CHECK AT ECU TERMINAL


RV METER




Terminal No.
 Input/Output
 Signal
symbol
 Terminal voltage (V)
 Harness
discrepancy
 Failure symptom due to harness discrepancy
1 - 5
 -
 -
 -
 -
 -
 -
6
 Input/output
 DATA (ETACS SWS data signal via CAN adapter)
 0 - 12
 Open circuit
 Short circuit
 ·Nighttime dimming of button illumination is not performed.
·Ambient temperature display is not updated to rise.
·Compass display is not updated.
·Drive information display is not updated.
7
 Input/output
 M-DATA (Audio) (M-BUS data signal)
 0 - 5
 Open circuit
 Short circuit
 Audio information is not displayed.
8
 Input/output
 M-CLOCK (Audio) (M-BUS clock signal)
 0 - 5
 Open circuit
Short circuit
 Audio information is not displayed.
9 - 14
 -
 -
 -
 -
 -
 -
15
 Input/output
 K (engine K-line signal via CAN adapter)
 0 - 12
 Open circuit
Short circuit
 Drive information display is not updated.
16
 -
 -
 -
 -
 -
 -
17
 Input/output
 M-BUSY (Audio)
 0 - 5
 Open circuit
 Short circuit
 Audio information is not displayed.
18
 -
 SHIELD-GND (Audio)
 -
 -
 -
 -
19 - 22
 -
 -
 -
 -
 -
 -
23
 Input
EX-TEMP (ambient temperature sensor signal)
 5
 Open circuit
Short circuit
 Ambient temperature is not displayed.
24
 Input
 ILL + (button illmination signal)
 5 or less
 Open circuit
Short circuit
 Button illmination is not lighted.
25
 Input
 ACC (ACC power supply)
 System voltage
 Open circuit
-
 Screen is not displayed. All operations are not possible.
-
 Short circuit
Multi-use fuse is blown.
26
 Input
 +B
 System voltage
 Open circuit
 -
 Screen is not displayed. All operations are not possible.
-
 Short circuit
 Multi-use fuse is blown.
27
 Input
 VSS (Vehicle speed pulse signal)
 0 - 5
 Open circuit
 Short circuit
 Ambient temperature and compass display are not updated.
28
 -
 GND (earth)
 -
 Open circuit
 -
 Screen is not displayed.
29 - 30
 -
 -
 -
 -
 -
 -
31
 -
 GND - TEMP
 -
 Open circuit
 Short circuit
 Ambient temperature is not displayed.
32
 -
 ILL GND (button illmination signal)
 0 - 5
 Open circuit
Short circuit
 Button illmination is not lighted.
33
 Input
 FUEL GAUGE
 0 - 5
 Open circuit
 Short circuit
 "-" is displayed on the possible cruising distance display.
34 - 36
 -
 -
 -
 -
 -
 -

CAN ADAPTER




Terminal No.
 Input/Output
 Signal
symbol
 Terminal voltage (V)
 Harness
discrepancy
 Failure symptom due to harness discrepancy
1
 Input
 ACC (ACC power supply)
 System voltage
 Open circuit
Short circuit
·Nighttime dimming of button illumination is not performed.
·Ambient temperature display is not updated to rise.
·Compass display is not updated.
·Drive information display is not updated.
2
 Input/output
 DATA (ETACS SWS data signal)
 0 - 12
 Open circuit
 Short circuit
 ·Nighttime dimming of button illumination cannot be performed.
·Ambient temperature display is not updated to rise.
·Compass display is not updated.
·Drive information display is not updated.
3
 -
 -
 -
 -
 -
 -
4
 -
 GND (earth)
 -
 Open circuit
 -
 ·Nighttime dimming of button illumination cannot be performed.
·Ambient temperature display is not updated to rise.
·Compass display is not updated.
·Drive information display is not updated.
5
 -
 CAN L
 -
 -
 -
 -
6
 -
 CAN H
 -
 -
 -
 -
7
 -
 -
 -
 -
 -
 -
8
 Intput/output
 K (engine K-line signal)
 0 - 12
 Open circuit
Short circuit
 ·Nighttime dimming of button illumination cannot be performed.
·Ambient temperature display is not updated to rise.
·Compass display is not updated.
·Drive information display is not updated.