![2007 MY LX470 [08/2006 - ]; SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION: TS and CG Terminal Circuit](../../../../stylegraphics/info.gif "2007 MY LX470 [08/2006 - ]; SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION: TS and CG Terminal Circuit")
- Steering angle sensor
- Suspension control ECU
- Wire harness
| Last Modified: 7-3-2017 | 6.8:8.0.40 | Doc ID: RM000001CU3004X |
| Model Year Start: 2007 | Model: LX470 | Prod Date Range: [08/2006 - ] |
| Title: SUSPENSION CONTROL: ACTIVE HEIGHT CONTROL SUSPENSION: TEST MODE PROCEDURE; 2007 MY LX470 [08/2006 - ] | ||
TEST MODE PROCEDURE
1. INPUT SIGNAL CHECK (Using SST check wire)
HINT:
This function checks if signals from the steering sensor, stop light switch, etc. are input normally to the ECU.
(a) In case of not using the intelligent tester:
Check the input signal.
(1) Turn the ignition switch OFF.
(2) Set each of the check items in the table below to the condition in Operation (A).
(3) Using SST, connect terminals 12 (TS) and 4 (CG) of DLC3.
SST: 09843-18040
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(4) Turn the ignition switch ON. HINT:
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(5) Each of the check items is set to the condition in Operation (B).
HINT:
When operation of the check items, the height control OFF indicator light comes on for 1 second.
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Check Item |
Operation (A) |
Operation (B) |
|---|---|---|
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Steering angle sensor signal |
Steering wheel straight ahead |
Turn the steering wheel 36° or more |
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Stop light switch signal |
OFF (Brake pedal not depressed) |
ON (Brake pedal depressed) |
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Door courtesy switch signal |
ON (Each door opened) |
OFF (All doors closed) |
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Height control switch signal |
Vehicle height is in NORMAL position |
Vehicle height is in HIGH and LOW position |
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Damping mode select switch signal |
Damping mode select switch is in NORMAL position |
Turn damping mode select switch COMFORT to SPORT 2 both ways once |
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Height control switch signal |
OFF (Height control switch not pushed) |
ON (Height control switch pushed) OFF (Height control switch released) |
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L4 position switch signal |
Transfer shift lever is in H4 position |
Shift transfer shift lever to L4 position |
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Center differential lock position switch signal |
Center differential lock switch OFF (Not pushed) |
Center differential lock switch ON to OFF (Pushed and released) |
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Vehicle speed sensor signal |
Vehicle is in stationary condition |
Vehicle speed 20 km/h (12 mph) or higher |
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(6) Using SST, connect terminal 13 (TC) and 4 (CG) of DLC3. SST: 09843-18040 HINT: This should be done while you connect terminals TS and CG. |
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(7) Read the test DTC output by the height control OFF indicator light. HINT:
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(8) Check the malfunction using the DTC code in the table below.
(9) To exit from the input signal check mode, turn the ignition switch OFF, disconnect SST from the DLC3 and then turn the ignition switch ON.
SST: 09843-18040
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(b) In case of using the intelligent tester: (1) Turn the ignition switch OFF. (2) Set each of the check items in the table below to the condition in Operation (A) in the table above. (3) Hook up the intelligent tester to the DLC3. (4) Turn the ignition switch ON. (5) Select the SIGNAL CHECK mode on the intelligent tester. (6) Each of the check items is set to the condition in Operation (B) in the table above. HINT: Individual checking of each signal can be performed. (7) Read the DTC by following prompts on the tester screen. HINT: Refer to the intelligent tester operator's manual for further details. |
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2. DTC OF INPUT SIGNAL CHECK
If a DTC code is displayed during the test DTC check, check the circuit listed for that code.
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DTC No. |
Detection Item |
Trouble Area |
See Page |
|---|---|---|---|
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C1781/81 |
Steering angle sensor circuit malfunction |
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C1782/82 |
Stop light switch circuit malfunction |
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C1783/83 |
Door courtesy switch circuit malfunction |
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C1786/86 |
Height select switch circuit malfunction |
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C1787/87 |
Damping mode select switch circuit malfunction |
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C1788/88 |
Height control switch circuit malfunction |
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C1789/89 |
L4 position switch circuit malfunction |
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C1794/94 |
Front speed sensor RH circuit malfunction |
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C1795/95 |
Front speed sensor LH circuit malfunction |
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C1796/96 |
Center differential lock position switch circuit malfunction |
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3. DAMPING FORCE CONTROLLING CONDITION CHECK
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(a) Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3. SST: 09843-18020 |
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(b) Turn the ignition switch ON.
HINT:
In this condition, the damping force control actuator position becomes 1 position.
(c) Starting from the above mentioned position, as the brake pedal is depressed, the damping force control actuator position increases (1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 10 → 11 → 12 → 13 → 14 → 15 → 16). At this time, bounce the vehicle and check that the shock absorber is becoming harder.
HINT:
- To hold the damping force control actuator at a specific position, adjust it to the position using the above mentioned procedure then increase the vehicle speed to over 5 km/h (3 mph).
- After that the damping force control actuator position does not change until the ignition switch is turned OFF.
- If the damping force control actuator does not operate, inspect the damping force control actuator circuit and suspension control ECU.
4. HEIGHT CONTROL OPERATION TEST (ACTIVE TEST)
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(a) Using SST, connect terminals 12 (TS) and 4 (CG) of the DLC3. SST: 09843-18040 |
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(b) Push the DOWN button of the height select switch 5 times or more within 5 seconds after starting the engine. HINT: At this time the height control OFF indicator light flashes at 0.25 second intervals. |
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(c) By operating each switch in the following table, check the operation of the height control of each wheel.
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Vehicle Movement |
Damping mode select switch |
Height control switch |
Height select switch |
|---|---|---|---|
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Front wheels up |
COMFORT mode |
- |
Push UP button |
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Rear wheels up |
COMFORT mode |
Push and hold |
Push UP button |
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Front wheels down |
COMFORT mode |
- |
Push DOWN button |
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Rear wheels down |
COMFORT mode |
Push and hold |
Push DOWN button |
NOTICE:
Do not raise the vehicle height higher than the HI position when raising it with the active test.
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