Toyota Sequoia (2005). Manual - part 60

DID7Y–01

D13872

Hand–Held Tester

DLC3

CAN VIM

–

DIAGNOSTICS

ENGINE

DI–43

237

DTC CHECK / CLEAR

1.

CHECK DTC

DTCs which are stored in the ECM can be displayed with the
hand–held tester or generic OBD II scan tool.
These scan tools can display pending DTCs and current DTCs.
Some DTCs are not stored if the ECM does not detect a mal-
function during consecutive driving. However, the detected
malfunction during once driving is stored as pending DTC.
(a)

Connect the hand–held tester to the CAN VIM. Then con-
nect the CAN VIM to the Data Link Connector 3 (DLC3).

(b)

Turn the ignition switch to ON.

(c)

Enter the following menus: DIAGNOSIS / ENHANCED
OBD II / DTC INFO / CURRENT CODES (or PENDING
CODE).

(d)

Confirm the DTCs and freeze frame data and then write
them down.

(e)

See page 

DI–58

 to confirm the details of the DTCs.

NOTICE:
When simulating a symptom with the hand–held tester to
check the DTCs, use the normal mode. For DTC chart sub-
ject to ”2 trip detection logic”, perform either of the follow-
ing actions.
Turn the ignition switch OFF after the symptom is simulated
once. Then repeat the simulation process again. When the
problem has been simulated twice, the MIL illuminates and the
DTCs are recorded in the ECM.
2.

CLEAR DTC

(a)

Connect the hand–held tester to the CAN VIM. Then con-
nect the CAN VIM to the DLC3.

(b)

Turn the ignition switch to ON.

(c)

Enter the following menus: DIAGNOSIS / ENHANCED
OBD II / DTC INFO / CLEAR CODES and press YES.

DID7Z–01

D13872

Hand–Held Tester

DLC3

CAN VIM

BR3904

0.13 sec.

0.13 sec.

ON

OFF

DI–44

–

DIAGNOSTICS

ENGINE

238

CHECK MODE PROCEDURE

HINT:
Hand–held tester only:
Check mode has a higher sensitivity to detect malfunctions and
can detect malfunctions that normal mode cannot detect.
Check mode can also detect all the malfunctions that normal
mode can detect.

1.

CHECK MODE PROCEDURE

(a)

Make sure that the items below are true.
(1)

Battery positive voltage 11 V or more

(2)

Throttle valve fully closed

(3)

Transmission in the P or N position

(4)

A/C switched OFF

(b)

Turn the ignition switch OFF.

(c)

Connect the hand–held tester to the DLC3.

(d)

Turn the ignition switch ON.

(e)

Change the ECM to check mode with the hand–held tes-
ter. Enter the following menus: DIAGNOSIS / EN-
HANCED OBD II / CHECK MODE. Make sure the MIL
flashes as shown in the illustration.

NOTICE:
All DTCs and freeze frame data recorded will be erased if:
1) the hand–held tester is used to change the ECM from
normal mode to check mode or  vice–versa; or 2) during
check mode, the ignition switch is turned from ON to ACC
or OFF.
(f)

Start the engine. The MIL should turn off after the engine
starts.

(g)

Simulate the conditions of the malfunction described by
the customer.

(h)

After simulating the malfunction conditions, use the
hand–held tester diagnosis selector to check the DTC,
freeze frame data and other data.

(i)

After checking the DTC, inspect the applicable circuit.

2.

CLEAR DTC (Using the hand–held tester)

(a)

Connect the OBD ll scan tool or the hand–held tester to
the DLC3.

(b)

Turn the ignition switch ON.

(c)

Erase DTCs and freeze frame data with the OBD II scan
tool (complying with SAE J1978) or the hand–held tester.
For the hand–held tester: 1) enter the following menus:
DIAGNOSIS / ENHANCED OBD II / DTC INFO / CLEAR
CODES; and 2) press YES. For the OBD II scan tool, see
its instruction manual.

–

DIAGNOSTICS

ENGINE

DI–45

239

3.

CLEAR DTC (Not using the hand–held tester)

(a)

Remove the EFI No. 1 and ETCS fuses from the engine
room J/B for more than 60 seconds, or disconnect the bat-
tery terminal for more than 60 seconds.
After disconnecting the battery terminal, perform the ”INI-
TIALIZE” procedure.

DID80–01

DI–46

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DIAGNOSTICS

ENGINE

240

FAIL–SAFE CHART

If any of the following code is recorded, the ECM enters fail–safe mode.

DTC No.

Fail–Safe Operation

Fail–Safe Deactivation Conditions

P0031

P0032

P0037

P0038

P0051

P0052

P0057

P0058

The heater circuit in which an abnormality is detected is

turned off

Ignition switch OFF

P0100

P0102

P0103

Ignition timing is calculated from engine speed and throttle

angle

”Pass” condition detected

P0110

P0112

P0113

Intake air temperature is fixed at 20°

C

 (68°

F

)

”Pass” condition detected

P0115

P0117

P0118

Engine coolant temperature is fixed at 80°

C

 (176°

F

)

”Pass” condition detected

P0120

P0121

P0122

P0123

P0220

P0222

P0223

P0607

P0657

P2102

P2103

P2111

P2112

P2118

P2119

P2135

If the Electronic Throttle Control System (ETCS) has a mal-
function, the ECM cuts off current to the throttle control
motor. The throttle control valve returns to a predetermined
opening angle (approximately 16

) by the force of the return

spring. The ECM then adjusts the engine output by control-
ling the fuel injection (intermittent fuel–cut) and ignition tim-
ing in accordance with the accelerator pedal opening angle
to enable the vehicle to continue at a minimal speed.
If the accelerator pedal is depressed firmly and slowly, the
vehicle can be driven slowly. If the accelerator pedal is
depressed quickly, the vehicle may speed up and slow
down erratically.

”Pass” condition is detected and then the ignition switch is
turned OFF.

P0325

P0330

Max. timing retardation

Ignition switch OFF

P0351

P0352

P0353

P0354

P0355

P0356

P0357

P0358

Fuel cut

”Pass” condition detected