Toyota RAV4 manuals

Toyota Sienna Service Manual: On-vehicle inspection

1. INSPECT BACK WINDOW (DEFOGGER WIRE)

INSPECT BACK WINDOW (DEFOGGER WIRE)

NOTICE:

INSPECT BACK WINDOW (DEFOGGER WIRE)

  1.  Turn the ignition switch ON.
  2.  Turn the defogger switch ON.
  3. Inspect the voltage at the center of each defogger wire, as shown in the illustration.

 

Standard voltage

 

HINT: If there is approximately 10 V, the wire may be broken between the center of the wire and the end on the battery side. If there is no voltage, the wire may be broken between the center of the wire and the end on the ground side.

  1.  Place the voltmeter positive (+) lead against the defogger wire on the battery side.
  2.  Place the voltmeter negative (-) lead with the foil strip against the wire on the ground side.
  3.  Slide the positive (+) lead from the battery side to the ground side.
  4.  The point where the voltmeter deflects from approx 10 V to 0 V is the place where the defogger wire is broken.

HINT: If the defogger wire is not broken, the voltmeter indicates 0 V at the positive (+) end of the defogger wire but gradually increases to about 12 V as the meter probe moves to the other end.

2. INSPECT WIRE HARNESS (FRONT WINDOW DEICER WIRE)

INSPECT WIRE HARNESS

  1.  Inspect the resistance of the deicer wire.

Standard resistance

Standard resistance

If the result is not as specified, replace the window.

Problem symptoms table
WINDOW DEFOGGER SYSTEM Symptom Suspected area w/ Deicer: Front window deicer does not operate. (indicator light ON) FR DEF fuse Front window deicer re ...

Repair
1. REPAIR REAR WINDOW DEFOGGER WIRE  Clean the broken wire tips with grease, wax and silicone remover.  Place the masking tape along the both sides of the wire.  Thoroug ...

Other materials:

Safety information for Safety Connect
Important! Read this information before using Safety Connect. Exposure to radio frequency signals The Safety Connect system installed in your vehicle is a low-power radio transmitter and receiver. It receives and also sends out radio frequency (RF) signals. In August 1996, the Federal Communi ...

Mass or Volume Air Flow Circuit/ Mass or Volume Air Flow Circuit Low Input/ Mass or Volume Air Flow Circuit High Input
DESCRIPTION The Mass Air Flow (MAF) meter is a sensor that measures the amount of air flowing through the throttle valve. The ECM uses this information to determine the fuel injection time and to provide appropriate airfuel ratio. Inside the MAF meter, there is a heated platinum wire which is ...

Control Module Performance
DESCRIPTION The ECM continuously monitors its main and sub CPUs. This self-check ensures that the ECM is functioning properly. If outputs from the CPUs are different and deviate from the standards, the ECM will illuminate the MIL and set a DTC immediately. The ECM also monitors the cru ...

В© 2011-2025 Copyright www.tsienna.net