Introduction
Component testing procedures are provided to determine whether a component is good or bad.
Testing information for each component includes a schematic, a view of the terminal locations and step-by-step test procedures.
Terminal locations are identified by numbers or letters that may be on the component or next to it.
Scheme 1
The component connector MUST BE REMOVED before testing. To test a single circuit within the component, select that circuit under the column "Circuit to test". If you wish to test the complete component, perform all tests.
Connect the tester to the terminals shown in the second column and operate the component as shown in the third column.
Scheme 2
Scheme 3
Component testing procedure
| Circuit to Test | Connect self powered test light or ohm-meter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Headlamp Circuit | 7 and 10 | Off | Open circuit |
| Park | Open circuit | ||
| Low | Closed circuit | ||
| Auto | Open circuit | ||
| Autolamp Circuit | 7 and 4 | Off | Open circuit |
| Park | Open circuit | ||
| Low | Open circuit | ||
| Auto | Closed circuit | ||
| Parking Lamps | 7 and 5 | Off | Open circuit |
| Park | Closed circuit | ||
| Low | Open circuit | ||
| Auto | Open circuit | ||
| Fog Lamps | 7 and 6 | Off | Open circuit |
| Fog | Closed circuit |
MAIN LIGHT SWITCH - COMPONENT TESTING
Scheme 4
Scheme 5
| Circuit to Test | Connect self powered test light or ohm-meter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Interior lamps circuit | 4 and 5 | Interior lamps | Closed circuit |
| Off | Open circuit | ||
| Illumination dimmer resistor | 4 and 6 | Rotate knob clockwise | Ohmmeter will show smoothly increasing resistance |
| Dome defeat circuit | 4 and 2 | Dome switch on | 50 ohms +/- 1% |
| Dome defeat | 100 ohms +/- 29% |
ILLUMINATION DIMMER SWITCH (14A464) - COMPONENT TESTING
Scheme 6
Scheme 7
| Circuit to Test | Connect self powered test light or ohm-meter to terminals | Move key to these positions | A good switch will indicate |
|---|---|---|---|
| Run/Start power circuit | 4 and 1 | Off/Lock | Open circuit |
| Accessory | Open circuit | ||
| Run | Closed circuit | ||
| Start | Closed circuit | ||
| Run/Acc power circuit | 4 and 6 | Off/Lock | Open circuit |
| Accessory | Closed circuit | ||
| Run | Closed circuit | ||
| Start | Open circuit | ||
| Key reminder circuit | 4 and 5 | Key In | Closed circuit |
| Key Out | Open circuit | ||
| Start power circuit | 4 and 7 | Off/Lock | Open circuit |
| Accessory | Open circuit | ||
| Run | Open circuit | ||
| Start | Closed circuit |
IGNITION SWITCH (14489) - COMPONENT TESTING
Scheme 8
Scheme 9
| Circuit to Test | Connect self powered test light or ohm-meter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Washer switch circuit | 13 and 15 | Rear, Washer switch depressed | Closed circuit |
| 14 and 15 | |||
| 13 and 15 | Rear, Washer switch normal | Open circuit | |
| 14 and 15 | |||
| 10 and 15 | Front | Closed circuit | |
| Front | Open circuit | ||
| Rear wiper switch circuit | 13 and 15 | Off | Open circuit |
| On | Closed circuit | ||
| Interval | Closed circuit | ||
| 14 and 15 | Off | Open circuit | |
| On | Closed circuit | ||
| Interval | Open circuit | ||
| Front wiper switch circuit | 16 and 15 | Off | Open circuit |
| Interval 1 | Open circuit | ||
| Interval 2 | Open circuit | ||
| Interval 3 | Open circuit | ||
| Interval 4 | Closed circuit | ||
| Interval 5 | Closed circuit | ||
