TOYOTA CAMRY 1999 Service Repair Manual

A09430BE6653
A09649
#10+ #20+ ON
#30+#40+
(+) (±)
± DIAGNOSTICSENGINE
DI±129
4 Check voltage of ECM terminalls #10+ ± #40+ for injector of failed cylinder.
PREPARATION:
(a) Remove the glove compartment (See Pub. No. RM654U,
page SF±64).
(b) Turn the ignition switch ON.
CHECK:
Measure the voltage between applicable terminal of the ECM
connector and body ground.
OK:
Voltage: 9 ± 14 V
HINT:
150 V is loaded on the injector at 100 msec. (in an instance)
when starting the engine.
OK Go to step 5.
NG
Replace ECM.
5 Check resistance of injector of misfiring cylinder (See page IG±1).
NG Replace injector.
OK
Check for open and short in harness and con-
nector between injector and ECM (See page
IN±29).
6 Check fuel shutoff valve operation (See page DI±86).
NG Replace or repair.
OK

DI±130
± DIAGNOSTICSENGINE
7 Check injector injection (See Pub. No. RM654U, page SF±23).
NG Replace injector.
OK
8 Check EGR system (See Pub. No. RM654U, page EC±12).
NG Repair EGR system.
OK
9 Check manifold absolute pressure sensor (See Pub. No. RM654U, page SF±53)
and engine coolant temp. sensor (See Pub. No. RM654U, page SF±49).
NG Repair or replace.
OK
Check compression pressure (See page
*1),
valve clearance (See page *2) and valve tim-
ing (See page *3).
*1: See Pub. No. RM654U, page EM±3.
*1: See Pub. No. RM654U, page EM±4.
*1: See Pub. No. RM654U, page EM±23.

DI02U±04
Vehicle Brought to Workshop
Customer Problem Analysis
Check DTC and Freeze Frame Data (Precheck)
Record or Print DTC and Freeze Frame Data P.
DI±133
Clear DTC and Freeze Frame Data P. DI±133
Visual Inspection
Setting the Check Mode Diagnosis P.
DI±133
1
Items insideare titles of pages in this manual, with the
page number indicated in the bottom portion. See the indicated
pages for detailed explanations.
P.
DI±132
Connect an OBD II scan tool or TOYOTA hand±held tester to DLC3.
If the display shows ºUNABLE TO CONNECT TO VEHICLEº when you have connected the
scan tool / TOYOTA hand±held tester, inspect DLC3 P.
DI±133
2
3
4
5
6
Symptom does not occur
Problem Symptom Confirmation8
7Symptom Simulation
P.
IN±19Symptom occurs
DTC CheckP. DI±133OK Code11Preliminary Check
P.
DI±133
DTC Chart
P. DI±145Mechanical System Test
P.
DI±133
Manual Shifting Test
P.
DI±133 OK
OK
Chapter 1
(Electronic)Chapter 2
(On±Vehicle)
P.
DI±148 OK
Chapter 3
(Off±Vehicle)OK Problem Symptoms Table± P. DI±148
Circuit
Inspection
O/D Cancel Signal Check

O/D Main Switch & O/D OFF Indica-
tor Light Circuit Check
NG
Parts Inspection
NG
NGNG
Identification of ProblemRepairConfirmation TestEnd
NG
NG
12
13
14
15
16 17 9
10
P. DI±148P. DI±148
P. DI±151 to DI±171
OK
± DIAGNOSTICSAUTOMATIC TRANSAXLE
DI±131
201 Author: Date:
AUTOMATIC TRANSAXLE
HOW TO PROCEED WITH TROUBLESHOOTING

