Speed Signal Circuit: Procedure

1. Disconnect the S23 amplifier connector.
   Fig 1: Identifying Connector Terminals

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2. Disconnect the C8 meter connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   S23-13 (SPD) - C8-21 (+S)	Below 1 Ω
   S23-13 (SPD) - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Jack up either of the rear wheels.
   Fig 2: Identifying Connector Terminals & Voltage Pulse

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2. Move the shift lever to N.
3. Measure the voltage of the meter connectors.

   Standard voltage

   Tester Connection	Condition	Specified Condition
   C8-21 (+S) - Body ground	Ignition switch ON and turn rear wheel	Voltage is pulsed

NG → See step   3 

NG → PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE