Test Mode Procedure

INPUT SIGNAL CHECK (Using SST check wire)

HINT:

This function checks if signals from the stop light switch assembly and the door courtesy light switch, etc. are being input normally to the ECU.

Procedure for Input Signal Check Mode (Test Mode) using SST check wire.

SST 09843-18040

Make sure the ignition switch is OFF.
Set each of the check items to the condition shown as Operation (A) in the test mode table.

Fig 1: Identifying DLC3 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using SST, connect terminals TS and CG of the DLC3.
Turn the ignition switch to the ON position.
Check that the height control OFF indicator light is blinking.
HINT:
- The height control OFF indicator light blinks at 0.125 sec. intervals.
- If the height control OFF indicator light does not blink, inspect the height control manual indicator light circuit (See HEIGHT CONTROL OFF INDICATOR LIGHT CIRCUIT and TS TERMINAL CIRCUIT .

Set each of the check items to the condition shown as Operation (B) in the test mode table.

Fig 2: Identifying Blinking Of Height Control OFF Indicator Light

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

When checking each item, the height control OFF indicator light should comes on for 1 second.

Test mode table

TEST MODE TABLE

Check Item	Operation (A)	Operation (B)
Stop light switch signal	OFF (Brake pedal not depressed)	ON (Brake pedal depressed)
Door courtesy light switch signal	ON (Each door opened)	OFF (All doors closed)
Height control switch signal	-	Press the height control switch "UP" first and then press "DOWN"
Absorber control switch signal	-	Slowly move the absorber control switch "COMFORT" to "SPORT" and "COMFORT"
Height control OFF switch signal	OFF (Height control OFF switch not pushed in)	ON to OFF (Height control OFF switch pushed in and released)
Right front acceleration sensor signal	-	Keep the vehicle still without any vertical movement for 1 second
Left front acceleration sensor signal	-	Keep the vehicle still without any vertical movement for 1 second
Rear acceleration sensor signal	-	Keep the vehicle still without any vertical movement for 1 second
Right front speed sensor signal	Vehicle speed below 20 km/h (12 mph)	Vehicle speed 20 km/h (12 mph) or higher
Left front speed sensor signal	Vehicle speed below 20 km/h (12 mph)	Vehicle speed 20 km/h (12 mph) or higher
Crankshaft position sensor signal	Engine speed below 2,000 rpm	Engine speed 2,000 rpm or higher

Fig 3: Identifying DLC3 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using SST, connect the 3rd terminal of the SST check wire to terminal TC of the DLC3.
SST 09843-18040

Fig 4: Identifying Blinking Of Height Control OFF Indicator Light

Read the number of blinks of the height control OFF indicator light.
HINT:
- As examples, the blinking patterns of a normal system code and code 82 are shown below.
  
  Fig 5: Identifying Blinking Patterns Of Normal System Code & Code 82
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- If 2 or more malfunctions are indicated at the same time, the lowest numbered code is displayed first.
- When a DTC is not output, check the TC TERMINAL CIRCUIT .
Check the malfunction using the test mode DTC table.

Ending the Input Signal Check Mode (Test Mode) using SST check wire.
SST 09843-18040
1. With the ignition switch OFF, disconnect the SST check wire from the terminals of the DLC3 and then turn the ignition switch to the ON position.
Procedure for Sensor Test Mode (Test Mode) using the intelligent tester.
1. Make sure the ignition switch is OFF.
2. Set each of the check items to the condition shown as Operation (A) in the test mode table.
3. Connect the intelligent tester to the DLC3.
4. Turn the ignition switch to the ON position.
5. Select SIGNAL CHECK mode on the intelligent tester.
6. Set each of the check items to the condition shown as Operation (B) in the test mode table (Procedure "A").
  HINT:
  
  In procedure "A", all signals can be checked together.
7. Read the DTCs by following the prompts on the tester screen.
  HINT:
  
  Refer to the intelligent tester operators manual for further details.

DTC of air suspension system test mode (input signal check) function:

If a trouble code is displayed during the test mode DTC check, check the circuit listed for that code.

Test Mode DTC Table

TEST MODE DTC TABLE

DTC No.	Detection Item	Trouble Area
C1782/82	Stop light switch circuit malfunction	Stop light switch assembly Stop light switch circuit Suspension control ECU
C1783/83	Door courtesy switch circuit malfunction	Door courtesy light switch assembly Back door lock assembly (Back door courtesy light switch) Door courtesy light switch circuit Body ECU Suspension control ECU
C1786/86	Height control switch circuit malfunction	Height control switch Height control switch circuit Suspension control ECU
C1787/87	Absorber control switch malfunction	Absorber control switch assembly (Suspension control switch) Absorber control switch circuit Suspension control ECU
C1788/88	Height control OFF switch circuit malfunction	Height control OFF switch (Suspension control switch) Height control OFF switch circuit Suspension control ECU
C1791/91	Open or short circuit in right front acceleration sensor circuit	Acceleration sensor assembly front RH Right front acceleration sensor circuit Suspension control ECU
C1792/92	Open or short circuit in left front acceleration sensor circuit	Suspension control ECU (Acceleration sensor LH is a built-in equipment)
C1793/93	Open or short circuit in rear acceleration sensor circuit	Acceleration sensor rear Rear acceleration sensor circuit Suspension control ECU
C1794/94	Right front speed sensor circuit malfunction	Right front speed sensor Right front speed sensor circuit Skid control ECU assembly Suspension control ECU
C1795/95	Left front speed sensor circuit malfunction	Left front speed sensor Left front speed sensor circuit Skid control ECU assembly Suspension control ECU
C1797/97	Crankshaft position sensor circuit malfunction	Crankshaft position sensor Crankshaft position sensor circuit ECM Suspension control ECU