Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The vehicle is equipped with an SRS such as the airbags. Before servicing (including removal or installation of parts), be sure to read the precautionary notice for the airbag system (See SYSTEM DESCRIPTION ).

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - BATTERY)

Disconnect the E62 (*1) or E47 (*2) receiver connector.

Measure the voltage of the wire harness side connector.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
E62-2 (ILL+) - Body ground (*1)	Light control switch TAIL or HEAD	10 to 14 V
E47-10 (ILL+) - Body ground (*2)	Light control switch TAIL or HEAD	10 to 14 V
HINT: 1: for Premium sound models 2: for Standard models

Fig 1: Identifying E62 Or E47 Receiver Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMBINATION METER)

Disconnect the E62 (*1) or E48 (*2) receiver connector.
Disconnect the E19 meter connector.

Measure the resistance of the wire harness side connectors.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
E62-12 (ILL-) - E19-36 (IND1) (*1)	Below 1 Ω
E48-5 (ILL-) - E19-36 (IND1) (*2)	Below 1 Ω
HINT: 1: for Premium sound models 2: for Standard models

Fig 2: Identifying E62 Or E48 Receiver Connector And E19 Meter Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

CONFIRM MODEL

Check if the steering pad switch is equipped on the vehicle.

Result

RESULT CHART

Result	Proceed to
with Steering Pad Switch	A
without Steering Pad Switch	B

B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

A: Go to Next Step

CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - RADIO RECEIVER AND BATTERY)

Disconnect the E7 cable connector.
Disconnect the E49 receiver connector.

Measure the voltage and resistance of the wire harness side connectors.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
E7-12 (IL+2) - Body ground	Light control switch TAIL or HEAD	10 to 14 V

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
E7-4 (EAU) - E49-6 (SWG)	Below 1 Ω

Fig 3: Identifying E7 Cable Connector And E49 Receiver Connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

INSPECT STEERING PAD SWITCH
1. Disconnect the a1 steering pad switch connector.
  
  Fig 4: Inspecting Steering Pad Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Connect the positive (+) lead to terminal ILL+ and the negative (-) lead to terminal EAU of the steering pad switch connector.
3. Check if the illumination for the steering pad switch comes on.
  OK: Illumination for the steering pad switch assembly comes on.
NG: REPLACE STEERING PAD SWITCH

OK: Go to Next Step

INSPECT SPIRAL CABLE SUB-ASSEMBLY

Disconnect the cable connector.

Measure the resistance of the cable.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Specified Condition
E7-4 (EAU) - a1-8 (EAU)	Below 1 Ω
E7-12 (IL+2) - a1-5 (IL+2)	Below 1 Ω

Fig 5: Identifying Spiral Cable Sub-Assembly Connector Pin Terminals

NG: REPLACE SPIRAL CABLE SUB-ASSEMBLY

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE