Remote Keyless Entry System
SYMPTOM CHART
| Symptom | Diagnoses/service procedure | Refer to |
|---|---|---|
| All functions of remote keyless entry system do not operate. | 1. Keyfob battery and function check (use Remote Keyless Entry Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunctioning.
|
Keyfob Battery and Function Circuit Check |
| 2. Check BCM and remote keyless entry receiver. | Remote Keyless Entry Receiver Circuit Check | |
| The new ID of keyfob cannot be entered. | 1. Keyfob battery and function check (use Remote Keyless Entry Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunctioning.
|
Keyfob Battery and Function Circuit Check |
| 2. Key switch (insert) check | Key Switch (BCM Input) Circuit Check | |
| 3a. Door switch check (king cab) | Door Switch Circuit Check [King Cab] | |
| 3b. Door switch check (crew cab) | Door Switch Circuit Check [Crew Cab] | |
| 4. ACC power check | Power Supply and Ground Circuit Check | |
| 5. Replace BCM. | BCM (BODY CONTROL MODULE): REMOVAL AND INSTALLATION | |
| Door lock or unlock does not function. (If the power door lock system does not operate manually, check power door lock system) | 1. Keyfob battery and function check (use Remote Keyless Entry Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunctioning.
|
Door Lock Function: System Diagram [Remote Keyless Entry] |
| 2. Replace BCM. | BCM (BODY CONTROL MODULE): REMOVAL AND INSTALLATION | |
| Hazard and horn reminder does not activate properly when pressing lock or unlock button of keyfob. | 1. Check hazard and horn reminder mode with SDT
NOTE:
Hazard and horn reminder mode can be changed.
First check the hazard and horn reminder mode setting. |
Door Lock Function: System Description [Remote Keyless Entry] |
| 2a. Door switch check (king cab) | Door Switch Circuit Check [King Cab] | |
| 2b. Door switch check (crew cab) | Door Switch Circuit Check [Crew Cab] | |
| 3. Replace BCM. | BCM (BODY CONTROL MODULE): REMOVAL AND INSTALLATION | |
| Hazard reminder does not activate properly when pressing lock or unlock button of keyfob. (Horn reminder OK) | 1. Check hazard reminder mode with SDT
NOTE:
Hazard reminder mode can be changed.
First check the hazard reminder mode setting. |
Door Lock Function: System Description [Remote Keyless Entry] |
| 2. Check hazard function with hazard switch | - | |
| 3. Replace BCM. | BCM (BODY CONTROL MODULE): REMOVAL AND INSTALLATION | |
| Horn reminder does not activate properly when pressing lock or unlock button of keyfob. (Hazard reminder OK) | 1. Check horn reminder mode with SDT
NOTE:
Horn reminder mode can be changed. First check the horn reminder mode setting.
|
Door Lock Function: System Description [Remote Keyless Entry] |
| 2. Check horn function with horn switch | - | |
| 3. IPDM E/R operation check | Horn Function Circuit Check | |
| 4. Replace BCM. | BCM (BODY CONTROL MODULE): REMOVAL AND INSTALLATION | |
| Room lamp and ignition keyhole illumination do not operate properly. | 1. Room lamp operation check | Map Lamp and Ignition Keyhole Illumination Function Circuit Check |
| 2. Ignition keyhole illumination operation check | Map Lamp and Ignition Keyhole Illumination Function Circuit Check | |
| 3a. Door switch check (king cab) | Door Switch Circuit Check [King Cab] | |
| 3b. Door switch check (crew cab) | Door Switch Circuit Check [Crew Cab] | |
| 4. Replace BCM. | BCM (BODY CONTROL MODULE): REMOVAL AND INSTALLATION | |
| Panic alarm (horn and headlamp) does not activate when panic alarm button is continuously pressed. | 1. Keyfob battery and function check (use Remote Keyless Entry Tester J-43241)
NOTE:
If the result of keyfob function check is OK, keyfob is not malfunctioning.
|
Keyfob Battery and Function Circuit Check |
| 2. Key switch (insert) check | Key Switch (BCM Input) Circuit Check | |
| 3. Replace BCM. | BCM (BODY CONTROL MODULE): REMOVAL AND INSTALLATION | |
| Auto door lock operation does not activate properly. (All other remote keyless entry functions OK.) |
1. Check auto door lock operation mode with SDT
NOTE:
Auto door lock operation mode can be changed.
First check the auto door lock operation mode setting. |
Door Lock Function: System Description [Door Lock and Unlock Switch] |
| 2. Replace BCM. | BCM (BODY CONTROL MODULE): REMOVAL AND INSTALLATION |