DI02V±02
Transaxle Control
System Check SheetInspector 's
Name:
Customer 's Name
Registration No.
Registration Year
Frame No.
Date Vehicle
Brought InOdometer Readingkm
mile / /
/ /
Date Problem
Occurred
How Often Prob-
lem Occurs ?/ /
 Continuous  Intermittent ( times a day)
Symptoms
 Vehicle does not move (  Any position  Particular position )
 No up±shift (  1st " 2nd  2nd " 3rd  3rd " O/D )
 No down±shift (  O/D " 3rd  3rd " 2nd  2nd " 1st )
 Lock±up malfunction
 Shift point too high or too low
 Harsh engagement (  N " D  Lock±up  Any drive position )
 Slip or shudder
 No kick±down
 Others
Check ItemMalfunction
Indicator Lamp
DTC Check
1st Time
2nd Time Normal code Malfunction code (Code )  Normal Remains ON
 Normal code Malfunction code (Code ) DI±132
± DIAGNOSTICSAUTOMATIC TRANSAXLE
CUSTOMER PROBLEM ANALYSIS CHECK

FI0534
DI02W±05
S05335
Hand±held Tester
DLC3
± DIAGNOSTICSAUTOMATIC TRANSAXLE
DI±133
PRE±CHECK
1. DIAGNOSIS SYSTEM
(a) Description

When troubleshooting OBD II vehicles, the only dif-
ference from the usual troubleshooting procedure
is that you connect an OBD II scan tool complying
with SAE J1987 or hand±held tester to the vehicle,
and read off various data output from the vehicle's
ECM.
OBD II regulations require that the vehicle's on±
board computer lights up the Malfunction Indicator
Lamp (MIL) on the instrument panel when the com-
puter detects a malfunction in the computer itself or
in drive system components which affect vehicle
emissions. In addition to the MIL lighting up when
a malfunction is detected, the applicable DTCs pre-
scribed by SAE J2012 are recorded in the ECM
memory (See page DI±14).
If the malfunction only occurs in 3 trips, the MIL goes
off but the DTCs remain recorded in the ECM
memory.

To check the DTCs, connect an OBD II scan tool or
hand±held tester to DLC3 on the vehicle. The OBD
II scan tool or hand±held tester also enables you to
erase the DTCs and check freeze frame data and
various forms of engine data (For instruction book).
DTCs include SAE controlled codes and Manufac-
turer controlled codes.
SAE controlled codes must be set as the codes pre-
scribed by the SAE, while Manufacturer controlled
codes can be set freely by the manufacturer within
the prescribed limits (See DTC chart on page
DI±14)

N09214
DLC3 DI±134
± DIAGNOSTICSAUTOMATIC TRANSAXLE

The diagnosis system operates in normal mode
during normal vehicle use, and also has a check
mode for technicians to simulate malfunction symp-
toms and perform troubleshooting. Most DTCs use
2 trip detection logic(*) to prevent erroneous detec-
tion. By switching the ECM to check mode when
troubleshooting, the technician can cause the MIL
to light up and for a malfunction that is only detected
once or momentarily.
(hand±held tester) (See page DI±145)

*2 trip detection logic:
When a logic malfunction is first detected, the mal-
function is temporarily stored in the ECM memory.
If the same malfunction is detected again during the
2nd test drive, this 2nd detection causes the MIL to
light up.
(b) Inspect the DLC3.
The vehicle's ECM uses V.P.W. (Variable Pulse Width) for
communication to comply with SAE J1850. The terminal
arrangement of DLC3 complies with SAE J1962 and
matches the V.P.W. format.
Tester connectionConditionSpecified condition
2 (Bus
Line) ± 5 (Signal ground)During communicationPulse generation
4 (Chassis Ground) ± BodyAlways1 W or less
5 (Signal Ground) ± BodyAlways1 W or less
16 (B+) ± BodyAlways9 ± 14 V
HINT:
If your display shows ºUNABLE TO CONNECT TO VEHICLEº
when you have connected the cable of OBD II scan tool or
hand±held tester to DLC3, turned the ignition switch ON and
operated the scan tool, there is a problem on the vehicle side
or tool side.

If communication is normal when the tool is con-
nected to another vehicle, inspect DLC3 on the orig-
inal vehicle.

