Special tool
 | Digital multimeter 105-R0051 or equivalent |
 | Electrical probe kit 29-011A |
Inspection and verification
1. Check the customer's complaint.
2. Perform a visual check for obvious signs of mechanical or electrical damage.
Visual Inspection Table
Electrical factors:
- Fuse (And)
- Lamp (s)
- electrical connector (s)
- Wiring harness
3. If an obvious cause of the problem you identified or described by the client is found, eliminate it before proceeding to further actions (if possible).
4. If the problem is not visually obvious, check the symptom and refer to the Symptom Chart.
Symptom table
|
State |
Possible Causes |
Action |
|
• Lack of communication with the powertrain control module (PCM) - car speed output signal (with xenon headlights) |
•Electrical circuit • Xenon headlight control module / headlight range sensor •Powertrain control module (PCM) |
• If any trouble codes are found (DTC), check the system using WDS and proceed as directed by this instrument. CLEAR fault memory and CHECK system for correct operation. |
|
• Lack of communication with the general electronic modular (GEM) (with xenon headlights) |
• Data bus (ISO 9141) • Xenon headlight control module / headlight range sensor •Common electronic module (GEM) |
• For more information, see Section 418-00. |
|
• Both types of headlights do not work (near and far light) |
•Fuse (And) •Electrical circuit (And) •Central electrical junction box (CJB) |
• Go to PINPOINT TEST H |
|
•Dipped headlights do not work |
•Fuse (And) •Electrical circuit (And) • Relay for daytime running lights (DRL) • Low beam relay •Light switch •Battery electrical junction box (BJB) |
• Go to PINPOINT TEST I |
|
•High beam headlights not working |
•Electrical circuit (And) • high beam relay •Multifunction switch |
• Go to PINPOINT TEST J |
|
• One low beam headlight does not work (high beam headlights OK) |
•Fuse •Electrical circuit (And) •Headlight |
• Go to PINPOINT TEST K |
|
• One high beam headlight does not work (low beam headlights OK) |
•Fuse •Electrical circuit (And) •Headlight |
• Go to PINPOINT TEST L |
|
• Headlights are constantly on |
•Electrical circuit (And) • Relay low beam headlights • High beam relay • Relay cleaning headlights •Light switch •Multifunction switch • Xenon headlight control module / headlight range sensor •Dashboard |
• Go to PINPOINT TEST M |
|
• The headlight signaling function does not work |
•Electrical circuit (And) •Multifunction switch |
• Go to PINPOINT TEST N |
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