Test Mode Procedure

HINT:

By switching from normal mode into test mode, you can inspect the stop light switch and the RH and LH front wheel speed sensors.
When entering the test mode, the stabilizer control ECU sets all the test mode DTCs first.
After completing the input signal operation for each check item, the test mode DTCs that are determined normal by the stabilizer 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 normal mode, all the test mode DTCs will be erased.

TEST MODE (USING SST CHECK WIRE)

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

Make sure that the ignition switch is off.

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

Test mode table

TEST MODE TABLE

Check Item	Operation (A)
Stop light switch signal	OFF (Brake pedal not depressed)
Right front speed sensor signal	Vehicle is stopped
Left front speed sensor signal	Vehicle is stopped

Fig 1: Identifying DLC3 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using SST, connect terminals TS and CG of the DLC3.
SST 09843-18040
Turn the ignition switch to the ON position.
Check that the KDSS indicator light is blinking.
HINT:
- The KDSS indicator light comes on for 2 seconds, then blinks at 0.25 sec. intervals.
- If the KDSS indicator light does not blink, inspect the KDSS indicator light circuit (See DTC C1782/82: STOP LIGHT SWITCH CIRCUIT ) or the TS terminal circuit (See TS AND CG TERMINAL CIRCUIT ).

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

Fig 2: Identifying KDSS Indicator Light

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Test mode table

TEST MODE TABLE

Check Item	Operation (B)
Stop light switch signal	ON (Brake pedal depressed)
Right front speed sensor signal	Vehicle speed 12 mph (20 km/h) or higher
Left front speed sensor signal	Vehicle speed 12 mph (20 km/h) or higher

HINT:

In this step, all signals can be checked together.
When checking each item, the KDSS indicator light should come on for 1 second.

Stop the vehicle.

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 KDSS Indicator Light

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Read the number of blinks of the KDSS indicator light.
HINT:
- As examples, the blinking patterns of a normal system code and trouble code 82.
- If 2 or more malfunctions are indicated at the same time, the lowest numbered code is displayed first.
- When a DTC or normal system code is not output, check the TC terminal circuit (See TC AND CG TERMINAL CIRCUIT ).
Check the malfunction using the test mode DTC table.

DTC of KDSS 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. For details of each code, refer to the information under the respective DTC No. in the table.

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 Wire harness Stabilizer control ECU
C1794/94	Right front speed sensor circuit malfunction	Right front speed sensor Wire harness Skid control ECU assembly Stabilizer control ECU
C1795/95	Left front speed sensor circuit malfunction	Left front speed sensor Wire harness Skid control ECU assembly Stabilizer control ECU

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.

TEST MODE (USING INTELLIGENT TESTER)

Procedure for Test Mode (Input signal check).

Make sure that the ignition switch is off.

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

Test mode table

TEST MODE TABLE

Check Item	Operation (A)
Stop light switch signal	OFF (Brake pedal not depressed)
Right front speed sensor signal	Vehicle is stopped
Left front speed sensor signal	Vehicle is stopped

Fig 6: Connecting Intelligent Tester To DLC3

Connect the intelligent tester to the DLC3.
Turn the ignition switch to the ON position.
Select SIGNAL CHECK mode on the intelligent tester.

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

Test mode table

TEST MODE TABLE

Check Item	Operation (B)
Stop light switch signal	ON (Brake pedal depressed)
Right front speed sensor signal	Vehicle speed 12 mph (20 km/h) or higher
Left front speed sensor signal	Vehicle speed 12 mph (20 km/h) or higher

HINT:

In this step, all signals can be checked together.

Stop the vehicle.
Read the test mode DTCs by following the prompts on the tester screen.
HINT:

Refer to the intelligent tester operator's manual for further details.
Check the malfunction using the code table below. After completing the test mode, disconnect the tester and turn the ignition switch off.

DTC of KDSS 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. For details of each code, refer to the information under the respective DTC No. in the table.

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 Wire harness Stabilizer control ECU
C1794/94	Right front speed sensor circuit malfunction	Right front speed sensor Wire harness Skid control ECU assembly Stabilizer control ECU
C1795/95	Left front speed sensor circuit malfunction	Left front speed sensor Wire harness Skid control ECU assembly Stabilizer control ECU