Toyota Pick-ups/Land Cruiser/4Runner 1989-1996

System Diagnosis



Turn the ignition switch ON . Check that the CRUISE indicator light comes on when the cruise control main switch is turned on, and that the indicator light turns off when the main switch is turned off.


If a malfunction occurs in the system during cruise control driving, the ECM cancels the cruise control, and blinks the CRUISE indicator light 5 times to inform the driver of a malfunction. At the same time, the malfunction is stored in the memory as a diagnostic trouble code.

Reading Codes

See Figures 1, 2 and 3

  1. Turn the ignition switch ON .
  3. Using SST 09843-18020 or an equivalent jumper wire, connect terminals TC and E1 of the DLC1. The DLC1 is located under the hood next to the fusebox.
  5. Read the diagnostic trouble code on the CRUISE indicator light. Write the codes down and compare them to the chart.
  7. Turn the ignition OFF .
  9. Disconnect the jumper wire.

Clearing Codes

After completing repairs, the diagnostic code can be cleared by removing the ECM-B fuse for 10 seconds or more. Make sure the ignition switch is OFF . Check that the normal code is displayed after connecting the fuse.

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Fig. Fig. 1: Tc and E1 terminal locations in the DLC1

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Fig. Fig. 2: Blink pattern examples for normal system and codes 11 and 21

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Fig. Fig. 3: Cruise control diagnostic codes