Pinout Values and Diagnostic Parameters

LIGHTING SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (BODY ECU)





















*1: w/ Air suspension system
*2: w/o Air suspension system
*3: w/ Step light






(a) Waveform 1
- Gauge set: 5 V/DIV. 5 ms/DIV
- Condition: Ignition switch ON

2. HEADLIGHT BEAM LEVEL CONTROL ECU

















(a) Waveform 1
- Terminal: SPDL - GND, SPDR - GND
- Gauge set: 5 V/DIV. 2 ms/DIV
- Condition: Drive at about 30 km/h (19 mph)





(b) Waveform 2
- Terminal: RH1. RH2. RH3. RH4 - GND LH1. LH2. LH3. LH4 - GND
- Gauge set: 5 V/DIV. 10 ms/DIV
- Condition: The DRL system is on with the engine running or the light control switch is in the HEAD position when the vehicle is stationary or being bounced.
If the value is not within the standard range, some defects on the vehicle side are possible. Inspect the fuse, wire harness and connector.

3. AFS ECU

















*1: w/ Air suspension system
*2: w/o Air suspension system






(a) Waveform 1
- Terminal: SPDL - GND, SPDR - GND
- Gauge set: 5 V/DIV. 2 ms/DIV
- Condition: Drive at about 30 km/h (19 mph)





(b) Waveform 2
- Terminal: LR1+. LR1-. LR2+. LH2- - GND LL1+. LL1-. LL2+. LL2- - GND
- Gauge set: 5 V/DIV. 10 ms / DIV
- Condition: The DRL system is on with the engine running or the light control switch is in the HEAD position when the vehicle is stationary or being bounced.
If the value is not within the standard range, some defects on the vehicle side are possible. Inspect the fuse, wire harness and connector.