Toyota RAV4 (XA40) 2013-2018 Service Manual: Check and replace ecu
Notice:
- The connector should not be disconnected from the ecu. Perform the inspection from the backside of the connector on the wire harness side.
- When no measuring condition is specified, perform the inspection with the engine stopped and the ignition switch on.
- Check that the connectors are fully seated. Check for loose, corroded or broken wires.
- First, check the ecu ground circuit. If it is faulty,
repair it. If it is normal, the ecu could be faulty.
Temporarily replace the ecu with a normally functioning one and check if the problem symptoms occur. If the problem symptoms disappear, replace the original ecu.
- Measure the resistance between the ecu
ground terminal and body ground.
Standard resistance: Below 1 ù
- Disconnect the ecu connector. Check the ground terminal on the ecu side and wire harness side for bending, corrosion or foreign matter. Lastly, check the contact pressure of the female terminals.
Check for short circuit
If the wire harness is ground shorted (fig. 5), Locate
the section by conducting a resistance check with
the body ground (below).
Check the resistance with the body ground.
Disconne ...
Terms
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Other materials:
On-vehicle inspection
Check steering pad assembly (vehicle not involved in collision and
airbag not deployed)
Perform a diagnostic system check (see page rs-
49).
With the steering pad (with airbag) installed on the
vehicle, perform a visual check:
check for cuts, cracks or discoloration on the
...
Inside vehicle
General maintenance
Performing the following maintenance checks on the vehicle
is the owner's responsibility. The owner may perform the
maintenance or take the vehicle to a service center. Check
the parts of the vehicle described below on a daily basis. In
most cases, special tools are not requ ...
Diagnostic trouble code chart (2006/01- )
Hint:
When the air conditioning system functions properly, dtc
b1400/00 is output.
Hint:
*1: Dtc b1422/22 (compressor lock sensor circuit) is
indicated only for a currently occurring malfunction for 2grfe.
*2: Compressor and pulley for 2az-fe, compressor and
magnetic clutch for 2gr-fe ...
