Test Mode Procedure

HINT:

• When entering the test mode, the suspension control ECU sets all the test mode DTCs first.

  After completing the test mode for each check item, the test mode DTCs that are determined to be normal by the suspension control ECU will be erased.

  The test mode DTCs for other check items may not be erased when only a certain signal is inspected.

• When the test mode returns back to the normal mode, all the test mode DTCs will be erased.

1. Turn the engine switch off.
2. Connect the Intelligent tester or Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Turn the tester ON.
5. Enter the following menus:
   1. Intelligent tester - Select: DIAGNOSIS / OBD/ MOBD / CHASSIS / AIR SUSPENSION / SIGNAL CHECK/
   2. Techstream - Select: Chassis / Air suspension / Utility / Signal Check /
6. Read the test mode DTCs by following the prompts on the tester screen.
7. After completing the test mode, disconnect the tester and turn the engine switch off.

1. Turn the engine switch off.
2. Using SST, connect terminal 12 (TS) and 4 (CG) of the DLC3.

   SST 09843-18040 

   Fig 1: Identifying DLC3 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE: Do not connect the wrong terminals, as this will cause parts to be damaged.
3. Turn the engine switch on (IG).
4. Confirm that the absorber control indicator light (SPORT) in the combination meter blinks at 0.125 second intervals.
   Fig 2: Identifying Blinking Pattern

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Using SST, connect terminal 13 (TC) and 4 (CG) of the DLC3.

   SST 09843-18040 

   Fig 3: Identifying DLC3 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   NOTE:

   • Do not disconnect terminals 12 (TS) and 4 (CG).
   • Do not connect the wrong terminals, as this will cause parts to be damaged.
6. Determine the test mode DTC that is output based on the number of times the "HEIGHT HIGH" indicator light blinks.
   Fig 4: Identifying HEIGHT HIGH Indicator Light

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   HINT:

   • If the system is normal, the light blinks at 0.25 second intervals.
   • If a malfunction code is output, refer to the  3 TEST MODE DTC CHART.
   • If there is only 1 malfunction code, the code is displayed, a 4.5 second pause occurs, and then the code repeats. If there is more than 1 malfunction code, a 2.5 second pause occurs between codes, a 4.5 second pause occurs after all the codes are displayed, and then the codes repeat.
   • If there is more than 1 malfunction code, they are displayed in numerical order.
7. Turn the engine switch off.
8. Disconnect SST.

HINT:

When entering test mode, the suspension control ECU stores all the test mode DTCs. If the deletion conditions for a test mode DTC are met, it is deleted.

1. If a malfunction code is displayed during the test mode DTC check, check the circuit listed for that code.
   EST MODE DTC CHART
   
   

   DTC Code	Detection Item	Trouble Area	Deletion Condition
   C1796/96	Front acceleration sensor RH circuit malfunction	Suspension control ECU (built into front acceleration sensor RH)	On level surface, G sensor input is +/-1.96 m/s2 or less
   C1797/97	Front acceleration sensor LH circuit malfunction	Left front acceleration sensor Left front acceleration sensor circuit Suspension control ECU
   C1798/98	Rear acceleration sensor circuit malfunction	Rear acceleration sensor Rear acceleration sensor circuit Suspension control ECU