check engine light TOYOTA SEQUOIA 2001 Service User Guide

B17447
Wire Harness Side:
Stop Light Switch Connector
S14
ST1±STP
E4
± DIAGNOSTICSENGINE
DI±287
481 Author: Date:
2005 SEQUOIA (RM1146U)
4 Check harness and connector between ECM and stop light switch.
PREPARATION:
(a) Disconnect the S14 stop light switch connector.
(b) Disconnect the E4 ECM connector.
CHECK:
Measure the resistance between the wire harness side connec-
tors.
OK:
Standard:
Tester ConnectionSpecified Condition
Stop light switch (S14±1) ± STP (E4±15)Below 1 W
Stop light switch (S14±3) ± ST1±
(E4±16)Below 1 W
Stop light switch (S14±1) or
STP (E4±15) ± Body ground10 kW or higher
Stop light switch (S14±3) or
ST1± (E4±16) ± Body ground10 kW or higher
NG Repair or replace harness or connector.
OK
Replace ECM (See page SF±80).

DI±290
± DIAGNOSTICSENGINE
484 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
HINT:

When the throttle position is slightly opened (the accelerator pedal is slightly depressed) because a
floor carpet is overlapped on the accelerator pedal, or if the accelerator pedal is not fully released, etc.,
DTC P0505 will possibly be detected.

Read freeze frame data using the hand-held tester. Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the
vehicle was running or stopped, if the engine was warmed up or not, if the air±fuel ratio was lean or
rich, as well as other data from the time when a malfunction occurred.
1 Are there any other codes (besides P0505) being output?
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand±held tester main switch ON.
(c) When using hand±held tester, enter the following menu: DIAGNOSIS / ENHANCED OBD II / DTC
INFO / CURRENT CODES.
CHECK:
Read the DTC using the hand±held tester.
RESULT:
Display (DTC Output)Proceed to
P0505A
ºP0505º and other DTCsB
HINT:
If any other codes besides P0505 are output, perform the troubleshooting for those DTCs first.
B Go to relevant DTC chart (See page DI±58).
A
2 Check connection of PCV piping.
NG Repair or replace PCV piping.
OK

B17418W E5
± DIAGNOSTICSENGINE
DI±513
707 Author: Date:
2005 SEQUOIA (RM1146U)
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.
PREPARATION:
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand±held tester main switch ON.
(c) Read the DTC (See page DI±43).
(d) Clear the DTC (See page DI±43).
CHECK:
(a) Check that MIL does not light up.
OK:
Standard: MIL does not light up
OK Repair circuit indicated by output code
(See page DI±58).
NG
2 Check Harness and connector (Check for short in wire harness).
PREPARATION:
(a) Disconnect the E4 ECM connector.
(b) Turn the ignition switch ON.
CHECK:
(a) Check that MIL does not light up.
OK:
Standard: MIL does not light up
OK Replace ECM (See page SF±80).
NG
Check and repair harness and connector be-
tween combination meter and ECM.

DI±514
± DIAGNOSTICSENGINE
708 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check that MIL lights up.
CHECK:
Check that MIL lights up when turning the ignition switch ON.
OK:
Standard: MIL lights up
OK System OK.
NG
4 Inspect combination meter assy (MIL circuit).
See the combination meter troubleshooting on page BE±55.
NG Repair or replace bulb or combination meter as-
sembly.
OK
Check and repair harness and connector be-
tween combination meter and ECM.

DIDIP±01
12345678
9 10111213141516
D13649
DLC3:
CG
TC
D13654
DI±524
± DIAGNOSTICSAUTOMATIC TRANSMISSION
718 Author: Date:
2005 SEQUOIA (RM1146U)
BASIC INSPECTION
1. CHECK FLUID LEVEL
(a) Using SST, create a short±circuit between terminals TC
and CG of the DLC3.
SST 09843±18040
(b) Start the engine and run at idle.

The A/C switch must be turned off.

On models with active height control suspension &
adaptive variable suspension, turn the height con-
trol switch off.
(c) Slowly move the shift lever through all positions from P to
L, and move it back to the P position.
(d) Switch to the fluid temperature detection mode.
Move the shift lever from the N to the D position, or from
D to N, within 1.5 seconds. (Repeat this operation for 6 se-
conds or more.)
OK: The A/T OIL TEMP warning light comes on for 2
seconds and then goes off.
(e) Return the shift lever to the P position and disconnect ter-
minals TC and CG.
(f) Idle the engine to raise oil temperature.
(g) Lift up the vehicle immediately after the meter indicator
light (ATF temperature warning light) comes on.

The A/T OIL TEMP warning light indicates the ATF
temperature according to the following table.
ATF Temp.Less than optimized
temperatureOptimized temperatureMore than optimized
temperature
A/T OIL TEMP warning lightOFFONBlinking

D14137
Refill Plug
Overflow Plug
D14142Control Shaft Lever
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±525
719 Author: Date:
2005 SEQUOIA (RM1146U)
(h) Remove the overflow plug and check the fluid level.
Standard:
When ATF overflowsATF level is higher than specification
(Go to step (k))
When ATF does not overflow
ATF level is equal to or lower than
specification
(Go to step (i))
HINT:

ºOverflowº indicates the condition under which ATF
drains out from the overflow tube.

The capacity of the overflow tube is approximately 3 cc.
If the amount of drained ATF is little, only the fluid remain-
ing in the tube has drained out. This condition is not con-
sidered as ºoverflowº.
(i) Remove the refill plug.
(j) Add ATF through the refill hole until it flows out from the
overflow hole.
Fluid type: Toyota genuine ATF WS
(k) When the draining ATF has become a trickle, install the
overflow plug with a new gasket.
(l) Install the refill plug if removed.
(m) Lower the vehicle.
(n) Turn the ignition switch off to stop the engine.
2. CHECK FLUID CONDITION
If the fluid smells burnt or is black, replace it (see step 6).
3. INSPECT AND ADJUST SHIFT LEVER POSITION
(a) When shifting the shift lever from the N position to other
positions, check that the lever can be shifted smoothly
and accurately to each position and that the position indi-
cator comes on in accordance with the shift lever position.
If the indicator and shift lever position do not match, carry out
the following adjustment procedures.
(1) Remove the nut and disconnect the shift control
cable from the control shaft lever.
(2) Move the control shaft fully rearward.
(3) Return the control shaft lever 2 notches to the N
position.
(4) Set the shift lever to the N position.
(5) Connect the shift control cable and temporarily
install the control shaft lever nut.
(6) While holding the shift lever lightly toward the R
position side, tighten the control shaft lever nut.
Torque: 14.5 N´m (148 kgf´cm, 11 ft´lbf)

D14141
12345678
9 10111213141516
D13649
DLC3:
CG
TC
D13654
DI±532
± DIAGNOSTICSAUTOMATIC TRANSMISSION
726 Author: Date:
2005 SEQUOIA (RM1146U)
(3) Install the overflow plug with a new gasket when the
draining ATF has becomes a trickle.
Torque: 20 NVm (204 kgfVcm, 15 ftVlbf)
(4) Install the refill plug with a new O±ring.
Torque: 39 NVm (400 kgfVcm, 29 ftVlbf)
(5) Lower down the vehicle.
(6) Turn the ignition switch off.
(7) Check for fluid leaks in the transmission.
If there are leaks, it is necessary to repair or replace O±rings,
FIPGs, oil seals, plugs or other related parts.
(d) When adding a minimum amount of fluid: [*4]
(1) Using SST, create a short±circuit between terminals
TC and CG of the DLC3.
SST 09843±18040
(2) Start the engine and run at idle.
NOTICE:
The A/C switch must be turned off.
(3) Slowly move the shift lever from the P to the 2±L
position. Return the shift lever to the P position.
(4) Switch to the fluid temperature detection mode.
Move the shift lever from the N to the D position, or
from D to N, within 1.5 seconds. (Repeat this opera-
tion for 6 seconds or more.)
OK: The A/T OIL TEMP warning light comes on for 2
seconds and then goes off.
(5) Disconnect terminals TC and CG after confirming
the above condition.
(6) Idle the engine to raise the fluid temperature.

D14231
When fluid
temperature
is low: offWhen fluid
temperature
is correct: onWhen fluid
temperature
is high: blinks
D14139Overflow Plug
D14141
D14140
Refill Plug
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±533
727 Author: Date:
2005 SEQUOIA (RM1146U)
(7) Lift up the vehicle immediately after the meter indi-
cator light (ATF temperature warning light) comes
on.
NOTICE:

Add fluid only when the meter indicator light is on.

Perform this procedure while the engine is idling.
(8) Remove the overflow plug. If ATF overflows, pro-
ceed to [*5]. If ATF does not overflow, proceed to
[*6].
HINT:
ºOverflowº indicates the condition under which ATF drains out
from the overflow tube.
(e) When fluid overflows: [*5]
(1) Install the overflow plug with a new gasket when the
draining ATF has become a trickle.
Torque: 20 NVm (204 kgfVcm, 15 ftVlbf)
(2) Install the refill plug with a new O±ring.
Torque: 39 NVm (400 kgfVcm, 29 ftVlbf)
(3) Lower down the vehicle.
(4) Turn the ignition switch off.
(5) Check for fluid leaks in the transmission.
If there are leaks, it is necessary to repair or replace O±rings,
FIPGs, oil seals, plugs or other related parts.
(f) When fluid does not overflow: [*6]
(1) Remove the refill plug.

