Active Check Control Unit Test
Active check control panel is located at bottom of instrument panel. Gauges use variable resistance sending units. A voltage limiter is not used.
When ignition switch is turned on, active check control alarm indicator should flash and BRAKE LIGHTS indicator should illuminate for test purposes. Fault monitoring should then begin.
Circuits must be in use to monitor low beams, rear lights or license lights. Brake lights are monitored only while brake pedal is depressed.
If a fault occurs, alarm indicator flashes appropriate LED indicator lights and panel light illuminates for 5 seconds. Depressing TEST button clears alarm indicator, leaving LED fault indicator on. To test unit, depress TEST button. LED fault indicators and panel lights should illuminate.
To conduct a voltage and resistance test disconnect connector from control unit. Test input signals at disconnected connector. See MAIN CONTROL UNIT VOLTAGE & RESISTANCE CHECKS table below. See Fig 1.
| Pin No "I.D."/Wire Color | Applicable Condition(s) | Test Terminals (_) & (_) Equal Correct Value/Result |
|---|---|---|
| 1 "Pin R" Violet/Gray | Ign. Key R | (1+) & (9-) = B+ Volts |
| 2 "Control Warning Lamp" Brown/Yellow | Ign. ON | (2+) & (9-) = Warning Lamp on Continuously |
| 3 "Not Used" | N/A | N/A |
| 4 "Pin 15" Green/White | Ign. Key ON | (4+) & (9-) = B+ Volts |
| 5 "O2 Sensor" Blue/White | Ign. Key ON | (5-) & (4+) = B+ Volts |
| 6 "Airbag (+)" | All | (6+) & (9-) = B+ Volts |
| 7 "Airbag (-)" | All | (7-) & (4+) = B+ Volts |
| 8 "Seat Belt Warning" Brown/Violet | Ign. Key ON | (8-) & (4+) = B+ Volts |
| 9 "Pin 31" Brown | Ground | (9-) & (15+) = B+ Volts |
| 10 "Not Used" | N/A | N/A |
| 11 "58R" Gray/White | Tail Lights ON | (11+) & (9-) = B+ Volts |
| 12 "58L" Gray/Yellow | Tail Lights ON | (12+) & (9-) = B+ Volts |
| 13 "58KL" Gray/Blue | Lights ON, Bulb Test OK | (13) & (9-) = 4.7 Ohms |
| 14 "Not Used" | N/A | N/A |
| 15 "Pin 30" Red/White | Positive From Term. "30" | (15+) & (9-) = B+ Volts |
| 16 "Oil Level Static" Blue/Violet | Level & Transmitter OK | (16) & (9-) = Zero Ohms |
| 17 "W" Washer Fluid Brown/Red | Level & Transmitter OK | (17) & (9-) = Zero Ohms |
| 18 "KW" Coolant Brown/Blue | Level & Transmitter OK | (18) & (9-) = Zero Ohms |
| 19 "Not Used" | N/A | N/A |
| 20 "Oil Level Dynamic" White | Level & Transmitter OK | (20) & (9-) = 1 k/ohm |
| 21 "56B Low Beam" | Low Beams ON | (21+) & (9-) = B+ Volts |
| 22 "K Low Beam Indicator" Yellow/Black | Low Beam & Bulb Test OK | (22) & (9-) = Zero Ohms |
| 23 "54Si" Fuse Monitor" | Ign. Key R | (23+) & (9-) = Zero Ohms |
| 24 "54KL Stop Light Indicator" Green/Black | Stop Lights & Bulb Test OK | (24) & (9-) = 4.7 Ohms |
| 25 "54 Stop Lights" Green/Red | Brakes ON, Lights OK | (25+) & (9-) = B+ Volts |
| 26 "KKL License Light Indicator" Gray/Violet | Lights & Bulb Test OK | (26) & (9-) = 4.7 Ohms |