Millenia
- Locate CPU unit behind left kick panel. Leave CPU connector attached. Using DVOM, measure voltage at specified terminals of CPU connector (backprobe connector). (Scheme 4) See appropriate CPU CONNECTOR PIN VOLTAGES & CONTINUITY table. Disconnect CPU connector and check continuity at specified terminals.
- If voltage or continuity are not as specified, check related components and wiring harnesses. If related components and wiring harnesses are okay, but system is still not functioning properly, replace CPU. See «CENTRAL PROCESSING UNIT (CPU)»(ref-5323-S06160423452000081400000) under REMOVAL & INSTALLATION.
Scheme 4
| Terminal | Specification Or Condition |
|---|
| A (Hood Switch) (1) |
| Hood Closed | No Continuity |
| Hood Open | Continuity |
| B (Starter Cut Relay), Constant (2) | Battery Voltage |
| C (10-Amp RADIO Fuse), Constant (2) | Battery Voltage |
| D | Not Used |
| E (Rear Door Switch) (1) |
| Rear Doors Closed | No Continuity |
| Any Rear Door Open | Continuity |
| F (Horn Relay) (2) |
| Horn Sounding | No Voltage |
| Other | Battery Voltage |
| G (CPU Ground), Constant (1) | Continuity |
| H (Key Reminder Switch) (2) |
| Key Inserted | Battery Voltage |
| Key Removed | No Voltage |
| I | Not Used |
| J (15-Amp ROOM Fuse), Constant (2) | Battery Voltage |
| K (Interior & Spot Light) (2) |
| Switch In Door Position | Battery Voltage |
| Other | No Voltage |
| L (TNS Relay) (2) |
| Headlights On | Battery Voltage |
| Other | No Voltage |
| N (15-Amp METER Fuse), Constant (2) | Battery Voltage |
| O | Not Used |
| P | Not Used |
| (1) Check continuity with ignition off and CPU connector disconnected. (2) Measure voltage with CPU connector connected and ignition on, unless specified otherwise. |
| (1) | Check continuity with ignition off and CPU connector disconnected. |
| (2) | Measure voltage with CPU connector connected and ignition on, unless specified otherwise. |
CPU CONNECTOR PIN VOLTAGES & CONTINUITY (CONNECTOR "A")
| Terminal | Specification Or Condition |
|---|
| 1A | Not Used |
| 1B (Trunk Key Cylinder Switch) (1) |
| Locked | No Continuity |
| Unlocked | Continuity |
| 1C (Headlight Relay) (2) |
| Headlights Off | Battery Voltage |
| Headlights On | No Voltage |
| 1D (Trunk Compartment Light Switch) (2) |
| Trunk Lid Closed | Battery Voltage |
| Trunk Lid Open | No Voltage |
| 1E (Flasher Unit) (2) |
| Hazard Switch Off | Battery Voltage |
| Hazard Switch On | No Voltage |
| 1F | Not Used |
| 1G (Door Lock Timer Unit) (2) |
| 0.4 Sec. After Door Locked | No Voltage |
| Other | Battery Voltage |
| 1H | Not Used |
| 1I (Door Lock Timer Unit) (2) |
| 0.4 Sec. After Door Unlocked | No Voltage |
| Other | Battery Voltage |
| 1J | Not Used |
| 1K | Not Used |
| 1L (Fog Light Relay) (2) |
| Fog Light Switch On | No Voltage |
| Fog Light Switch Off | Battery Voltage |
| 1M (Fog Light Switch - On) (1) |
| Fog Light Switch Pushed | Continuity |
| Fog Light Switch Released | No Continuity |
| 1N (Fog Light Switch - Off) (1) |
| Fog Light Switch Pushed | Continuity |
| Fog Light Switch Released | No Continuity |
| 1O | Not Used |
| 1P (Keyless Unit), Not Operating (2) | 5 Volts |
| (1) Check continuity with ignition off and CPU connector disconnected. (2) Measure voltage with CPU connector connected and ignition on, unless specified otherwise. |
| (1) | Check continuity with ignition off and CPU connector disconnected. |
| (2) | Measure voltage with CPU connector connected and ignition on, unless specified otherwise. |
CPU CONNECTOR PIN VOLTAGES & CONTINUITY (CONNECTOR "B")
| Terminal | Specification Or Condition |
|---|
| 2A (Key Interlock Solenoid), Ignition On (2) |
| Selector In "R" Position | No Voltage |
| Selector In "P" Position | Battery Voltage |
| 2B (Key Interlock Solenoid), Ignition On (2) |
| Selector In "P" Position | Battery Voltage |
| Selector Not In "P" Position | No Voltage |
| 2C ("P" Range Switch), Ignition On (2) |
| Selector In "P" Position | 5 Volts |
| Selector Not In "P" Position | No Voltage |
| 2D (Passenger's Door Switch) (1) |
| Door Closed | No Continuity |
| Door Open | Continuity |
| 2E | Not Used |
| 2F | Not Used |
| 2G (Trunk Lid Opener Relay) (2) |
| .27 Sec. After TRUNK Pressed | No Voltage |
| Other | Battery Voltage |
| 2H (Driver's Door Lock Link Switch) (2) |
| Locked | 5 Volts |
| Unlocked | No Voltage |
| 2L (Door Lock Switch) (2) |
| Locked | 2.5 Volts |
| Unlocked (3) | No Voltage |
| Other | 5 Volts |
| 2M (Security Light) (2) |
| Light Off | Battery Voltage |
| Light On | No Voltage |
| 2N | Not Used |
| 2O | Not Used |
| 2P (Passenger's Door Key Cylinder Switch) (2) |
| Locked | 2.5 Volts |
| Unlocked (3) | No Voltage |
| Other | 5 Volts |
| 2Q | Not Used |
| 2R (Driver's Door Key Cylinder Switch) (2) |
| Locked | 2.5 Volts |
| Unlocked (3) | No Voltage |
| Other | 5 Volts |
| 2S | Not Used |
| 2T (Driver's Door Switch) (1) |
| Door Closed | No Continuity |
| Door Open | Continuity |
| (1) Check continuity with ignition off and CPU connector disconnected. (2) Measure voltage with CPU connector connected and ignition on, unless specified otherwise. (3) Hold key cylinder in UNLOCKED position. |
| (1) | Check continuity with ignition off and CPU connector disconnected. |
| (2) | Measure voltage with CPU connector connected and ignition on, unless specified otherwise. |
| (3) | Hold key cylinder in UNLOCKED position. |
CPU CONNECTOR PIN VOLTAGES & CONTINUITY (CONNECTOR "C")
| Terminal | Specification Or Condition |
|---|
| 3A (Parking Brake Switch) (1) |
| Parking Brake On | Continuity |
| Parking Brake Released | No Continuity |
| 3B (Keyless Unit), Not Operating (2) | 1.28 K/Ohms |
| 3C (Door Lock Timer Unit) (2) |
| .4 Sec. After UNLOCK (Driver) Pressed | No Voltage |
| Other | Battery Voltage |
| 3D | Not Used |
| 3E (DRL Relay) (2) |
| Parking Brake On | Battery Voltage |
| Parking Brake Released | No Voltage |
| 3F (Tilt Switch), Ignition On (2) |
| Auto Switch On | Continuity |
| Auto Switch Off | No Continuity |
| 3G (Tilt Relay), Ignition On (2) |
| Manual Switch In Up Position | No Voltage |
| Other | Battery Voltage |
| 3H (Tilt Switch), Ignition On (2) |
| Manual Switch In Up Position | Continuity |
| Manual Switch In Down Position | Continuity |
| Other | No Continuity |
| 3I (Tilt Relay), Ignition On (2) |
| Manual Switch In Down Position | No Voltage |
| Other | Battery Voltage |
| 3J (Tilt Sensor), Ignition On (2) | .8-1.2 K/Ohms |
| 3K (Tilt Sensor), Ignition On (2) | .28-.91 K/Ohms |
| 3L (Tilt Sensor), Ignition On (2) | No Voltage |
| (1) Check continuity with ignition off and CPU connector disconnected. (2) Measure voltage with CPU connector connected and ignition on, unless specified otherwise. |
| (1) | Check continuity with ignition off and CPU connector disconnected. |
| (2) | Measure voltage with CPU connector connected and ignition on, unless specified otherwise. |
CPU CONNECTOR PIN VOLTAGES & CONTINUITY (CONNECTOR "D")
626
- Locate CPU unit behind left kick panel. Leave CPU connector attached. Using DVOM, measure voltage at specified terminals of CPU connector (backprobe connector). (Scheme 5)through (Scheme 8). See appropriate CPU CONNECTOR PIN VOLTAGES & CONTINUITY table. Disconnect CPU connector and check continuity at specified terminals.
- If voltage measurements or continuity are not as specified, check related components and wiring harnesses. If related components and wiring harnesses are okay, but system is still not functioning properly, replace CPU. See «CENTRAL PROCESSING UNIT (CPU)»(ref-5323-S06160423452000081400000) under REMOVAL & INSTALLATION.
Scheme 5
Scheme 6
Scheme 7
Scheme 8
| Terminal | Specification Or Condition |
|---|
| 1A (Trunk Light Switch) (1) |
| Trunk Open | Battery Voltage |
| Trunk Closed | No Voltage |
| 1B (Key Reminder Switch) (1) |
| Key Inserted | No Voltage |
| Key Removed | Battery Voltage |
| 1C (15-Amp RADIO Fuse) (1) |
| ACC Or ON Position | Battery Voltage |
| LOCK Position | No Voltage |
| 1D (Brake Warning Light), Ignition On (1) |
| Brake Fluid Level Below MIN | No Voltage |
| Brake Fluid Level Above MIN | Battery Voltage |
| 1E (Rear Defroster Light), Ignition On (1) |
| ON Position | Battery Voltage |
| ACC Or LOCK Position | No Voltage |
| 1F (Interior Light) (1) |
| Switch In DOOR Position | Battery Voltage |
| Switch In ON Or OFF Position | No Voltage |
| 1G (CPU Ground), Constant (2) | Continuity |
| 1H (Door Ajar Light) (1) |
| ON Position | Battery Voltage |
| ACC Or LOCK Position | No Voltage |
| 1I (Door Switch) (2) |
| All Doors Closed | No Continuity |
| Any Door Open | Continuity |
| 1J (15-Amp ROOM Fuse), Constant (1) | Battery Voltage |
| 1K (Door Lock Switch) (1) |
| Locked Or Unlocked | Continuity |
| Released | No Continuity |
| 1L | Not Used |
| 1M (10-Amp METER Fuse) (1) |
| ON Position | Battery Voltage |
| ACC Or LOCK Position | No Voltage |
| 1N (Rear Defroster Switch) (1) |
| Switch Pushed | Continuity |
| Switch Released | No Continuity |
| 1O (Seat Belt Light/Buckle Switch), Ignition On (1) |
| Driver's Belt Buckled | Battery Voltage |
| Driver's Belt Unbuckled | No Voltage |
| 1P (Parking Brake Switch) (2) |
| Parking Brake On | Battery Voltage |
| Parking Brake Released | No Voltage |
| (1) Measure voltage with CPU connector connected and ignition on, unless specified otherwise. (2) Check continuity with ignition off and CPU connector disconnected. |
| (1) | Measure voltage with CPU connector connected and ignition on, unless specified otherwise. |
| (2) | Check continuity with ignition off and CPU connector disconnected. |
CPU CONNECTOR PIN VOLTAGES & CONTINUITY (CONNECTOR NO. 1)
| Terminal | Specification Or Condition |
|---|
| 2A (Horn Relay/Horn Switch) (1) |
| Horn Off | Battery Voltage |
| Horn On | No Voltage |
| 2B (Door Lock Timer Unit 1 - Door Lock) (1) |
| While Pressing Switch | (2) |
| Other | Battery Voltage |
| 2C (Security Light) (1) |
| Light Off | Battery Voltage |
| Light On | No Voltage |
| 2D (Door Lock Timer Unit 2 - Trunk Unlock) (1) |
| While Pressing Switch | (2) |
| Other | Battery Voltage |
| 2E (Flasher Unit) (1) |
| Hazard Switch Off | Battery Voltage |
| Hazard Switch On | No Voltage |
| 2F (Door Lock Timer Unit 2 - Driver's Door Unlock) (1) |
| While Pressing Switch | (2) |
| Other | Battery Voltage |
| 2G | Not Used |
| 2H (Door Lock Timer Unit 1 - Door Unlock) (1) |
| While Pressing Switch | (2) |
| Other | Battery Voltage |
| 2I | Not Used |
| 2J (Trunk Key Cylinder Switch) |
| Unlocked (3) | No Voltage |
| Other | 5 Volts |
| 2K | Not Used |
| 2L | Not Used |
| 2M | Not Used |
| 2N | Not Used |
| 2O (Keyless Unit) (1) |
| 0.3 Sec. After LOCK Pressed | 3.5 Volts |
| 0.3 Sec. After UNLOCK Pressed | 1.7 Volts |
| 0.3 Sec. After TRUNK Pressed | No Voltage |
| Other | 5 Volts |
| 2P | Not Used |
| (1) Measure voltage with CPU connector connected and ignition on, unless specified otherwise. (2) While pressing switch, voltage will vary from battery voltage to zero volts and return to battery voltage. (3) Hold key cylinder in UNLOCKED position. |
| (1) | Measure voltage with CPU connector connected and ignition on, unless specified otherwise. |
| (2) | While pressing switch, voltage will vary from battery voltage to zero volts and return to battery voltage. |
| (3) | Hold key cylinder in UNLOCKED position. |
CPU CONNECTOR PIN VOLTAGES & CONTINUITY (CONNECTOR NO. 2)
| Terminal | Specification Or Condition |
|---|
| 3A (Headlight Relay) (1) |
| Headlight Switch (2nd Position) | No Voltage |
| Headlight Switch (OFF or 1st Position) | Battery Voltage |
| 3B (Headlight Switch) (1) |
| Headlight Switch (2nd Position) | No Voltage |
| Headlight Switch (OFF or 1st Position) | 5 Volts |
| 3C (Hood Switch) (1) |
| Hood Closed | 5 Volts |
| Hood Open | No Voltage |
| 3D | Not Used |
| 3F (Rear Defroster Relay), Ignition On (2) |
| Switch On | No Voltage |
| Other | Battery Voltage |
| 3H | Not Used |
| 3I (Headlight Switch/TNS) (1) |
| Headlight Switch Off | 5 Volts |
| Headlight Switch In Park Or On Position | No Voltage |
| 3J (TNS Relay) (1) |
| Headlight Switch Off | Battery Voltage |
| Headlight Switch In Park Or On Position | No Voltage |
| (1) Measure voltage with CPU connector connected and ignition on, unless specified otherwise. (2) Check continuity with ignition off and CPU connector disconnected. |
| (1) | Measure voltage with CPU connector connected and ignition on, unless specified otherwise. |
| (2) | Check continuity with ignition off and CPU connector disconnected. |
CPU CONNECTOR PIN VOLTAGES & CONTINUITY (CONNECTOR NO. 3)
| Terminal | Specification Or Condition |
|---|
| 4A (Left Headlight - Headlights On) (1) |
| Dimmer At Low | No Voltage |
| Dimmer At High | Battery Voltage |
| 4B (CPU Ground), Constant (2) | Continuity |
| 4C (Right Headlight - Headlights On) (1) |
| Dimmer At Low | No Voltage |
| Dimmer At High | Battery Voltage |
| 4D (CPU Ground), Constant (2) | Continuity |
| 4E (Headlight Relay) (1) |
| Headlight Switch At 2nd Position | No Voltage |
| Headlight Switch OFF Or 1st Position | Battery Voltage |
| 4F (Headlight Switch) (1) |
| Headlight Switch At 2nd Position | No Voltage |
| Headlight Switch OFF Or 1st Position | 5 Volts |
| 4H (High Beam Switch) (1) |
| Dimmer At Low | 5 Volts |
| Dimmer At High | No Voltage |
| 4J (Rear Defroster Relay), Ignition On (2) |
| Switch On | No Voltage |
| Other | Battery Voltage |
| 4K (Headlight High Relay - Headlights On) (1) |
| Dimmer At Low | Battery Voltage |
| Dimmer At High | No Voltage |
| 4L | Not Used |
| 4M (Headlight Switch/TNS) (1) |
| Headlight Switch Off | 5 Volts |
| Headlight Switch In 1st Or 2nd Position | No Voltage |
| 4N (TNS Relay) (1) |
| Headlight Switch Off | Battery Voltage |
| Headlight Switch In 1st Or 2nd Position | No Voltage |
| (1) Measure voltage with CPU connector connected and ignition on, unless specified otherwise. (2) Check continuity with ignition off and CPU connector disconnected. |
| (1) | Measure voltage with CPU connector connected and ignition on, unless specified otherwise. |
| (2) | Check continuity with ignition off and CPU connector disconnected. |
CPU CONNECTOR PIN VOLTAGES & CONTINUITY (CONNECTOR NO. 4)
