Steering Pad Switch Circuit: Procedure
- INSPECT STEERING PAD SWITCH ASSEMBLY
- Disconnect the z1 steering pad switch connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Switch Condition Specified Condition 10 (AU1) - 8 (EAU) No switch is pushed 95 to 105 kΩ 10 (AU1) - 8 (EAU) SEEK+ switch: push Below 2.5 Ω 10 (AU1) - 8 (EAU) SEEK- switch: push 312.5 to 345.5 Ω 10 (AU1) - 8 (EAU) VOL+ switch: push 950 to 1050 Ω 10 (AU1) - 8 (EAU) VOL- switch: push 2954.5 to 3265.5 Ω 9 (AU2) - 8 (EAU) No switch is pushed 95 to 105 kΩ 9 (AU2) - 8 (EAU) MODE switch: push Below 2.5 Ω 9 (AU2) - 8 (EAU)
(*1)VOICE switch: push 2954.5 to 3265.5 Ω 9 (AU2) - 8 (EAU)
(*1)ON HOOK switch: push 312.5 to 345.5 Ω 9 (AU2) - 8 (EAU)
(*1)OFF HOOK switch: push 950 to 1050 Ω HINT:
*1: for Separate Type Amplifier System
NG → REPLACE STEERING PAD SWITCH ASSEMBLY
OK: Go to next step
- INSPECT SPIRAL CABLE SUB-ASSEMBLY
- Disconnect the cable connectors.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Specified Condition E7-4 (EAU) - z1-8 (EAU) Below 1 Ω E7-6 (AU1) - z1-10 (AU1) Below 1 Ω E7-5 (AU2) - z1-9 (AU2) Below 1 Ω
NG → REPLACE SPIRAL CABLE SUB-ASSEMBLY
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - RADIO RECEIVER)
- Disconnect the E88 receiver connector.
- Disconnect the E7 cable connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Specified Condition E88-7 (SW1) - E7-6 (AU1) Below 1 Ω E88-8 (SW2) - E7-5 (AU2) Below 1 Ω E88-6 (SWG) - E7-4 (EAU) Below 1 Ω E88-7 (SW1) - Body ground 10 kΩ or higher E88-8 (SW2) - Body ground 10 kΩ or higher E88-6 (SWG) - Body ground 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE