Toyota Sienna Service Manual: DTC check / clear
NOTICE: All the stored DTCs and freeze frame data are erased if:
- the ECM is changed from normal mode to check mode
or vice versa; or 2) the ignition switch is turned from ON
to ACC or off while in check mode.
Before changing modes, always check and make a note of any DTCs and freeze frame data.
HINT:
- DTCs which are stored in the ECM can be displayed on an intelligent tester. An intelligent tester can display current and pending DTCs.
- Some DTCs are not set if the ECM does not detect the same malfunction again during the second consecutive driving cycle. However, such malfunctions, detected on only one occasion, are stored as pending DTCs.
1. CHECK DTC (Using an intelligent tester)
- Connect the intelligent tester to the DLC3.
- Turn the ignition switch to the ON position.
- Turn the tester ON.
- Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
- Check for the DTC(s) and freeze frame data, and then write them down.
- Check the details of the DTC(s).
2. CLEAR DTC (Using the intelligent tester)
- Connect the intelligent tester to the DLC3.
- Turn the ignition switch to the ON position.
- Turn the tester ON.
- Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CLEAR CODES.
- Press the YES button.
3. CLEAR DTC (Without using an intelligent tester)
- Perform either one of the following operations:
- Disconnect the negative battery cable for more than 1 minute.
- Remove the EFI No. 1 and ETCS fuses from the Relay Block (R/B) located inside the engine compartment for more than 1 minute.
Diagnosis system
1. DESCRIPTION
When troubleshooting OBD II (On-Board
Diagnostics) vehicles, an intelligent tester
(complying with SAE J1987) must be connected to
the DLC3 (Data Link Connector 3) o ...
Freeze frame data
1. DESCRIPTION
The ECM records vehicle and driving condition
information as freeze frame data the moment a DTC
is stored. When troubleshooting, freeze frame data
can be helpful in dete ...
Other materials:
Diagnostic trouble code chart
HINT:
If a malfunction code is displayed during the DTC check,
check the circuit indicated by the DTC. For details of each
code, turn to the page for the respective "DTC Code" in the
DTC chart.
DTC chart of ABS:
DTC chart of VSC:
...
Disassembly
1. REMOVE SIDE DEFROSTER NOZZLE DUCT NO.1
(a) Remove the 2 screws <C> and defroster nozzle
duct No. 1.
2. REMOVE SIDE DEFROSTER NOZZLE DUCT NO.2
(a) Remove the 2 screws <C> and defroster nozzle
duct No. 2.
3. REMOVE DEFROSTER NOZZLE ASSEMBLY
(a) Remove the 4 screws <C> and d ...
Removal
1. DRAIN AUTOMATIC TRANSAXLE FLUID (See page
AX-131)
2. REMOVE NO. 1 TRANSFER CASE PLUG (See page
TF-8)
3. REMOVE TRANSFER DRAIN PLUG
(a) Remove the transfer drain plug, gasket and bleed
the drain transfer oil.
4. REMOVE FRONT WHEEL
5. REMOVE FRONT DRIVE SHAFT ASSEMBLY RH
HINT:
(See page D ...
