TOYOTA CAMRY 1999 Service Repair Manual

DI02F±02
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±449
684 Author: Date:
DIAGNOSTIC TROUBLE CODE CHART
If a DTC is displayed during the DTC check, check the circuit listed for that code in the table below and pro-
ceed to the page given.
* : ±...MIL does not light /
...MIL light up
DTC No.
(See Page)Detection ItemTrouble AreaMIL *Memory
P0500
(DI±456)Vehicle Speed Sensor Malfunc-
tion
(No.1 Vehicle Speed Sensor)
Open or short in No.1 vehicle speed sensor circuit
No.1 vehicle speed sensor
Combination meter
ECM
Automatic transaxle (clutch, brake or gear etc.)


P0750
(DI±460)Shift Solenoid A Malfunction
(Shift Solenoid Valve No.1)Shift solenoid valve No.1 is stuck open or closed
Valve body is blocked up or stuck
Automatic transaxle (clutch, brake or gear etc.)


P0753
(DI±462)Shift Solenoid A Electrical Mal-
function
(Shift Solenoid Valve No.1)Open or short in shift solenoid valve No.1 circuit
Shift solenoid valve No.1
ECM


P0755
(DI±460)Shift Solenoid B Malfunction
(Shift Solenoid Valve No.2)Shift solenoid valve No.2 is stuck open or closed
Valve body is blocked up or stuck
Automatic transaxle (clutch, brake or gear etc.)


P0758
(DI±462)Shift Solenoid B Electrical Mal-
function
(Shift Solenoid Valve No.2)Open or short in shift solenoid valve No.2 circuit
Shift solenoid valve No.2
ECM


P0770
(DI±466)Shift Solenoid E Malfunction
(Shift Solenoid Valve SL)
Shift solenoid valve SL is stuck open or closed
Valve body is blocked up or stuck
Lock±up clutch
Automatic transaxle (clutch, brake or gear etc.)


P0773
(DI±468)Shift Solenoid E Electrical Mal-
function
(Shift Solenoid Valve SL)Open or short in shift solenoid valve SL circuit
Shift solenoid valve SL
ECM


P1520
(DI±472)Stop Light Switch Signal Mal-
functionOpen or short in stop light switch circuit
Stop light switch
ECM


P1705
(DI±473)NC2 Revolution Sensor Circuit
Malfunction
(Direct Clutch Speed Sensor)Open or short in direct clutch speed sensor circuit
Direct clutch speed sensor
ECM


P1765
(DI±476)
Linear Solenoid for Accumulator
Pressure Control Circuit Mal-
function
(Shift Solenoid Valve SLN)Open or short in shift solenoid valve SLN circuit
Shift solenoid valve SLN
ECM


P1780
(DI±479)Park/Neutral Position Switch
MalfunctionShort in park/neutral position switch circuit
Park/neutral position switch
ECM



DI02G±02
Q07932
Engine Coolant Temp. SensorCruise Control ECUThrottle Position Sensor
O/D Main Switch
O/D OFF Indicator LIght
DLC3
DLC2
Stop Light Switch
Vehicle Speed Sensor
Shift Solenoid Valve SLN
Shift Solenoid Valve No.1, No2 Shift Solenoid Valve SL
Park/Neutral Position Switch Direct Clutch Speed SensorECM
Crankshaft Position
Sensor
DI±450
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
685 Author: Date:
PARTS LOCATION

DI1KA±01
FI6810
E10 E9 E8E7
34 33 32 31 30 29 28 2717 18 19 20 21 22 23 24 25 2611 12 13 14 15 161 2 3 4 5 6 7 8 9 101 2 3 4 5 6 7 8
9 10 11 12 13
14 15 16 17 18 19 20 21
22 23 24 25 26 27 28 1 2 3 4
5 6 7
8 9 10 11
12 13 14 15 16 1 2 3 4 5 6
7 8 9 10 11
12 13 14 15 16 17
18 19 20 21 22
ECM Terminals
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±451
686 Author: Date:
TERMINALS OF ECM
Except California, w/ Engine Immobilizer and / or TRAC:
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
IG ON10 ~ 14
S1 e E1 (E10±11 e E8±16)
V e BR1st or 2nd gear10 ~ 14S1 e E1 (E10 11 e E8 16)