DIDIQ±01
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±535
729 Author: Date:
2005 SEQUOIA (RM1146U)
ROAD TEST
1. PROBLEM SYMPTOM CONFIRMATION
Based on the result of the customer problem analysis, try to reproduce the symptoms. If the problem is that
the transaxle does not shift up, shift down, or the shift point is too high or too low, conduct the following road
test referring to the automatic shift schedule and simulate the problem symptoms.
2. ROAD TEST
NOTICE:
Perform the test at the normal operating ATF (Automatic Transmission Fluid) temperature: 50 to 80°C
(122 to 176°F).
(a) D position test:
Shift into the D position and fully depress the accelerator pedal and check the following points. Check
up±shift operation.
(1) Check up±shift operation.
Check that 1 " 2, 2 " 3, 3 " 4 and 4 " 5th up±shifts take place, and that the shift points conform
to the automatic shift schedule (See page SS±24).
HINT:
5th Gear Up±shift Prohibition Control

Engine coolant temperature is 55 °C (131 °F) or less and vehicle speed is at 51 km/h (32 mph) or less.
4th Gear Up±shift Prohibition Control

Engine coolant temperature is 40 °C (104 °F) or less and vehicle speed is at 45 km/h (28 mph) or less.
5th Gear Lock±up Prohibition Control

Brake pedal is depressed.

Accelerator pedal is released.

Engine coolant temperature is 60 °C (140 °F) or less.
(2) Check for shift shock and slip.
Check for shock and slip at the 1 " 2, 2 " 3, 3 " 4 and 4 " 5th up±shifts.
(3) Check for abnormal noise and vibration.
Check for abnormal noise and vibration when up±shifting from 1 " 2, 2 " 3, 3 " 4 and 4 " 5
while driving with the shift lever in the D position, and check while driving in the lock±up condition.
HINT:
The check for the cause of abnormal noise and vibration must be done thoroughly as it could also be due
to loss of balance in the differential, torque converter clutch, etc.
(4) Check kick±down operation.
Check vehicle speeds when the 2nd to 1st, 3rd to 2nd, 4th to 3rd, and 5th to 4th kick±downs take
place while driving with the shift lever in the D position. Confirm that each speed is within the
applicable vehicle speed range indicated in the automatic shift schedule (See page SS±24).
(5) Check abnormal shock and slip at kick±down.
(6) Check the lock±up mechanism.

Drive in the D position (5th gear), at a steady speed (lock±up ON).

Lightly depress the accelerator pedal and check that the engine speed does not change
abruptly.
HINT:
If there is a big jump in engine speed, there is no lock±up.

DI±536
± DIAGNOSTICSAUTOMATIC TRANSMISSION
730 Author: Date:
2005 SEQUOIA (RM1146U)
(b) 4 (O/D OFF) position test:
Shift into the 4 (O/D OFF) position and fully depress the accelerator pedal and check the following
points.
(1) Check up±shift operation.
Check that the 1 " 2, 2 " 3 and 3 " 4 up±shifts take place and that the shift point conforms
to the automatic shift schedule (See page SS±24).
HINT:

There is no 5th up±shift in the 4 position.

4th Gear Lock±up Prohibition Control

Brake pedal is depressed.

Accelerator pedal is released.

Engine coolant temperature is 60 °C (140 °F) or less.
(2) Check engine braking.
While driving in the 4 position and 4th gear, release the accelerator pedal and check the engine
braking effect.
(3) Check for abnormal noises during acceleration and deceleration, and for shock at up±shift and
down±shift.
(4) Check the lock±up mechanism.

Drive in 4 position 4th gear, at a steady speed (lock±up ON).

Lightly depress the accelerator pedal and check that the engine speed does not change
abruptly.
HINT:
If there is a big jump in engine speed, there is no lock±up.
(c) 3 position test:
Shift into the 3 position and fully depress the accelerator pedal and check the following points.
(1) Check up±shift operation.
Check that the 1 " 2 and 2 " 3 up±shifts takes place and that the shift point conforms to the
automatic shift schedule (See page SS±24).
HINT:

There is no 4th up±shift and lock±up in the 3 position.

When the 2nd start switch is ON, there is no 1 "2 up±shift and 2 "1 down±shift.
(2) Check engine braking.
While running in the 3 position and 3rd gear, release the accelerator pedal and check the engine
braking effect.
(3) Check for abnormal noises during acceleration and deceleration, and for shock at up±shift and
down±shift.
(d) 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 that the 1 " 2 up±shift takes place and that the shift point conforms to the automatic shift
schedule (See page SS±24).
HINT:

There is no 3rd up±shift and lock±up in the 2 position.

When the 2nd start switch is ON, there is no 1 "2 up±shift and 2 "1 down±shift.