1998 TOYOTA LAND CRUISER check engine light

D12640
D11985Control Shaft Lever
Loosen this nut
D07226
Neutral Basic line
Bolt
Groove
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-375
568 Author
: Date
:
(g) 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 that the parking lock pawl holds the vehicle in place.
11. ADJUST SHIFT LEVER POSITION
When shifting the shift lever from the N position to other posi-
tions, check that the lever can be shifted smoothly and accu-
rately to each position and that the position indicator is not
aligned with the correct position.
If the indicator is not aligned with the correct position, carry out
the following adjustment procedures.
(a) Loosen the nut on the shift lever.
(b) Push the control shaft fully rearward.
(c) Return the control shaft lever 2 notches to N position.
(d) Set the shift lever to N position.
(e) While holding the shift lever lightly toward the R position
side, tighten the shift lever nut.
Torque: 13 N´m (130 kgf´cm, 9 ft´lbf)
(f) Start the engine and make sure that the vehicle moves
forward when shifting the lever from the N to D position
and reverses when shifting it to the R position.
12. ADJUST PARK/NEUTRAL POSITION SWITCH

Check that the engine can be started with the shift lever
only in the N or P position, but not in other positions.
If it is not as stated above, carry out the following adjustment
procedures.

Loosen the park/neutral position switch bolt and set
the shift lever to the N position.

Align the groove with neutral basic line.

Hold in position and tighten the bolt.
Torque: 13 N´m (130 kgf´cm, 9 ft´lbf)

For continuity inspection of the park/neutral position
switch, see page DI-394.
13. CHECK IDLE SPEED
Idle speed (In N position and air conditioner OFF):
700 ± 50 rpm

DI3BT-04
DI-396
- DIAGNOSTICSAUTOMATIC TRANSMISSION
589 Author
: Date
:
2004 LAND CRUISER (RM1071U)
PROBLEM SYMPTOMS TABLE
If a normal code is displayed during the diagnostic trouble code check although the trouble still occurs, check
the electrical 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.
Chapter 1: Electronic Circuit Matrix Chart
HINT:
*1: When a malfunction is on the circuit *1 mark is attached, DTC is output.
SymptomSuspect AreaSee page
No up-shift
(A particular gear, from 1st to 4th gear, is not up-shifted)1. Shift solenoid valve (S1) circuit *1
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI-460
DI-464
IN-36
No up-shift (4th " 5th)
1. Transmission control switch circuit (D - 4) *1
2. Engine coolant temp. sensor circuit *1
3. Speed sensor NT circuit *1
4. Shift solenoid valve (SL1) circuit *1
5. Shift solenoid valve (SL2) circuit *1
6. Shift solenoid valve (SR) circuit *1
7. ECM
DI-402
DI-36
DI-418
DI-426
DI-449
DI-468
IN-36
No up-shift (3rd " 4th)
1. Engine coolant temp. sensor circuit *1
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI-36
DI-464
IN-36
No up-shift (1st " 2nd)
1. Transmission control switch circuit (2 - L) *1
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI-402
DI-464
IN-36
No down-shift (5th " 4th)
1. Transmission control switch circuit (D - 4) *1
2. Shift solenoid valve (SL1) circuit *1
3. Shift solenoid valve (SL2) circuit *1
4. Shift solenoid valve (SR) circuit *1
5. ECM
DI-402
DI-426
DI-449
DI-468
IN-36
No down-shift (2nd " 1st)
1. Transmission control switch circuit (2 - L) *1
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI-402
DI-464
IN-36
No down-shift
(A particular gear, from 1st to 4th gear, is not down-shifted)1. Shift solenoid valve (S1) circuit *1
2. Shift solenoid valve (S2) circuit *1
3. ECM
DI-460
DI-464
IN-36
No lock-up
1. ATF temperature sensor circuit *1
2. Transfer L4 position switch circuit *1
3. Stop light switch circuit *1
4. Speed sensor NT circuit *1
5. Shift solenoid valve (SLU) circuit *1
6. ECM
DI-410
DI-472
DI-424
DI-418
DI-491
IN-36
No lock-up offECMIN-36

I24838
(1) (3)
I24838
(2), (7) (1), (4)
(1), (4) DI-986
- DIAGNOSTICSCRUISE CONTROL SYSTEM
1179 Author
: Date
:
2004 LAND CRUISER (RM1071U)

Pull the cruise control switch to CANCEL
(e) Inspect the RESUME switch.
(1) Push the main switch button to ON.
(2) Drive at a desired speed [40 km/h (25 mph) or high-
er].
(3) When operating one of the followings, check that
the cruise control system is cancelled and that the
normal driving mode is reset.

