 6E±545. . . . . . . . . . . . . . . . . . .
Powertrain Control Module (PCM) 6E±545. . . . . . . . .
Service Precaution 6E±545. . . . . . . . . . . . . . . . . . . .
EEPROM 6E±547. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Throttle Position (TP) Sensor 6E±547. . . . . . . . . . . . .
Vehicle Speed Sensor (VSS) 6E±548. . . . . . . . . . . . .
Air Cleaner/Air Filter 6E±549. . . . . . . . . . . . . . . . . . . . .
Common Chamber 6E±549. . . . . . . . . . . . . . . . . . . . . .
Accelerator Pedal Replacement 6E±550. . . . . . . . . . .
Accelerator Position Sensor Replacement 6E±551. .
Accelerator Position Sensor Adjustment 6E±551. . . .
Fuel Filler Cap 6E±552. . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Filter 6E±552. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Gauge Unit 6E±553. . . . . . . . . . . . . . . . . . . . . . . .
Fuel Injectors 6E±554. . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Metering System 6E±555. . . . . . . . . . . . . . . . . . . .
Fuel Pump Assembly 6E±555. . . . . . . . . . . . . . . . . . . .
Fuel Pump Relay 6E±556. . . . . . . . . . . . . . . . . . . . . . . .
Fuel Rail Assembly 6E±557. . . . . . . . . . . . . . . . . . . . . .
Fuel Tank 6E±558. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Throttle Body (TB) 6E±558. . . . . . . . . . . . . . . . . . . . . . .
Electronic Ignition System 6E±560. . . . . . . . . . . . . . . .
Catalytic Converter 6E±561. . . . . . . . . . . . . . . . . . . . . .
Air Conditioning Thermo Relay 6E±561. . . . . . . . . . .
EVAP Canister Hoses 6E±561. . . . . . . . . . . . . . . . . . . .
EVAP Canister 6E±562. . . . . . . . . . . . . . . . . . . . . . . . . .
EVAP Canister Vent Solenoid 6E±562. . . . . . . . . . . . .

6E±15
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
PCM Pinout Table, 80-Way Blue Connector ± Row ªF20 ~ 40º
060RY00156
PINPIN FunctionWire ColorIGN ONENG RUNRefer To
F21Bank 1 HO2S 1 GroundWHT0.0V0.0VÐ
F22Not UsedÐÐÐÐ
F23Bank 2 HO2S 1 GroundBLU0.0V0.0VGeneral Description
F24Not UsedÐÐÐÐ
F25ION Sensing ModuleRED/BLU1.555V1.555VGeneral Description and
Operation, ION Sensing
Module
F26ION Sensing ModuleRED/BLK1.555V1.555VGeneral Description and
Operation, ION Sensing
Module
F27Intake Air Temperature
(IAT) Sensor SignalGRN0.5±4.9V0.5±4.9VGeneral Description and
Operation, IAT
F28Not UsedÐÐÐÐ
F29Manifold Absolute
Pressure (MAP) Sensor
SignalRED3.5V±4.9V
(depends on
altitude and
barometric
pressure)0.6-1.3VGeneral Description and
Operation, Manifold Absolute
Pressure
F30Not UsedÐÐÐÐ
F31Not UsedÐÐÐÐ
F32Not UsedÐÐÐÐ
F33Not UsedÐÐÐÐ
F34Not UsedÐÐÐÐ
F35Not UsedÐÐÐÐ
F36Not UsedÐÐÐÐ
F37Power Steering Pressure
(PSP)GRN/YELB+B+Power Steering
F38Illuminated SwitchGRN/YELB+B+Chassis Electrical
F39Brake SwitchRED0.0V0.0V4L30E T/Mission
F40PCM GroundBLK/BLU0.0V0.0VChassis Electrical

6E±78
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
MISFIRE CUR. CYL. #1 /#2 /#3 /#4 / #5 / #6 Ð Tech 2
Range 0-65535 Counts Ð
The misfire history counters display the relative level of
misfire that has been detected on each cylinder. The
misfire history counters will not update or show any
activity until a misfire DTC (P0300) has become active.