V e BR
3rd or O/D gearBelow 1
IG ONBelow 1
S2 e E1 (E10±17 e E8±16)L±B e BR1st or 2nd gear10 ~ 14S2 e E1 (E10 17 e E8 16)LB e BR
3rd or O/D gearBelow 1
SLE1 (E10 27E8 16)PLBRIG ONBelow 1SL e E1 (E10±27 e E8±16)P±L e BRVehicle driving under lock±up position10 ~ 14
NC2+ e NC2± (E9±9 e E9±4)R e GEngine is runningPulse signal is output
Below 1 e 4 ~ 5
SLN+ e SLN±
(E10±2 e E 8±2)W±L e B±YIG ON10 ~ 14
OD1 e E1 (E7±7 e E8±16)Y±B e BRIG ON5 ~ 6
OD2E1 (E7 6E8 16)GOBRO/D main switch ON10 ~ 14OD2 e E1 (E7±6 e E8±16)G±O e BRO/D main switch OFFBelow 1
LE1 (E7 1E8 16)YBRIG ON and Shift lever L position10 ~ 14L e E1 (E7±1 e E8±16)Y e BRIG ON and Shift lever other than L positionBelow 1
2E1 (E7 10E8 16)*1, *3 L±W e BRIG ON and Shift lever 2 position10 ~ 142 e E1 (E7±10 e E8±16)1, 3 LW e BR
*2, *4 O e BRIG ON and Shift lever other than 2 positionBelow 1
RE1 (E7 15E8 16)RBBRIG ON and Shift lever R position10 ~ 14R e E1 (E7±15 e E8±16)R±B e BRIG ON and Shift lever other than R positionBelow 1
NSW e E1BWBRIG ON and Shift lever P or N position10 ~ 14NSW e E1
(E10±14 e E8±16)B±W e BRIG ON and Shift lever other than P or N positionBelow 1
*1: w/ Engine immobilizer system
*2: w/o Engine immobilizer system
*3 TMC made ex. USA w/ TRAC
*4: TMMK made, TMC made USA w/ TRAC

D01054
E10
E9
E8 E11E7
ECM Terminals DI±452
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
687 Author: Date:
California, w/ Engine Immobilizer and / or TRAC:
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
IG ON10 ~ 14
S1 e E1 (E11±7 e E10±17)
V e BR1st or 2nd gear10 ~ 14S1 e E1 (E11 7 e E10 17)

V e BR
3rd or O/D gearBelow 1
IG ONBelow 1
S2 e E1 (E11±8 e E10±17)L±B e BR1st or 2nd gear10 ~ 14S2 e E1 (E11 8 e E10 17)LB e BR
3rd or O/D gearBelow 1
SLE1 (E11 9E10 17)PLBRIG ONBelow 1SL e E1 (E11±9 e E10±17)P±L e BRVehicle driving under lock±up position10 ~ 14
NC2+ e NC2±
(E11±14 e E11±26)R e GEngine is runningPulse signal is output
Below 1 e 4 ~ 5
SLN+ e SLN±
(E11±20 e E11±19)W±L e B±YIG ON10 ~ 14
OD1 e E1 (E8±24 e E10±17)Y±B e BRIG ON5 ~ 6
OD2E1 (E8 10E10 17)GOBRO/D main switch ON10 ~ 14OD2 e E1 (E8±10 e E10±17)G±O e BRO/D main switch OFFBelow 1
LE1 (E8 12E10 17)YBRIG ON and Shift lever L position10 ~ 14L e E1 (E8±12 e E10±17)Y e BRIG ON and Shift lever other than L positionBelow 1
2E1 (E8 3E10 17)*1, *3 L±W e BRIG ON and Shift lever 2 position10 ~ 142 e E1 (E8±3 e E10±17)1, 3 LW e BR
*2, *4 O e BRIG ON and Shift lever other than 2 positionBelow 1
RE1 (E8 2E10 17)RBBRIG ON and Shift lever R position10 ~ 14R e E1 (E8±2 e E10±17)R±B e BRIG ON and Shift lever other than R positionBelow 1
NSW e E1BWBRIG ON and Shift lever P or N position10 ~ 14NSW e E1
(E8±20 e E10±17)B±W e BRIG ON and Shift lever other than P or N positionBelow 1
*1: w/ Engine immobilizer system
*2: w/o Engine immobilizer system
*3 TMC made ex. USA w/ TRAC
*4: TMMK made, TMC made USA w/ TRAC

DI02I±02
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±453
688 Author: Date:
PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the diagnostic trouble code check but the trouble still occurs, check the
circuits for each symptom in the order given in the charts on the following pages and proceed to the page
given for troubleshooting.
The Matrix Chart is divided into 3 chapters.
Chapter 1: Electronic Circuit Matrix Chart
Chapter 2: On±vehicle Repair Matrix Chart
Chapter 3: Off±vehicle repair Matrix Chart
If the instruction ºProceed to next circuit inspection shown on matrix chartº is given in the flow chart
for each circuit, proceed to the circuit with the next highest number in the table to continue the check.
If the trouble still occurs even though there are no abnormalities in any of the other circuits, then check
and replace the ECM.
1. Chapter 1: Electronic Circuit Matrix Chart
SymptomSuspect AreaSee page
No up±shift (1st " 2nd)ECMIN±31
No up±shift (2nd " 3rd)ECMIN±31
No up±shift (3rd " O/D)
1. O/D main switch circuit
2. O/D cancel signal circuit
3. ECMDI±487
DI±484
IN±31
No down±shift (O/D " 3rd)ECMIN±31
No down±shift (3rd " 2nd)ECMIN±31
No down±shift (2nd " 1st)ECMIN±31
No lock±up or No lock±up offECMIN±31
Shift point too high or too lowECMIN±31
Up±shift to 2nd while in L positionECMIN±31
Up±shift to 3rd while in L positionECMIN±31
Up±shift to O/D from 3rd1. O/D main switch circuit
2. ECMDI±487
IN±31
Up±shift to O/D from 3rd while engine is coldECMIN±31
Harsh engagement (N " D)ECMIN±31
Harsh engagement (Lock±up)ECMIN±31
Harsh engagement (Any driving position)ECMIN±31
Poor accelerationECMIN±31
Large shift shock or engine stalls when starting off or stoppingECMIN±31

DI±454
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
689 Author: Date:
2. Chapter 2: On±Vehicle Repair
(
: A541E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM530U)
SymptomSuspect AreaSee page
Vehicle does not move in any forward position and reverse posi-
tion
1. Manual valve
2. Throttle valve
3. Primary regulator valve
4. Off±vehicle repair matrix chart





DI±453
Vehicle does not move in R positionOff±vehicle repair matrix chartDI±453
No up±shift (1st " 2nd)1. 1±2 shift valve
2. Off±vehicle repair matrix chart

DI±453
No up±shift (2nd " 3rd)1. 2±3 shift valve
2. Off±vehicle repair matrix chart

DI±453
No up±shift (3rd " O/D)1. 3±4 shift valve
2. Off±vehicle repair matrix chart

DI±453
No down±shift (O/D " 3rd)3±4 shift valve

No down±shift (3rd " 2nd)2±3 shift valve

No down±shift (2nd " 1st)1±2 shift valve

No lock±up or No lock±up off1. Lock±up relay valve
2. Off±vehicle repair matrix chart

DI±453
Harsh engagement (N " D)1. C1 accumulator
2. Off±vehicle repair matrix chart

DI±453
Harsh engagement (N " R)
1. C2 accumulator
2. No.1 accumulator control valve
3. Off±vehicle repair matrix chart



DI±453
Harsh engagement (N " L)Low coast modulator valve

Harsh engagement (Lock±up)1. Lock±up relay valve
2. Off±vehicle repair matrix chart

DI±453
Harsh engagement (1st " 2nd " 3rd " O/D)
1. Throttle modulator valve
2. Cut back valve
3. Throttle valve





Harsh engagement (2nd " 3rd)C2 accumulator

Harsh engagement (3rd " O/D)B0 accumulator

Harsh engagement (O/D " 3rd)1. C0 accumulator
2. B
0 accumulator




Slip or shudder (Forward and reverse)
1. Throttle valve
2. Oil strainer
3. Off±vehicle repair matrix chart



DI±453
No engine braking (1st: L position)1. Low coast modulator valve
2. Off±vehicle repair matrix chart

DI±453
No engine braking (2nd: 2 position)1. 2nd coast modulator valve
2. Off±vehicle repair matrix chart

DI±453
No kick±down
1. 1±2 shift valve
2. 2±3 shift valve
3. 3±4 shift valve

± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±455
690 Author: Date:
3. Chapter 3: Off±Vehicle Repair
(
: A541E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM530U)
SymptomSuspect AreaSee page
Vehicle does not move in any forward position and reverse posi-
tion
1. Front and rear planetary gear
2. O/D planetary gear
3. O/D one±way clutch (F
0)
4. O/D direct clutch (C
0)
5. Forward clutch (C
1)
6. O/D brake (B
0)












Vehicle does not move in R position
1. Front and rear planetary gear unit
2. Direct clutch (C
2)
3. O/D direct clutch (C
0)
4. 1st and reverse brake (B
3)








