Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - LIGHTING EXT
READ VALUE USING INTELLIGENT TESTER (HEADLIGHT DIMMER SWITCH)
INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY
CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH - MAIN BODY ECU AND BODY GROUND)
LIGHTING SYSTEM - Light Control Switch Circuit
DESCRIPTION
The main body ECU receives light control switch, dimmer switch and front fog light switch information signals from the headlight dimmer switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.READ VALUE USING INTELLIGENT TESTER (HEADLIGHT DIMMER SWITCH) |
Operate the intelligent tester according to the display and select the "Data List".
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
| Dimmer SW | Dimmer switch signal/ON or OFF | ON: Dimmer switch on OFF: Dimmer switch off | - |
| Passing Light SW | Passing light switch signal/ON or OFF | ON: Passing light switch on OFF: Passing light switch off | - |
| Front Fog Light SW | Front fog light switch signal/ON or OFF | ON: Front fog light switch on OFF: Front fog light switch off | - |
| Rear Fog Light SW | Rear fog light switch signal/ON or OFF | ON: Rear fog light switch on OFF: Rear fog light switch off | - |
| Auto Light SW | Auto light switch signal/ON or OFF | ON: Auto light switch on OFF: Auto light switch off | - |
| Head Light SW (Head) | Headlight switch signal/ON or OFF | ON: Headlight switch (Head) on OFF: Headlight switch (Head) off | - |
| Head Light SW (Tail) | Taillight switch signal/ON or OFF | ON: Headlight switch (Tail) on OFF: Headlight switch (Tail) off | - |
- OK:
- When combination light switch operation is performed, the result will be the same as above.
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| OK | ||
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| 2.INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY |
Remove the headlight dimmer switch ().
for LH Side:
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Switch Condition Specified Condition 18 (T) - 12 (EL) Light control switch tail Below 1 Ω 20 (H) - 12 (EL) Light control switch head 18 (T) - 12 (EL) 19 (A) - 12 (EL) Light control switch AUTO 4 (BFG) - 3 (LFG) Front fog light switch on 2 (B) - 3 (LFG) Rear fog light switch on 17 (HF) - 12 (EL) Dimmer switch flash 11 (HU) - 12 (EL) Dimmer switch hi beam
for RH Side:
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 13 (T) - 19 (EL) Light control switch tail Below 1 Ω 11 (H) - 19 (EL) Light control switch head 13 (T) - 19 (EL) 12 (AUTO) - 19 (EL) Light control switch AUTO 7 (BFG) - 8 (LFG) Front fog light switch on 9 (B) - 8 (LFG) Rear fog light switch on 14 (HF) - 19 (EL) Dimmer switch flash 20 (HU) - 19 (EL) Dimmer switch hi beam
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| OK | |
| 3.CHECK HARNESS AND CONNECTOR (HEADLIGHT DIMMER SWITCH - MAIN BODY ECU AND BODY GROUND) |
Disconnect the E14 switch connector.
for LH Side:
Disconnect the E1, E2 and 2D ECU connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E14-4 (BFG) - E2-28 (FFOG) Always Below 1 Ω E14-2 (B) - E2-9 (RFGO) E14-19 (A) - E1-21 (A) E14-20 (H) - E2-17 (HEAD) E14-18 (T) - E1-23 (TAIL) E14-17 (HF) - E1-13 (HF) E14-11 (HU) - 2D-13 (HU) E14-12 (EL) - Body ground E14-3 (LFG) - Body ground E14-4 (BFG) - Body ground Always 10 kΩ or higher E14-2 (B) - Body ground E14-19 (A) - Body ground E14-20 (H) - Body ground E14-18 (T) - Body ground E14-17 (HF) - Body ground E14-11 (HU) - Body ground
for RH Side:
Disconnect the E1, E2 and 2D ECU connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E14-7 (BFG) - E2-28 (FFOG) Always Below 1 Ω E14-9 (B) - E2-9 (RFOG) E14-12 (A) - E1-21 (A) E14-11 (H) - E2-17 (HEAD) E14-13 (T) - E1-23 (TAIL) E14-14 (HF) - E1-13 (HF) E14-20 (HU) - 2D-13 (HU) E14-19 (EL) - Body ground E14-8 (LFG) - Body ground E14-7 (BFG) - Body ground Always 10 kΩ or higher E14-9 (B) - Body ground E14-12 (A) - Body ground E14-11 (H) - Body ground E14-13 (T) - Body ground E14-14 (HF) - Body ground E14-20 (HU) - Body ground
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| OK | ||
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