Depress the brake pedal

Shift to except D position

Press the main switch button to OFF
(4) After the control switch is pulled up to +/RES at the
driving speed of more than 40 km/h (25 mph), check
that the vehicle restores the speed before the can-
cellation.
6. INPUT SIGNAL CHECK
HINT:

For check No.1 - No. 3
Turn the ignition switch to ON.

For check No. 4
Jack up the vehicle.
Start the engine.
Shift to D position
(a) Check the input signal
(1) Keep the main switch to -/SET or +/RES position
and hold it down or hold it up.
(2) Press the switch button to ON.
(3) Check that the CRUISE mainindicator light blinks
twice or 3 times repeatedly after 3 seconds.
(4) Turn the -/SET or +/RES switch to OFF.
(5) Operate each switch as listed in the table below.
(6) Read the blinking pattern of the CRUISE main indi-
cator light.
(7) After performing the check, turn the main switch
button to OFF.

A21033ECM ConnectorW
E9
DI-356
- DIAGNOSTICSENGINE
549 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
HINT:
Troubleshoot each trouble symptom in accordance with the chart below .
MIL remains onStart inspection from step 1
MIL does not light upStart inspection from step 3
1 Clear DTC.
(a) Connect the hand-held tester or the OBD II scan tool to the DLC3.
(b) Turn the ignition switch ON and push the hand-held tester or the OBD II scan tool main switch ON.
(c) Read the DTC (See page DI-3).
(d) Clear the DTC (See page DI-3).
(e) Check that MIL does not light up.
Standard: MIL does not light up
OK Repair circuit indicated by output code
(See page DI-36).
NG
2 Check harness and connector (Check for short in wire harness).
(a) Disconnect the E9 ECM connector.
(b) Turn the ignition switch ON.
(c) Check that MIL does not light up.
Standard: MIL does not light up
OK Replace ECM (See page SF-60).
NG
Check and repair harness and connector be-
tween combination meter and ECM (See page
IN-36).

- DIAGNOSTICSENGINE
DI-357
550 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3 Check that MIL lights up.
Check that MIL lights up when turning the ignition switch ON.
Standard: MIL lights up
OK System OK.
NG
4 Inspect combination meter assy (MIL circuit).
See the combination meter troubleshooting on page BE-63.
NG Repair or replace bulb or combination meter as-
sembly.
OK
Check and repair harness and connector be-
tween combination meter and ECM (See page
IN-36).

A20314
Vehicle speed
40 km/h
(25 mph)
Ignition OFF
(a) (b)120 sec.
or more(d)
20 sec.
or more 20 sec.
or more20 sec.
or more20 sec.
or more
20 sec.
or more30 sec. (e)
(f) Idling (c)(d)
(d)
(e)
- DIAGNOSTICSENGINE
DI-109
302 Author
: Date
:
2004 LAND CRUISER (RM1071U)
CONFIRMATION DRIVING PATTERN
(a) Connect the hand-held tester to the DLC3.
(b) Switch the hand-held tester from the ºnormal modeº to the ºcheck modeº (See page
DI-3).
(c) Start the engine and let the engine idle for 120 seconds or more.
(d) Drive the vehicle at 25 mph (40 km/h) or more for 20 seconds or more.
(e) Let the engine idle for 20 seconds or more. Perform steps (d) and (e) at 3 times.
(f) Let the engine idle for 30 seconds.
HINT:
If a malfunction exists, the MIL will light up during step (f).
NOTICE:
If the conditions in this test are not strictly followed, detection of the malfunction will not be possible.
If you do not have a hand-held tester, turn the ignition switch OFF after performing steps (c) to (f),
then perform steps (c) to (f) again.
INSPECTION PROCEDURE
HINT:
Hand-held tester only:
The narrowing down the trouble area is possible by performing ACTIVE TEST of the following ºA/F CON-
TROLº (Heated oxygen sensor or another can be distinguished).
(a) Perform ACTIVE TEST by hand-held tester (A/F CONTROL).
HINT:
ºA/F CONTROLº is an ACTIVE TEST which changes the injection volume to -12.5 % or +25 %.
(1) Connect the hand-held tester to the DLC3 on the vehicle.
(2) Turn the ignition switch ON.
(3) Warm up the engine with the engine speed at 2,500 rpm for approximately 90 seconds.
(4) Select the item ºDIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / A/F CONTROLº.
(5) Perform ºA/F CONTROLº with the engine in an idle condition (press the right or left button).
RESULT:
Heated oxygen sensor reacts in accordance with increase and decrease of injection volume
+25% " rich output: More than 0.5 V
-12.5% " lean output: Less than 0.4 V

