Clock Clock Display Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - MAIN BODY ECU)
INSPECT MAIN BODY ECU
CLOCK - Clock Display Circuit |
DESCRIPTION
The clock assembly uses this circuit to communicate with the main body ECU via the direct line. The main body ECU uses this circuit to send an auto dimmer signal to the clock assembly. The main body ECU detects the position of the light control switch according to the resistance. When the light control switch is set to the HEAD/TAIL position, the resistance between the HEAD/TAIL terminal and body ground is below 1 Ω. When the light control switch is set to the HEAD/TAIL position, the main body ECU sends an auto dimmer signal to the clock assembly. When the clock assembly receives an auto dimmer signal from the main body ECU, the clock assembly causes the clock display to be dimmed. - HINT:
- The maximum clock assembly margin of error is -4 to 4 seconds per day when the temperature is between -20 (-4°F) and 60°C (140°F).
- If the clock assembly error is greater than specified above, replace the clock assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - MAIN BODY ECU) |
Disconnect the E6 and F3 connectors.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
E6-16 (ACAN) - F3-4 (ILL+)
| Always
| Below 1 Ω
|
F3-4 (ILL+) - Body ground
| Always
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
Reconnect the E6 connector.
Measure the voltage according to the value(s) in the table below.
- Standard voltage:
Tester Connection
| Condition
| Specified Condition
|
F3-4 (ILL+) - Body ground
| Turn the ignition switch to the ON position, cover the automatic light control sensor by hand, and light control switch TAIL/HEAD
| 10 to 14 V
|
| OK |
|
|
|
| PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE |
|
