Retrieving Trouble Codes
WARNING: This page is about a different variant/trim than selected.
- Codes from CC ECU self-diagnostic system are retrieved through Data Link Connector 1 (DLC1). Turn ignition switch to ON position. Locate Black DLC1 on driver's side of engine compartment. Connect jumper wire between DLC1 terminal E1 (Brown wire) and terminal Tc (Yellow/Black wire). See Fig 1. If any trouble code is present, perform test(s) in order given. See CRUISE CONTROL ECU TROUBLE CODE DEFINITION table.
- If no trouble codes are present and CRUISE indicator light begins flashing on and off every .25 seconds, system is normal. No codes are stored in memory. Perform TEST 14 : TROUBLE CODE CIRCUIT under SYSTEM TESTS. If no codes are present, CRUISE indicator light does not flash on and off, and cruise control system malfunction still exists, perform CRUISE CONTROL FUNCTION TEST under TROUBLE SHOOTING.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002 CRUISE CONTROL ECU TROUBLE CODE DEFINITION
| Code No. |
Diagnosis Problem |
Perform Test No. |
| Normal |
Indicator Light Flashes On & Off |
None |
| 11 |
Short In Actuator Motor Circuit |
1 , 2 , , |
| 12 |
Short In Actuator Magnetic Clutch Ckt |
1 , 2 , , 7 , |
| 12 |
Open In Actuator Magnetic Clutch Ckt For 0.8 Second |
1 , 2 , , 7 , |
| 14 |
Open In Actuator Motor Circuit |
1 , 2 , , |
| 14 |
Position Sensor Signal Value Does Not Change When Motor Operates |
1 , 2 , , |
| 15 |
Open In Actuator Motor Circuit |
1 , 2 , , |
| 21 |
Speed Sensor Signal Not Sent When Cruise Control Is Set |
4 , , |
| 23 |
Vehicle Speed Sensor Pulse Abnormal |
4 , , |
| 32 |
Short In Cruise ON-OFF (Main) Switch Ckt |
5 , 6 , , |
| 41 |
Faulty Cruise Control ECU |
, |
| 42 |
Source Voltage Drop |
12 , 13 |
| 51 |
Short In Idle Signal Circuit |
8 , , |