A20316
Vehicle speed
40 km/h
(25 mph)
IG SW OFFOnce
40 sec.
or more
60 sec.
or more10 sec.Twice
40 sec.
or more12 times
40 sec.
or more
10 sec. 10 sec.
(
1)(
3)
(
4)
Idling(
2)(
3)
(
4)(
3)
(
4)
- DIAGNOSTICSENGINE
DI-141
334 Author
: Date
:
2004 LAND CRUISER (RM1071U)
Rear HO2S element monitor
If all the values ($81, $84, $85 and $87) are out of the standard values, the ECM interprets this as a malfunc-
tion.
TEST IDDescription of TEST DATAConversion FactorUnit
$81
Percentage of monitoring time
when the HO2S voltage is less
than 0.05 V
Multiply 0.3906%
$84
Percentage of monitoring time
when the HO2S voltage is more
than 0.7 V
Multiply 0.3906%
$85Time when the HO2S voltage is
0.45 V or moreMultiply 0.2621sec.
$87
Percentage of monitoring time
when the HO2S voltage is 0.45 V
or more
Multiply 0.3906%
WIRING DIAGRAM
Refer to DTC P0031 on page DI-49.
CONFIRMATION DRIVING PATTERN
1. Connect the hand-held tester to the DLC3. (
1)
2. Switch the hand-held tester from the normal mode to the check mode (See page DI-3). (
1)
3. Start the engine and let the engine idle for 60 seconds or more. (
2)
4. Drive the vehicle at 40 km/h (25 mph) or more for 40 seconds or more. (
3)
5. Let the engine idle for 10 seconds or more. (
4)
6. Perform steps 4. and 5. for 12 times.
HINT:
If a malfunction exists, the MIL will light up on the multi-information display during step 6.
NOTICE:
If the conditions in this test are not strictly followed, a malfunction detection will not occur. If you do
not have a hand-held tester, turn the ignition switch OFF after performing steps from 3 to 6, then per-
form steps from 3 to 6 again.

FI7132
Engine Speed
2,500 - 3,000 rpm
Idling
IG SW OFF(1)
Time Warmed up 3 min. or so Check (2)(3)
(4)
FI6514
OX Signal Waveform (Oscilloscope)
1.0 V
0 V
200 msec./Division DI-218
- DIAGNOSTICSENGINE
411 Author
: Date
:
CONFIRMATION ENGINE RACING PATTERN
(a) Connect the hand-held tester to the DLC3, or connect the probe of the oscilloscope between terminals
OXL1, OXL2, OXR1, OXR2 and E1 of the ECM connector.
(b) Start the engine and warm it up with all accessories switched OFF until engine coolant temperature
is stable.
(c) Race the engine at 2,500 - 3,000 rpm for about 3 minutes.
(d) After confirming that the waveform of the heated oxygen sensor (bank 1, 2 sensor 1 (OX1A, OX2A)),
oscillate around 0.5 V during feedback to the ECM, check the waveform of the heated oxygen sensor
(bank 1, 2 sensor 2 (OX1B, OX2B)).
HINT:
If there is a malfunction in the system, the waveform of the
heated oxygen sensor (bank 1, 2 sensor 2 (OX1B, OX2B)) is
almost the same as that of the heated oxygen sensor (bank 1,
2 sensor 1 (OX1A, OX2A)) on the left.
There are some cases where, even though a malfunction ex-
ists, the MIL may either light up or not light up.