MISFIRE FAILURES SINCE FIRST FAIL Ð Tech 2
Range 0-65535 Counts Ð
Indicates the number of 200 crankshaft revolution sample
periods during which the level of misfire was sufficiently
high to report a fail.
MISFIRE PASSES SINCE FIRST FAIL Ð Tech 2
Range 0-65535 Counts Ð
Indicates the number of 200 crankshaft revolution sample
periods during which the level of misfire was sufficiently
low to report a pass.
POWER ENRICHMENT Ð Tech 2 Displays ACTIVE
or INACTIVE Ð
ªACTIVEº displayed indicates that the PCM has detected
conditions appropriate to operate in power enrichment
mode. The PCM will command power enrichment mode
when a large increase in throttle position and load is
detected. While in power enrichment mode, the PCM will
increase the amount of fuel delivered by entering open
loop and increasing the injector pulse width. This is done
to prevent a possible sag or hesitation from occurring
during acceleration.
SPARK Ð Tech 2 Range ±64
to 64
Ð
Displays the amount of spark advance being commanded
by the PCM on the IC circuit.
START-UP ECT Ð Tech 2 Range ±40
C to 151
C
(±40
F to 304
F) Ð
Indicates the engine coolant temperature at the time that
the vehicle was started. Used by the HO2S diagnostic to
determine if the last start-up was a cold start.
START-UP IAT Ð Tech 2 Range ±40
C to 151
C
(±40
F to 304
F) Ð
Indicates the intake air temperature at the time that the
vehicle was started. Used by the HO2S diagnostic to
determine if the last start-up was a cold start.
TOTAL MISFIRE CURRENT COUNT Ð Tech 2
Range 0-255 Ð
Indicates the total number of cylinder firing events that
were detected as being misfires during the last 200
crankshaft revolution sample period.
TP Ð Tech 2 Range 0%-100% Ð
TP (throttle position) angle is computed by the PCM from
the TP sensor voltage. TP angle should display ª3-5%º
at idle and ª100%º at wide open throttle.
CATALYST PROTECTION MODE Ð Tech 2 Displays
YES or NO Ð
ªYESº displayed indicates that the PCM has detected
conditions appropriate to operate in TWC protection
mode. The PCM will decrease the air/fuel ratio to a value
that depends on mass air flow (higher mass air flow =
lower air/fuel ratio).UPSHIFT LAMP (MANUAL TRANSMISSION)
VEHICLE SPEED Ð Tech 2 Range 0-255 km/h
(0-155 mph) Ð
The vehicle speed sensor signal is converted into km/h
and mph for display.
WEAK CYLINDER Ð Tech 2 Displays Cylinder
Number Ð
This indicates that the PCM has detected crankshaft
speed variations that indicate 2% or more cylinder firing
events are misfires.
Typical Scan Data Values
Use the Typical Scan Data Values Table only after the
On-Board Diagnostic System Check has been
completed, no DTC(s) were noted, and you have
determined that the on-board diagnostics are functioning
properly. Tech 2 values from a properly-running engine
may be used for comparison with the engine you are
diagnosing. The typical scan data values represent
values that would be seen on a normally-running engine.
NOTE: A Tech 2 that displays faulty data should not be
used, and the problem should be reported to the Tech 2
manufacturer. Use of a faulty Tech 2 can result in
misdiagnosis and unnecessary replacement of parts.
Only the parameters listed below are referred to in this
service manual for use in diagnosis. For further
information on using the Tech 2 to diagnose the PCM and
related sensors, refer to the applicable reference section
listed below. If all values are within the typical range
described below, refer to the
Symptoms section for
diagnosis.
Test Conditions
Engine running, lower radiator hose hot, transmission in
park or neutral, closed loop, accessories off, brake not
applied and air conditioning off.

