Inspection and Verification

Visual inspection is an important part of diagnosis. The inspection should be done to locate obvious reasons for customer concern.

When performing visual inspection, check all items for abnormal conditions. Look for such items as bare, broken or disconnected wires. For the speed control to function properly, speed control actuator cable (9A825) (throttle actuator) and throttle linkage should operate freely and smoothly.

Any concerns found by the visual inspection should be corrected before further tests of the speed control system are made. The following items should be inspected.

• If the amber RABS, ABS or 4WABS indicator in the instrument cluster stays lit when the key is in RUN, refer to Section 06-09A or Section 06-09B before continuing with the speed control diagnostics.
• Does the horn (13832) work? If not, check the horn circuit fuse, horn relay and horn circuit wiring.
• Do the stoplamps light when the brake pedal (2455) is depressed? If not, check the stoplamp circuit fuse, rear lamps (13404), wiring and stoplight switch (13480).

Electronic Servo Assembly

Check for unseated connectors at the speed control servo (9C735).

• Look for loose or unseated connector pins.
• Check for broken wires at the connectors.

Actuator Cable

• Misadjusted speed control actuator cable. If misadjustment is suspected, readjust according to procedure above.
• Broken speed control actuator cable.

Speed Control Diagnostic Sequence

NOTE: If amber RABS, ABS or 4WABS light remains ON, refer to Section 06-09A or Section 06-09B.