If communication is still not possible when the tool
is connected to another vehicle, the problem is
probably in the tool itself, so consult the Service De-
partment listed in the tool's instruction manual.

FI0534
S05335
Hand±held Tester
DLC3
± DIAGNOSTICSAUTOMATIC TRANSAXLE
DI±135
2. INSPECT DIAGNOSIS (NORMAL MODE)
(a) Check the MIL.
(1) The MIL comes on when the ignition switch is turned
ON and the engine is not running.
HINT:
If the MIL does not light up, troubleshoot the combination meter
(See page BE±4).
(2) When the engine is started, the MIL should go off.
If the lamp remains on, the diagnosis system has
detected a malfunction or abnormality in the sys-
tem.
(b) Check the DTC.
NOTICE:
(hand±held tester only): When the diagnostic system is
switched from normal mode to check mode, it erases all
DTCs and freeze frame data recorded in normal mode. So
before switching modes, always check the DTCs and
freeze frame data, and note them down.
(1) Prepare an OBD II scan tool (complying with SAE
J1978) or hand±held tester.
(2) Connect the OBD II scan tool or hand±held tester
to DLC3 at the lower portion of the instrument panel.
(3) Turn the ignition switch ON and turn the OBD II scan
tool or hand±held tester switch ON.
(4) Use the OBD II scan tool or hand±held tester to
check the DTCs and freeze frame data and note
them down (For operating instructions, see the
OBD II scan tool's instruction book).
(5) See page DI±145 to confirm the details of the DTCs.
NOTICE:
When simulating symptoms with an OBD II scan tool (ex-
cluding hand±held tester) to check the DTCs, use normal
mode. For codes on the DTCs chart subject to º2 trip detec-
tion logicº, turn the ignition switch off after the symptoms
have been simulated the 1st time. Then repeat the simula-
tion process again. When the program has DTCs, the DTCs
are recorded in the ECM.

S05335
Hand±held tester
DLC3
BR3904
ON
OFF0.13 sec.
0.13 sec. DI±136
± DIAGNOSTICSAUTOMATIC TRANSAXLE
3. INSPECT DIAGNOSIS (CHECK MODE)
HINT:
Hand±held tester only: Compared to the Normal mode, the
Check mode has high sensing ability to detect malfunctions.
Furthermore, the same diagnostic items which are detected in
Normal mode can also be detected in Check mode.
(a) Check the DTC.
(1) Check the initial conditions.

Battery positive voltage 11 V or more

Throttle valve fully closed

Transaxle in P position

Air conditioning switched off
(2) Turn the ignition switch OFF.
(3) Prepare a hand±held tester.
(4) Connect the hand±held tester to DLC3 at the lower
side of the instrument panel.
(5) Turn the ignition switch ON and switch the hand±
held tester ON.
(6) Switch the hand±held tester from Normal mode to
Check mode (Check that the MIL flashes).
(7) Start the engine (MIL goes out after the engine
starts).
(8) Simulate the conditions of the malfunction de-
scribed by the customer.
NOTICE:
Leave the ignition switch ON until you have checked the
DTCs, etc.
(9) After simulating the malfunction conditions, use the
hand±held tester diagnosis selector to check the
DTCs and freeze frame data, etc.
HINT:
Take care not to turn the ignition switch OFF, as turning it off the
diagnosis system switches from Check mode to Normal mode,
so all DTCs, etc. are erased.
(10) After checking the DTC, inspect the applicable cir-
cuit.

± DIAGNOSTICSAUTOMATIC TRANSAXLE
DI±137
(b) Clearance the DTC.
The following actions will erase the DTC and freeze frame
data. Operating an OBD II scan tool (complying with SAE
J1978) or hand±held tester to erase the codes.
(See the OBD II scan tool's instruction book for operating
instructions.)
4. ROAD TEST
NOTICE:
Perform the test at normal operating ATF temperature 50 ± 80 °C (122 ± 176 °F).
(a) D position test
Shift into the D position and fully depress the accelerator pedal and and check the following points:
(1) Check up±shift operation.
1 " 2, 2 " 3 and 3 " O/D up±shifts take place, at the shift point shown in the automatic shift
schedule (See Pub. No. RM654U on page SS±54).
HINT:

O/D Gear Up±shift Prohibition Control (1. Coolant temp. is 50 °C (122 °F) or less. 2. If there is a 10
km/h (6 mph) difference between the set cruise control speed and vehicle speed.)

O/D Gear Lock±up Prohibition Control (1. Brake pedal is depressed. 2. Coolant temp. is 50 °C
(122 °F) or less.)
(2) Check for shift shock and slip.
Check for shock and slip at the 1 " 2, 2 " 3 and 3 " O/D up±shifts.
(3) Check for abnormal noises and vibration.
Run at the D position lock±up or O/D gear and check for abnormal noises and vibration.
HINT:
The check for the cause of abnormal noises and vibration must be done very thoroughly as it could also be
due to loss of balance in the differential or torque converter clutch, etc.
(4) Check kick±down operation.
While running in the D position, 2nd, 3rd and O/D gears, check to see that the possible kick±down
vehicle speed limits for 2 " 1, 3 " 2 and O/D " 3 kick±downs conform to those indicated on
the automatic shift schedule (See Pub. No. RM654U on page SS±54).
(5) Check abnormal shock and slip at kick±down.
(6) Check the lock±up mechanism.

Drive in D position, O/D gear, at a steady speed (lock±up ON) of about 75 km/h (47 mph).

Lightly depress the accelerator pedal and check that the engine speed does not change
abruptly.
If there is a big jump in engine speed, there is no lock±up.
(b) 2 position test
Shift into the 2 position and fully depress the accelerator pedal and check the following points:
(1) Check up±shift operation.
Check to see that the 1 " 2 up±shift takes place and that the shift point conforms to the automatic
shift schedule (See Pub. No. RM654U on page SS±54).
HINT:
There is no O/D up±shift and lock±up in the 2 position.
(2) Check engine braking.
While running in the 2 position and 2nd gear, release the accelerator pedal and check the engine
braking effect.

Q00519
AT3417
OK if hot
Add if hot DI±138
± DIAGNOSTICSAUTOMATIC TRANSAXLE
(3) Check for abnormal noises during acceleration and deceleration, and for shock at up±shift and
down±shift.
(c) L position test
Shift into the 2 position and fully depress the accelerator pedal and check the following points:
(1) Check no up±shift.
While running in the L position, check that there is no up±shift to 2nd gear.
(2) Check engine braking.
While running in the L position, release the accelerator pedal and check the engine braking ef-
fect.
(3) Check for abnormal noises during acceleration and deceleration.
(d) R position test
Shift into the R position and fully depress the accelerator pedal and check for slipping.
CAUTION:
Before conducting this test ensure that the test area is free from people and obstruction.
(e) P position test
Stop the vehicle on a grade (more than 5°) and after shifting into the P position, release the parking
brake. Then, check to see that the parking lock pawl holds the vehicle in place.
5. BASIC INSPECTION
(a) Check the fluid level.
HINT:

Drive the vehicle so that the engine and transaxle are at
normal operating temperature.
Fluid temp.: 70 ± 80 °C (158 ± 176 °F)

Only use the COOL range on the dipstick as a rough refer-
ence when the fluid is replaced or the engine does not
run.
(1) Park the vehicle on a level surface and set the park-
ing brake.
(2) With the engine idling and the brake pedal de-
pressed, shift the shift lever into all positions from P
to L position and return to P position.
(3) Pull out the dipstick and wipe it clean.
(4) Push it back fully into the pipe.
(5) Pull it out and check that the fluid level is in the HOT
range.
If the level is not within the range, add new fluid.
Fluid type: ATF D±II or DEXRON®III (DEXRON®II)
NOTICE:
Do not overfill.
(b) Check the fluid condition.
If the level is not within the hot range.