Audio System: Inspection
- w/o Power amplifier:
- CHECK RADIO RECEIVER ASSEMBLY CIRCUIT
Disconnect the connectors from the radio receiver assembly, and check the connector on the wire harness side.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
RADIO RECEIVER ASSEMBLY CIRCUIT INSPECTION - W/O POWER AMPLIFIERTester Connection Condition Specified Condition B3 - Ground Ignition Switch LOCK No Voltage B3 - Ground Ignition Switch ACC Or ON Battery Voltage B4 - Ground Constant Battery Voltage B7 - Ground Constant Continuity If the result is not as specified, inspect the circuits connected to other parts.
- w/ Power amplifier:
- CHECK RADIO RECEIVER ASSEMBLY CIRCUIT
Disconnect the connector from the radio receiver assembly, and check the connector on the wire harness side.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
RADIO RECEIVER ASSEMBLY CIRCUIT INSPECTION - W/ POWER AMPLIFIERTester Connection Condition Specified Condition 16-Ground Constant Continuity 1 - Ground Constant Battery Voltage 11 - Ground Ignition Switch LOCK No Voltage 11 - Ground Ignition Switch ACC Or ON Battery Voltage If the result is not as specified, inspect the circuits connected to other parts.
NOTE: Check the wire harness between the radio receiver assembly and CD auto changer, between the radio receiver assembly and power amplifier. - CHECK POWER AMPLIFIER CIRCUIT
Disconnect the connectors from the power amplifier and check the connector on the wire harness side.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
POWER AMPLIFIER CIRCUIT INSPECTIONTester Connection Condition Specified Condition B3 - Ground Ignition Switch LOCK No Voltage B3 - Ground Ignition Switch ACC Or ON Battery Voltage B4 - Ground Constant Battery Voltage B7 - Ground Constant Continuity If the result is not as specified, inspect the circuits connected to other parts.
- INSPECT STEERING PAD SWITCH
Check the resistance of the steering pad switch.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
STEERING PAD SWITCH INSPECTIONTester Connection Condition Resistance EAU <--> EAU Do Not Switch Position Approx. 100 KΩ AU1 <--> EAU SEEK + Switch: Push 0 Ω AU1 <--> EAU SEEK - Switch: Push Approx. 0.3 Ω AU1 <--> EAU VOL + Switch: Push Approx. 1 KΩ AU1 <--> EAU VOL - Switch: Push Approx. 3.2 KΩ AU2 <--> EAU Do not Switch Position Approx. 100 KΩ AU2 <--> EAU MODE Switch: Push 0 Ω If the resistance is not as specified, replace the switch.