Test readings, control module connections: Remember
- Note the test readings, use common sense when assessing the results of the tests.
- The specified values are with the ignition in the ON position unless otherwise stated.
- First, make sure the control module is supplied with power and grounded.
- Then, check all the sensor inputs and signals from other systems.
- Finally, check the control module outputs. Remember that the test readings do not indicate whether the actuator is working.
- If any of the test readings is incorrect, use the wiring diagram to determine which lead, connector or component should be checked further.
- The specified test values apply for a Fluke 88/97.
- The test readings % (+) and ms (+) signify the pulse ratio and pulse length of the signal respectively. A test instrument capable of measuring pulse ratio and pulse width must be used. The sign indicates a positive trigger pulse, TRIG+.
> = greater than; < = less than; ~ = alternating current
Pins without further comments have no connection. (LP: LOGIC PROBE P = select pulse; p = visible pulses).
TRIONIC CONTROL MODULE - TERMINALS SPECIFICATION
| Pin | Cable color | Component/function | In/Out | Test conditions | Across | Test reading | See |
|---|---|---|---|---|---|---|---|
| 1 | RD/WH | Main relay, 87 | In | B+ to 1 | <0.5 V | MAIN RELAY | |
| 2 | YE | Oxygen sensor 2, pre-heating | Out | Idling Coolant temperature above 50C | 2--25 | approx. 0.3 V | CLOSED LOOP |
| 3 | Not connected | ||||||
| 4 | RD/WH | Relay. A/C compressor | Out | Idling A/C on |
4--25 | <0.5 V | A/C RELAY |
| 5 | GY/GN | Cruise control B | In | Position ON/OFF | 5--25 | 0 V B+ |
CRUISE CONTROL |
| 6 | BN/RD | Combustion cyl. 3+4 | In | Idling | 6--25 | 15--90 Hz (LP LO HIp) |
IGNITION DISCHARGE MODULE |
| 7 | OG/BK | Trigger 1 | Out | Idling | 7--25 | 7 Hz 14 ms (-) (LP HI LOp) |
IGNITION DISCHARGE MODULE |
| 8 | GY/RD | Trigger 4 | Out | Idling | 8--25 | 7 Hz 14 ms (-) (LP HI LOp) |
IGNITION DISCHARGE MODULE |
| 9 | YE/BU | Pedal position sensor 2 | In | Pedal released Pedal fully depressed |
Use diagnostic tool | 0.355 - 1.010 V 3.945--4.600 V |
PEDAL POSITION SENSOR |
| 10 | BU/BN | Throttle position sensor 2 | In | Throttle closed Throttle fully open |
10--70 | 3.910--4.935 V 0.025--1.070 V |
THROTTLE CONTROL |
| 11 | BY/YE | Manifold absolute pressure sensor | In | 11--22 | 2.1 V at 100 kPa | MANIFOLD ABSOLUTE PRESSURE SENSOR | |
| 12 | Not connected | ||||||
| 13 | BU | Charge air control valve | Out | 13--25 | 32 Hz 2 % (-) 0.5 ms (-) (LP HI LOp) |
TURBO CONTROL | |
| 14 | Not connected | ||||||
| 15 | WH/BK | Intake air temperature | In | 15--22 | Approx. 2.4 V at 20 C | INTAKE AIR TEMPERATURE SENSOR | |
| 16 | Not connected | ||||||
| 17 | YE | Crankshaft position sensor | In | Idling Starter motor cranking |
17--18 | 5--15 V~ approx. 800 Hz LP HI LO 2.0 V~ |
CRANKSHAFT POSITION SENSOR |
| 18 | BK | Crankshaft position sensor | In | Idling Starter motor cranking |
17--18 | 5-10 V~ approx. 800 Hz LP HI LO 2.0 V~ |
CRANKSHAFT POSITION SENSOR |
| 19 | WH | P-bus - | In/Out | 19--25 | 2--3 V (LP PHI LO) |
BUS COMMUNICATION | |
| 20 | Not connected | ||||||
| 21 | Not connected | ||||||
| 22 | BK | Sensor ground | Out | 22--25 | <0.1 V | GROUND | |
| 23 | PK/WH | +30 | In | B+ to 23 | <0.5 | CONTROL MODULE POWER SUPPLY | |
| 24 | OG/GN | Throttle motor - | Out | 48-24 | 600 Hz LP HI LO |
THROTTLE CONTROL | |
| 25 | BK | Power ground | In | 25- B- | <0.1 V | GROUND | |
| 26 | BU/GY | Main relay | Out | 10 s after ignition off | 26-25 | <0.5 V B+ |
MAIN RELAY |
| 27 | YE/GY | EVAP canister purge valve | Out | Idling, warm engine and valve active | 27-25 | 16 Hz (LP HI LOp) |
PURGING |
| 28 | Not connected | ||||||
| 29 | YE/GN | Pedal switch, brake/clutch | In | Automatic position D Brake or clutch pedal depressed |
29-25 | B+ 0 V |
PEDAL POSITION SENSOR |
| 30 | GY | Cruise control C | In | Position ON/OFF | 30-25 | 0 V B+ |
CRUISE CONTROL |
| 31 | Not connected | ||||||
| 32 | Not connected | ||||||
| 33 | GN/WH | Throttle position sensor 1 | In | Throttle closed Throttle fully open |
33--70 | 0.065-1.090 V 3.930-4.775 V |
THROTTLE CONTROL |
| 34 | GN | Oxygen sensor 1 | In | Idling, warm engine, closed loop active | 34--58 | 0--1 V | CLOSED LOOP |
| 35 | BU/WH | Charge air absolute pressure sensor | In | 35--70 | 2.1 V (100 kPa) | CHARGE AIR ABSOLUTE PRESSURE SENSOR | |
| 36 | BU/GN | Relay, limp-home solenoid | Out | 36-25 | B+ | THROTTLE CONTROL | |
| 37 | GN | EVAP close valve | Out | Activate ON | 37-25 | B+ <0.5 V |
PURGING |
| 38 | OG | Knock signal | In | 38-25 | 2.5 V | KNOCK CONTROL | |
| 39 | YE/WH | Temperature sensor, engine coolant | In | 39-22 | 1.0 V (90C) | COOLANT TEMPERATURE SENSOR | |
| 40 | Not connected | ||||||
| 41 | Not connected | ||||||
| 42 | Not connected | ||||||
| 43 | YE/GY | +15 | In | Ignition OFF | 43-25 | B+ <0.5 V |
CONTROL MODULE POWER SUPPLY |
| 44 | GN/WH | Injector 2 | Out | Idling | 44-25 | 7 Hz 2.5-4.5 ms (-) (LP HI LOp) |
INJECTORS |
| 45 | GN/BK | Injector 1 | Out | Idling | 45-25 | 7 Hz 2.5-4.5 ms (-) (LP HI LOp) |
INJECTORS |
| 46 | GY | 5 V | Out | 46-70 | 5 V | 5V SUPPLY | |
| 47 | BK | Power ground | In | 47-B- | <0.1 V | GROUND | |
| 48 | RD/BU | Throttle motor + | Out | 48-24 | 600 Hz LP HI LO |
THROTTLE CONTROL | |
| 49 | BK/WH | Oxygen sensor 1, pre-heating | Out | Idling | 49-25 | approx. 0.3 V | CLOSED LOOP |
| 50 | WH | Fuel pump relay | Out | Starter motor cranking | 50-25 | B+ <0.5 V |
FUEL PUMP RELAY |
| 51 | GN/BU | Control valve, bypass | Out | Rev up engine and release accelerator pedal Acceleration under load |
51-25 | B+ <0.5 V |
CONTROL VALVE, BYPASS |
| 52 | GN | Cruise control A | In | Position ON/OFF | 52-25 | 0 V B+ |
CRUISE CONTROL |
| 53 | YE/BN | Combustion cyl. 1+2 | In | Idling | 53-25 | 15-90 Hz (LP LO HIp) |
NORMAL IGNITION TIMING |
| 54 | GN/YE | Trigger 2 | Out | Idling | 54-25 | 7 Hz 14 ms (-) (LP HI LOp) |