6E±79
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
3.5L V-6 Engine (Automatic and Manual Transmission)
Tech 2
Parameter
Data ListUnits DisplayedTypical Data
Values (IDLE)Typical Data
Values
(2500 RPM)Refer To
A/C Clutch
RelayEngineOn/OffOffOffGeneral Description and
Operation, A/C Clutch
Circuit Operation
A/C RequestEngineYes/NoNoNoGeneral Description and
Operation, A/C Request
Signal
Air/Fuel RatioEngineRatio: _ to 114.714.7General Description and
Operation, Fuel System
Metering Purpose
APP Sensor1EnginePercent11±1335±40General Description and
Operation
APP Sensor2EnginePercent87±8860±65General Description and
Operation
APP Sensor3EnginePercent87±8850±57General Description and
Operation
Barometric
PressureEnginekPa61-104
(depends on
altitude and
barometric
pressure)61-104
(depends on
altitude and
barometric
pressure)General Description and
Operation
Brake Light
SwitchEngineOpen 0V/Closed
12VOpen 0VOpen 0VRefer to Section 5
Check Trans
Lamp (Auto
Trans)EngineOn/OffOffOff4L30-E Automatic
Transmission Diagnosis
Cruise Main
SwitchEngineActive/InactiveInactiveInactiveRefer to Section 10
Cruise Set
SwitchEngineActive/InactiveInactiveInactiveRefer to Section 10
Cruise Cancel
SwitchEngineActive/InactiveInactiveInactiveRefer to Section 10
Cruise
Resume
SwitchEngineActive/InactiveInactiveInactiveRefer to Section 10
Decel Fuel
CutoffEngineActive/InactiveInactiveInactiveGeneral Description and
Operation, Deceleration
Mode
Desired EGR
PositionEnginePercent0%0%General Description and
Operation, EGR Pintle
Position Sensor
Desired Idle
SpeedEngineRPM750800General Description and
Operation
ECT (Engine
Coolant Temp)EngineDegrees C,
Degrees F80-100
C
(176-212
F)80-100
C
(176-212
F)General Description and
Operation, Engine
Coolant Temperature
(ECT) Sensor
EGR Closed
Pintle PositionEngineSteps20-4020-40General Description and
Operation, EGR Pintle
Position Sensor

6E±83
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
Tech 2
ParameterRefer To Typical Data
Values
(2500 RPM) Typical Data
Values (IDLE) Units Displayed Data List
Spark
(Advance)EngineDegrees Before
Top Dead Center15-2234-44General Description and
Operation, Electronic
Ignition System
Start-Up ECT
(Engine
Coolant Temp)EngineDegrees C,
Degrees FDepends on
engine coolant
temperature at
time of start-upDepends on
engine coolant
temperature at
time of start-upGeneral Description and
Operation, Engine
Coolant Temperature
(ECT) Sensor
Start-Up IAT
(Intake Air
Temp)EngineDegrees C,
Degrees FDepends on
intake air
temperature at
time of start-upDepends on
intake air
temperature at
time of start-upGeneral Description and
Operation, Intake Air
Temperature (IAT) Sensor
TCC Cruise
Brake SwitchEngineActive/InactiveActiveActiveRefer to Section 10
Total Misfire
Current CountMisfireCounts0-50-5DTC P0300
TP Sensor 1
(Throttle
Position
Sensor 1)EnginePercentage8±1228±36General Description and
Operation, Throttle
Position (TP) Sensor
TP Sensor 2
(Throttle
Position
Sensor 2)EnginePercentage8±1228±36General Description and
Operation, Throttle
Position (TP) Sensor
Throttle at IdleEngineNo/YesYe sNoGeneral Description and
Operation, Throttle
Position (TP) Sensor
Upshift Lamp
(manual trans)EngineOn/OffOffOffManual Transmission
Vehicle SpeedEngineMPH / km/h004L30-E Automatic
Transmission Diagnosis
Weak CylinderMisfireCylinder #ÐÐDTC P0300