| Low | Closed circuit | ||
| High | Closed circuit | ||
| 11 and 15 | Off | Open circuit | |
| Interval 1 | Open circuit | ||
| Interval 2 | Closed circuit | ||
| Interval 3 | Closed circuit | ||
| Interval 4 | Closed circuit | ||
| Interval 5 | Open circuit | ||
| Low | Open circuit | ||
| High | Open circuit | ||
| 12 and 15 | Off | Open circuit | |
| Interval 1 | Closed circuit | ||
| Interval 2 | Closed circuit | ||
| Interval 3 | Open circuit | ||
| Interval 4 | Open circuit | ||
| Interval 5 | Open circuit | ||
| Low | Closed circuit | ||
| High | Closed circuit | ||
| 9 and 15 | Off | Open circuit | |
| Low | Open circuit | ||
| High | Closed circuit |
MULTIFUNCTION SWITCH, WIPER/WASHER PORTION - COMPONENT TESTING
Scheme 10
Scheme 11
| Circuit to test | Connect self powered test light or ohm-meter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Switch lock | 2, C504a and 2, C504b | Unlock | Closed circuit |
| Lock | Open circuit | ||
| Left front window circuit | 2, C504a and 5, C504b | Up | Closed circuit |
| Right front window circuit | 2, C504a and 3, C504a | Down | Closed circuit |
| 2, C504a and 8, C504a | Up | Closed circuit | |
| 7, C504b and 8, C504a 7, C504b and 3, C504a | Rest | Closed circuit | |
| Left rear window circuit | 2, C504a and 1, C504b | Up | Closed circuit |
| 2, C504a and 6, C504b | Down | Closed circuit | |
| 7, C504b and 1, C504b 7, C504b and 6, C504b | Rest | Closed circuit | |
| Right rear window circuit | 2, C504a and 8, C504b | Up | Closed circuit |
| 2, C504a and 4, C504b | Down | Closed circuit | |
| 7, C504b and 8, C504b 7, C504b and 4, C504b | Rest | Closed circuit |
MASTER WINDOW CONTROL SWITCH - COMPONENT TESTING
Scheme 12
Scheme 13
| Circuit to Test | Connect self powered test light or ohm-meter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Window control switch | 3 and 5 | Up | Closed circuit |
| 3 and 2 | Down | Closed circuit | |
| 1 and 5 6 and 5 | Rest | Closed circuit |
WINDOW CONTROL SWITCH, PASSENGER SIDE (14489) - COMPONENT TESTING
Scheme 14
Scheme 15
| Circuit to Test | Connect self powered test light or ohm-meter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Window control switch | 3 and 2 | Down | Closed circuit |
| 3 and 5 | Up | Closed circuit | |
| 1 and 2 6 and 5 | Rest | Closed circuit |
WINDOW CONTROL SWITCH, LEFT REAR (14489) - COMPONENT TESTING
Scheme 16
Scheme 17
| Circuit to Test | Connect self powered test light or ohm-meter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Left mirror | Selector switch left | ||
| Up | 6 and 3 1 and 5 | Up | Closed circuit |
| Down | 3 and 5 6 and 1 | Down | Closed circuit |
| Left | 6 and 3 5 and 4 | Left | Closed circuit |
| Right | 6 and 1 3 and 8 | Right | Closed circuit |
| Right mirror | Selector switch right | ||
| Up | 6 and 3 2 and 1 | Up | Closed circuit |
| Down | 3 and 2 6 and 1 | Down | Closed circuit |
| Left | 6 and 3 7 and 1 | Left | Closed circuit |
| Right | 3 and 7 6 and 1 | Right | Closed circuit |
EXTERIOR REAR VIEW MIRROR SWITCH (14A464) - COMPONENT TESTING
Scheme 18
Scheme 19
| Circuit to Test | Connect self powered test light or ohm-meter to terminals | Move switch to these positions | A good switch will indicate |
|---|---|---|---|
| Lock/unlock circuit | 2 and 1 | Rest | Open circuit |
| Lock | Open circuit | ||
| Unlock | Closed circuit | ||
| 4 and 1 | Rest | Open circuit | |
| Lock | Closed circuit | ||
| Unlock | Open circuit |
POWER DOOR LOCK SWITCH - COMPONENT TESTING