Toyota Sienna Service Manual: On-vehicle inspection
1. INSPECT MASS AIR FLOW METE
NOTICE:
- Perform the mass air flow (MAF) meter inspection by following the procedures below.
- Only replace the MAF meter when the MAF value in the DATA LIST (with the engine stopped) are not within the normal operating range or there is foreign matter on the MAF meter platinum hot wire (heater).
- Read the values using the intelligent tester (MAF).
NOTICE:
- Perform the inspection with the vehicle indoors and on a level surface.
- Perform the inspection of the MAF meter while it is installed to the air cleaner case (installed to the vehicle).
- During the test, do not use the exhaust air duct to perform suction on the exhaust pipe.
- Turn the ignition switch to the ON position (do not start the engine).
- Turn the tester on.
- Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / PRIMARY / MAF.
- Wait 30 seconds, and read the values on the intelligent tester.
- Standard condition: Less than 0.70 g/s If the result is not as specified, replace the MAF meter.
- If the result is within the specified range, inspect the cause of the extremely rich or lean air fuel ratio.
Mass air flow meter
Components
...
Removal
1. REMOVE MASS AIR FLOW METER
Disconnect the mass air flow meter connector.
Remove the 2 screws and mass air flow meter.
...
Other materials:
Removal
HINT:
On the LH side, use the same procedures as on the RH side.
1. REMOVE FRONT DOOR SCUFF PLATE RH
Using a screwdriver, disengage the 3 clips and 2
claws, and remove the scuff plate.
HINT:
Tape the screwdriver tip before use.
2. REMOVE FRONT DOOR SCUFF PLATE LH
3. REMOVE REAR DOO ...
Ignition Coil "A" Primary
HINT:
These DTCs indicate malfunctions relating to the primary circuit.
If DTC P0351 is set, check the No. 1 ignition coil with igniter circuit.
If DTC P0352 is set, check the No. 2 ignition coil with igniter circuit.
If DTC P0353 is set, check the No. 3 ignition coil with igniter circ ...
Steering Pad Switch Circuit
DESCRIPTION
This circuit sends an operation signal from the steering pad switch to the
radio receiver.
If there is an open in the circuit, the navigation system cannot be operated
using the steering pad switch.
If there is a short in the circuit, the resulting condition is the same as if ...
