Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT STEERING PAD SWITCH ASSEMBLY

Disconnect the radio receiver assembly R2 or R6 connector.

Measure the resistance according to the values in the table below.

Fig 1: Identifying R2 Or R6 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Resistance

RESISTANCE SPECIFIED CONDITION RESISTANCE SPECIFIED CONDITION

Tester connection

Condition

Specified condition

SW1 (R6-7) - SWG (R6-6) ⁽¹⁾

No switch is pushed

Approx. 100 kΩ

SW1 (R6-7) - SWG (R6-6) ⁽¹⁾

SEEK+ switch: pushed

Approx. 0 Ω

SW1 (R6-7) - SWG (R6-6) ⁽¹⁾

SEEK- switch: pushed

Approx. 0.3 kΩ

SW1 (R6-7) - SWG (R6-6) ⁽¹⁾

VOL+ switch: pushed

Approx. 1 kΩ

SW1 (R6-7) - SWG (R6-6) ⁽¹⁾

VOL- switch: pushed

Approx. 3.2 kΩ

SW2 (R6-8) - SWG (R6-6) ⁽¹⁾

No switch is pushed

Approx. 100 kΩ

SW2 (R6-8) - SWG (R6-6) ⁽¹⁾

MODE switch: pushed

Approx. 0 Ω

SW1 (R2-7) - GND (R2-6) ⁽²⁾

No switch is pushed

Approx. 100 kΩ

SW1 (R2-7) - GND (R2-6) ⁽²⁾

SEEK+ switch: pushed

Approx. 0 Ω

SW1 (R2-7) - GND (R2-6) ⁽²⁾

SEEK- switch: pushed

Approx. 0.3 kΩ

SW1 (R2-7) - GND (R2-6) ⁽²⁾

VOL+ switch: pushed

Approx. 1 kΩ

SW1 (R2-7) - GND (R2-6) ⁽²⁾

VOL- switch: pushed

Approx. 3.2 kΩ

SW2 (R2-8) - GND (R2-6) ⁽²⁾

No switch is pushed

Approx. 100 kΩ

SW2 (R2-8) - GND (R2-6) ⁽²⁾

MODE switch: pushed

Approx. 0 Ω

⁽¹⁾	Separate Type Amplifier

⁽²⁾	Built-in Type Amplifier

NG: Go to step 2

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

INSPECT STEERING PAD SWITCH ASSEMBLY

Disconnect the steering pad switch assembly connector.

Fig 2: Disconnecting Steering Pad Switch Assembly Connect
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the values in the table below.

Resistance

RESISTANCE SPECIFIED CONDITION RESISTANCE SPECIFIED CONDITION

Tester connection	Condition	Specified condition
AU1 (12) - EAU (10)	No switch is pushed	Approx. 100 kΩ
AU1 (12) - EAU (10)	SEEK+ switch: pushed	Approx. 0 Ω
AU1 (12) - EAU (10)	SEEK- switch: pushed	Approx. 0.3 kΩ
AU1 (12) - EAU (10)	VOL+ switch: pushed	Approx. 1 kΩ
AU1 (12) - EAU (10)	VOL- switch: pushed	Approx. 3.2 kΩ
AU2 (11) - EAU (10)	No switch is pushed	Approx. 100 kΩ
AU2 (11) - EAU (10)	MODE switch: pushed	Approx. 0 Ω

NG: REPLACE STEERING PAD SWITCH ASSEMBLY

OK: GO TO NEXT STEP

INSPECT SPIRAL CABLE SUB-ASSEMBLY

Disconnect the connectors from the spiral cable subassembly.

Measure the resistance according to the values in the table below.

Resistance

INSPECT APPARATUS REFERENCE INSPECT APPARATUS REFERENCE

Tester connection	Specified condition
EAU (C10-10) - EAU (10)	Below 1 Ω
AU1 (C10-12) - AU1 (12)	Below 1 Ω
AU2 (C10-11) - AU2 (11)	Below 1 Ω

Fig 3: Identifying Spiral Cable Sub-Assembly Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE SPIRAL CABLE SUB-ASSEMBLY

OK: GO TO NEXT STEP

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

Disconnect the spiral cable sub-assembly connector.

Measure the resistance according to the values in the table below.

Resistance

VOLTAGE SPECIFIED CONDITION VOLTAGE SPECIFIED CONDITION

Tester connection

Specified condition

SW1 (R6-7) - AU1 (12) ⁽¹⁾

Below 1 Ω

SW2 (R6-8) - AU2 (11) ⁽¹⁾

Below 1 Ω

SWG (R6-6) - EAU (10) ⁽¹⁾

Below 1 Ω

SW1 (R6-7) - Body ground ⁽¹⁾

10 kΩ or higher

SW2 (R6-8) - Body ground ⁽¹⁾

10 kΩ or higher

SWG (R6-6) - Body ground ⁽¹⁾

10 kΩ or higher

SW1 (R2-7) - AU1 (12) ⁽²⁾

Below 1 Ω

SW2 (R2-8) - AU2 (11) ⁽²⁾

Below 1 Ω

GND (R2-6) - EAU (10) ⁽²⁾

Below 1 Ω

SW1 (R2-7) - Body ground ⁽²⁾

10 kΩ or higher

SW2 (R2-8) - Body ground ⁽²⁾

10 kΩ or higher

GND (R2-6) - Body ground ⁽²⁾

10 kΩ or higher

⁽¹⁾	Separate Type Amplifier

⁽²⁾	Built-in Type Amplifier

Fig 4: Identifying Spiral Cable And Radio Receiver Assembly Connector Terminals

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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