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All Other Models

  1. Disconnect 6-way connector at amplifier from steering control switch. Check battery voltage at Lt. Blue/Black wire with "ON" switch depressed. Battery voltage should be available from Lt. Blue/Black wire leading from control switches.
  2. Connect an ohmmeter between Lt. Blue/Black wire and ground. Check wire for continuity to ground with "OFF" switch depressed. If resistance higher than one ohm is found, wiring, slip rings or switch is at fault, or steering column may not be properly grounded.
  3. To check steering column ground, connect an ohmmeter between a good body ground and steering column upper flange. Resistance should be less than 1/2 ohm. Rotate steering wheel, and check flexible coupling for resistance less than one ohm. If resistance higher than 3 ohms is noted, clean horn brush contacts and ground brush.
  4. Resistance readings of less than one ohm must be obtained before performing remaining tests. With ohmmeter connected between Lt. Blue/Black wire and ground, depress and hold "SET-ACCEL" switch. Approximately 680 ohms should be indicated on ohmmeter.
  5. Depress and hold "COAST" switch. Approximately 120 ohms should be indicated on ohmmeter. Depress and hold "RESUME" switch. Approximately 2200 ohms should be indicated.
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