The occupant detection sensor (front seat cushion pad (front passenger seat)) detects if the front passenger seat is occupied and sends signals to the combination meter assembly. The front seat inner belt assembly (front passenger seat) detects the passenger seat belt condition and sends signals to the combination meter assembly. After receiving the signals from the occupant detection sensor (front seat cushion pad (front passenger seat)) and front seat inner belt assembly (front passenger seat), the seat belt warning light on the combination meter assembly will blink or go off.
The occupant detection sensor (front seat cushion pad (front passenger seat)) detects if the passenger seat is occupied and sends signals to the combination meter assembly. The front seat inner belt assembly (front passenger seat) detects the passenger seat belt condition and sends signals to the combination meter assembly. After receiving the signals from the occupant detection sensor (front seat cushion pad (front passenger seat)) and front seat inner belt assembly (front center seat), the seat belt warning light on the combination meter assembly will blink or go off.
for Separate Seat Type:
for Fixed Bench Seat Type:
for Sliding Bench Seat Type:
for Wagon:
The seat belt warning system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
The seat belt warning light on the combination meter assembly is used for the driver seat, front passenger seat and front center seat (w/ Front Center Seat Belt Warning). Check that the operation of the seat belt warning light is normal first.
If the seat belt warning light does not operate for the driver seat, front passenger seat and front center seat (w/ Front Center Seat Belt Warning), replace the combination meter assembly.
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Passenger Buckle / Occupant Detection Warning Switch | Front passenger seat belt buckle switch and occupant detection sensor signal | OFF or ON | OFF: Front passenger seat belt fastened
ON: Front passenger seat belt not fastened |
Perform the inspection while sitting in the front passenger side seat. |
| CTR Seat Buckle / Occupant Detection Warning Switch | Front center seat belt buckle switch and occupant detection sensor signal | OFF or ON | OFF: Front center seat belt fastened
ON: Front center seat belt not fastened |
·
w/ Front Center Seat Belt Warning ·
Perform the inspection while sitting in the front center seat. |
| Tester Display |
|---|
| Passenger Buckle / Occupant Detection Warning Switch |
| CTR Seat Buckle / Occupant Detection Warning Switch |
ON or OFF appears on the GTS screen according to each seat belt condition.
| Result | Proceed to |
|---|---|
| OK | A |
| NG (Passenger Buckle / Occupant Detection Warning Switch) (for Separate Seat Type) | B |
| NG (Passenger Buckle / Occupant Detection Warning Switch) (for Fixed Bench Seat Type) | C |
| NG (Passenger Buckle / Occupant Detection Warning Switch) (for Sliding Bench Seat Type) | D |
| NG (Passenger Buckle / Occupant Detection Warning Switch) (for Wagon) | E |
| NG (CTR Seat Buckle / Occupant Detection Warning Switch) (w/ Front Center Seat Belt Warning) | F |
A
B
C
D
E
F
Remove the front seat inner belt assembly (for Front Passenger Side).
Inspect the front seat inner belt assembly (for Front Passenger Side).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the front seat cushion pad (occupant detection sensor).
Inspect the front seat cushion pad (occupant detection sensor).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the n1*1 or N27*2 front seat inner belt assembly (for Front Passenger Side) connector.
*1: w/ Front Center Seat Belt Warning
*2: w/o Front Center Seat Belt Warning
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| n1-4 - N23-34 (PBKL) | Always | Below 1 Ω |
| n1-3 - Body ground | Always | Below 1 Ω |
| n1-4 or N23-34 (PBKL) - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N27-6 - N23-34 (PBKL) | Always | Below 1 Ω |
| N27-4 - Body ground | Always | Below 1 Ω |
| N27-6 or N23-34 (PBKL) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the front seat inner belt assembly (for Front Passenger Side).
Inspect the front seat inner belt assembly (for Front Passenger Side).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the front seat cushion pad (occupant detection sensor).
Inspect the front seat cushion pad (occupant detection sensor).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
*1: for LHD
*2: for RHD
Disconnect the m6*1 n6*2 front seat inner belt assembly (for Front Passenger Side) connector.
Disconnect the m5*1 n5*2 front seat cushion pad (occupant detection sensor) connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| m6-2 - m5-3 | Always | Below 1 Ω |
| m6-1 - m5-1 | Always | Below 1 Ω |
| m6-2 or m5-3 - Body ground | Always | 10 kΩ or higher |
| m6-1 or m5-1 - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| n6-2 - n5-3 | Always | Below 1 Ω |
| n6-1 - n5-1 | Always | Below 1 Ω |
| n6-2 or n5-3 - Body ground | Always | 10 kΩ or higher |
| n6-1 or n5-1 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the N25*1 or N27*2 front seat inner belt assembly (for Front Passenger Side) connector.
*1: for LHD
*2: for RHD
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N25-6 - N23-34 (PBKL) | Always | Below 1 Ω |
| N25-4 - Body ground | Always | Below 1 Ω |
| N25-6 or N23-34 (PBKL) - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N27-6 - N23-34 (PBKL) | Always | Below 1 Ω |
| N27-4 - Body ground | Always | Below 1 Ω |
| N27-6 or N23-34 (PBKL) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the front seat inner belt assembly (for Front Passenger Side).
Inspect the front seat inner belt assembly (for Front Passenger Side).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the front seat cushion pad (occupant detection sensor).
Inspect the front seat cushion pad (occupant detection sensor).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the N25*1 or N27*2 front seat inner belt assembly (for Front Passenger Side) connector.
*1: for LHD
*2: for RHD
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N25-6 - N23-34 (PBKL) | Always | Below 1 Ω |
| N25-4 - Body ground | Always | Below 1 Ω |
| N25-6 or N23-34 (PBKL) - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N27-6 - N23-34 (PBKL) | Always | Below 1 Ω |
| N27-4 - Body ground | Always | Below 1 Ω |
| N27-6 or N23-34 (PBKL) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the front seat inner belt assembly (for Front Passenger Side).
Inspect the front seat inner belt assembly (for Front Passenger Side).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the front seat cushion pad (occupant detection sensor).
Inspect the front seat cushion pad (occupant detection sensor).
| Result | Proceed to |
|---|---|
| OK (for LHD) | A |
| OK (for RHD) | B |
| NG | C |
A
B
C
Disconnect the m1*1 or N182*2 front seat inner belt assembly (for Front Passenger Side) connector.
*1: w/ Front Center Seat Belt Warning
*2: w/o Front Center Seat Belt Warning
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| m1-4 - N23-34 (PBKL) | Always | Below 1 Ω |
| m1-3 - Body ground | Always | Below 1 Ω |
| m1-4 or N23-34 (PBKL) - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N182-14 - N23-34 (PBKL) | Always | Below 1 Ω |
| N182-15 - Body ground | Always | Below 1 Ω |
| N182-14 or N23-34 (PBKL) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the n1*1 or N184*2 front seat inner belt assembly (for Front Passenger Side) connector.
*1: w/ Front Center Seat Belt Warning
*2: w/o Front Center Seat Belt Warning
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| n1-4 - N23-34 (PBKL) | Always | Below 1 Ω |
| n1-3 - Body ground | Always | Below 1 Ω |
| n1-4 or N23-34 (PBKL) - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N184-14 - N23-34 (PBKL) | Always | Below 1 Ω |
| N184-15 - Body ground | Always | Below 1 Ω |
| N184-14 or N23-34 (PBKL) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the front center seat inner belt assembly.
Inspect the front center seat inner belt assembly.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the front seat inner belt assembly (for Front Passenger Side).
Inspect the front seat inner belt assembly (for Front Passenger Side).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Remove the front seat cushion pad (occupant detection sensor).
Inspect the front seat cushion pad (occupant detection sensor).
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the N25*1 or N27*2 front seat inner belt assembly (for Front Passenger Side) connector.
*1: for LHD
*2: for RHD
Disconnect the N23 combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N25-3 - N23-20 (P/SB) | Always | Below 1 Ω |
| N25-1 - Body ground | Always | Below 1 Ω |
| N25-3 or N23-20 (P/SB) - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| N27-3 - N23-20 (P/SB) | Always | Below 1 Ω |
| N27-1 - Body ground | Always | Below 1 Ω |
| N27-3 or N23-20 (P/SB) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG