For 1990-2009 cars

Step | Action | Values | Yes | No
--- | --- | --- | --- | ---
1 | Inspect fuses EF20 and EF21. Is any fuse open? | -- | Go to Step 2 | Go to Step 3
2 |

1. Inspect for a short circuit and repair it, if necessary.
2. Replace the fuse.

Is the repair complete?

--

System OK

--

3 |

1. Turn the ignition ON.
2. Measure the voltage at fuse EF20 and EF21.

Does the battery voltage available at these fuses measure within the specified range?

11-14 V

Go to Step 4

Go to Step 7

4 |

1. Turn the hazard lamp switch ON.
2. Remove each of the inoperative lamps from its socket.
3. Test each lamp socket positive terminal with a voltmeter.

Does the battery voltage pulsing at the turn signal, hazard lamp socket positive terminal measure within the specified range?

11-14 V

Go to Step 5

Go to Step 9

5 | At each bulb socket, use an ohmmeter to measure the ground circuit. Is the resistance equal to the specified value? | 0 Ω | Go to Step 6 | Go to Step 8
6 | Replace any faulty turn signal/hazard bulbs. Is the repair complete? | -- | System OK | --
7 | Repair the power supply circuit to fuses. Is the repair complete? | -- | System OK | --
8 | Repair the open ground circuit. Is the repair complete? | -- | System OK | --
9 |

1. Disconnect the hazard switch connector.
2. Turn the ignition ON.
3. Measure for voltage at terminal 8.

Does the battery voltage available at terminal 8 measure within the specified range?

11-14 V

Go to Step 10

Go to Step 12

10 |

1. Remove the hazard switch.
2. Turn the hazard switch to the OFF position.
3. Inspect for continuity between terminals 7 and 8.
4. Turn the hazard switch ON.
5. Inspect for continuity between terminals 7 and 8.

Do both tests show the specified value?

0 Ω

System OK

Go to Step 11

11 | Replace the faulty hazard switch. Is the repair complete? | -- | System OK | --
12 | Repair the open circuit between the hazard switch and the fuses EF20 and EF21. Is the repair complete? | -- | System OK | --