es350rm2038001-1002q_s0015_739iv_t009g_179_182

1、NS181NAVIGATION NAVIGATION SYSTEMSteering Pad Switch CircuitDESCRIPTIONThis circuit sends an operation signal from the steering pad switch to the radio receiver.If there is an open in the circuit, the audio or navigation system cannot be operated using the steering pad switch.If there is a short in

2、the circuit, the resulting condition is the same as if the switch were continuously depressed. Therefore, the radio receiver or multi-display cannot be operated using the steering pad switch, and the radio receiver or multi-display itself cannot function.WIRING DIAGRAME70E70SW1SWGSW24E30Steering Pad

3、 Switch AssemblyRadio ReceiverSteering Pad Switch LHSpiral Cable10d16 7E30Volume-Volume+Seek-Seek+8d1 6MODE9d15E308E70VoiceOff HookOn HookSteering Pad Switch RHE130453E01AU1EAUAU2NSPECTION PROCEDURENOTICE:The vehicle is equipped with an SRS (Supplemental Restraint System) which includes components s

4、uch as airbags. Before servicing (including removal or tallation of parts), be sure to read the precautionary notice for the Supplemental Restraint System (See page RS-1).PECT RADIO RECEIVER1Wire Harness View (DVD Changer Model): E70 SW2SW1Wire Harness View (CD Changer Model):SWGE70SW2SW1SWGE124071E

5、04(a) Disconnect the radio receiver connector E70.(b) Measure the resistance according to the value(s) in the table below.Standard resistanceTester ConnectionConditionSpecified ConditionSW1 - SWGNo switch is pushedApprox. 100 kWSW1 - SWGSEEK+ switch: pushApprox. 0 WSW1 - SWGSEEK- switch: pushApprox.

6、 0.3 kWSW1 - SWGVOL+ switch: pushApprox. 1 kWSW1 - SWGVOL- switch: pushApprox. 3.1 kWSW2 - SWGNo switch is pushedApprox. 100 kWSW2 - SWGMODE switch: pushApprox. 0 WSW2 - SWGVOICE switch: pushApprox. 3.1 kWSW2 - SWGON HOOK switch: pushApprox. 0.3 kWSW2 - SWGOFF HOOK switch: pushApprox. 1 kWNGGo to st

7、ep 2 NSOKPROCEED TO NEXT CIRCUITPECTION SHOWN IN PROBLEM SYMPTOMS TABLEPECT STEERING PAD SWITCH ASSEMBLY2(a) Disconnect the steering pad switch assembly connector d1.d1AU1EAU AU2DISPE130454E01Standard resistance(b) Measure the resistance according to the value(s) in the table below.OKTester Connecti

8、onConditionSpecified ConditionAU1 - EAUNo switch is pushedApprox. 100 kWAU1 - EAUSEEK+ switch: pushApprox. 0 WAU1 - EAUSEEK- switch: pushApprox. 0.3 kWAU1 - EAUVOL+ switch: pushApprox. 1 kWAU1 - EAUVOL- switch: pushApprox. 3.1 kWAU2 - EAUNo switch is pushedApprox. 100 kWAU2 - EAUMODE switch: pushApp

9、rox. 0 WAU2 - EAUVOICE switch: pushApprox. 3.1 kWAU2 - EAUON HOOK switch: pushApprox. 0.3 kWAU2 - EAUOFF HOOK switch: pushApprox. 1 kWNSNGREPLACE STEERING PAD SWITCH ASSEMBLYPECT SPIRAL CABLE3Steering Pad Switch Side:AU1AU2EAUd1Vehicle Side:AU2E30AU1EAUI039337E43(a) Disconnect the steering pad switc

10、h assembly and spiral cable connectors.(b) Measure the resistance according to the value(s) in the table below.Standard resistanceTester ConnectionSpiral Cable PositionSpecified ConditionEAU - EAUCenterBelow 1 W2.5 rotations to the left2.5 rotations to the rightAU1 - AU1CenterBelow 1 W2.5 rotations to the left2.5 rotations to the rightAU2 - AU2CenterBelow 1 W2.5 rotations to the left2.5 rotations to the rightNOTICE:NSThe spiral cable is an important part of the SRS airbag system. Incorrect removal or tallation of the spiral cable may cause airbag deployment. Be sure to read the page s