No up±shift (1st " 2nd)1. No. 1 one±way clutch (F1)
2. 2nd brake (B
2)




No up±shift (2nd " 3rd)Direct clutch (C2)

No up±shift (3rd " O/D)O/D brake (B0)

No lock±up or No lock±up offTorque converter clutch

Harsh engagement (N " D)
1. Forward clutch (C1)
2. O/D one±way clutch (F
0)
3. No. 2 one±way clutch (F
2)






Harsh engagement (N " R)1. Direct clutch (C2)
2. 1st and reverse brake (B
3)




Harsh engagement (Lock±up)Torque converter clutch

Slip or shudder (Forward position: After warm±up)
1. Torque converter clutch
2. O/D direct clutch (C
0)
3. Forward clutch (C
1)
4. O/D one±way clutch (F
0)








Slip or shudder (R position)
1. Direct clutch (C2)
2. 1st and reverse brake (B
3)
3. O/D direct clutch (C
0)






Slip or shudder (1st)No. 2 one±way clutch (F2)

Slip or shudder (2nd)1. No. 1 one±way clutch (F1)
2. 2nd brake (B
2)




Slip or shudder (3rd)Direct clutch (C2)

Slip or shudder (O/D)O/D brake (B0)

No engine braking (1st ~ 3rd: D position)2nd brake (B2)

No engine braking (1st: L position)1st and reverse brake (B3)

No engine braking (2nd: 2 position)2nd coast brake (B1)

Poor acceleration (All position)1. Torque converter clutch
2. O/D planetary gear



Poor acceleration (O/D)1. O/D direct clutch (C0)
2. O/D planetary gear



Large shift shock or engine stalls when starting off or stoppingTorque converter clutch

DI1KB±01
A00223
Vehicle Speed
Sensor4±Pulse
Combination
Meter
ECM
Transaxle
Vehicle Speed Sensor
4±Pulse
Q00515 Q00514
DI±456
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
691 Author: Date:
CIRCUIT INSPECTION
DTC P0500 Vehicle Speed Sensor Malfunction
CIRCUIT DESCRIPTION
The vehicle speed sensor outputs a 4±pulse signal for every revolution of the rotor shaft, which is rotated
by the transmission output shaft via the driven gear. After this signal is converted into a more precise rectan-
gular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted to the
ECM. The ECM determines the vehicle speed based on the frequency of these pulse signals.
DTC No.DTC Detecting ConditionTrouble Area
P0500
No vehicle speed sensor signal to ECM under conditions (a)
and (b)
(2 trip detection logic)
(a) Park/neutral position switch is OFF
(b) Vehicle is being driven
Open or short in vehicle speed sensor circuit

Vehicle speed sensor

Combination meter

ECM
At ti t l (lthb k t )Clutch or brake slips or gear is broken
Automatic transaxle (clutch, brake or gear etc.)
WIRING DIAGRAM
See page DI±333.

P23875
A02373A02155
Except California, w/ Engine Immobilizer
and / or TRAC:
California, w/ Engine Immobilizer
and / or TRAC:SPD
SPD
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
DI±457
692 Author: Date:
INSPECTION PROCEDURE
1 Check operation of speedometer.
CHECK:
Drive the vehicle and check if the operation of the speedometer in the combination meter is normal.
HINT:
The vehicle speed sensor is operating normally if the speedometer display is normal.
NG Check speedometer circuit.
OK
2 Check for short in harness and connector between terminal SPD of ECM and
body ground.
PREPARATION:
(a) Remove the glove compartment (See page SF±73).
(b) Disconnect the connector from ECM.
CHECK:
Check continuity between terminal SPD of ECM and body
ground.
OK:
No continuity (1 M W or higher)
NG Repair or replace harness or connector.
OK

BE6653P23876D01908D02281
ON
SPD
(±)(+)
(±)
(+)
SPD Except California, w/ Engine
Immobilizer and / or TRAC:
California, w/ Engine Immobilizer
and / or TRAC:
DI±458
± DIAGNOSTICSAUTOMATIC TRANSAXLE (A541E)
693 Author: Date:
3 Check voltage between terminal SPD of ECM connector and body ground.
PREPARATION:
Turn ignition switch ON.
CHECK:
Measure voltage between terminal SPD of ECM connector and
body ground.
OK:
Voltage: 9 ~ 14 V
NG Check for open in harness and connector be-
tween junction connector (J15) and ECM (See
page IN±31).
OK
4 Check for open in harness and connector between junction connector (J15) and
combination meter (See page IN±31).
NG Repair or replace harness or connector.
OK