LEFT SIDE IMPACT SENSOR 1 INTERNAL 1
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
With the ignition on.
- Set Condition:
The Occupant Restraint Controller (ORC) supplies power to and communicates continuously with each impact sensor via each sensor's signal circuit. The power supply also enables each sensor's self-diagnostic capabilities. If an impact sensor detects an internal fault, it sends the applicable Impact Sensor Internal 1 message to the ORC. The ORC will set this DTC if it receives the Left Side Impact Sensor internal 1 message.
| Possible Causes |
| (R13) LEFT SIDE IMPACT SENSOR 1 SIGNAL CIRCUIT SHORTED TO BATTERY |
| (R13) LEFT SIDE IMPACT SENSOR 1 SIGNAL CIRCUIT SHORTED TO GROUND |
| (R13) LEFT SIDE IMPACT SENSOR 1 SIGNAL CIRCUIT SHORTED TO (R15) LEFT SIDE IMPACT SENSOR 1 GROUND CIRCUIT |
| (R15) LEFT SIDE IMPACT SENSOR 1 GROUND CIRCUIT OPEN |
| (R13) LEFT SIDE IMPACT SENSOR 1 SIGNAL CIRCUIT OPEN |
| LEFT SIDE IMPACT SENSOR 1 |
| ORC |
Diagnostic Test
1. DETERMINE ACTIVE OR STORED DTCNOTE: Ensure that the battery is fully charged.
Turn the ignition on.
SELECT ACTIVE or STORED DTC:
ACTIVE DTC
- Go To 2
STORED DTC
- Go To 8
2. CHECK THE (R13) LEFT SIDE IMPACT SENSOR 1 SIGNAL CIRCUIT AND THE (R15) LEFT SIDE IMPACT SENSOR 1 GROUND CIRCUIT FOR A SHORT TO BATTERY
WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Disconnect the Left side Impact Sensor 1 connector.
Disconnect the ORC connector.
WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.
Measure the voltage of the (R13) Left Side Impact Sensor 1 Signal circuit between the Left Side Impact Sensor 1 connector and ground.
Measure the voltage of the (R15) Left Side Impact Sensor 1 Ground circuit between the Left Side Impact Sensor 1 connector and ground.
Is there any voltage present on either circuit?
Yes
- Repair the circuits with voltage present for a short to battery.
- Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1.
No
- Go To 3
3. CHECK THE (R13) LEFT SIDE IMPACT SENSOR 1 SIGNAL CIRCUIT FOR A SHORT TO GROUND
WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Measure the resistance of the (R13) Left Side Impact Sensor 1 Signal circuit between ground and the Left Side Impact Sensor 1 connector.
Is the resistance below 100K ohms?
Yes
- Repair the (R13) Left Side Impact Sensor 1 Signal circuit for a short to ground.
- Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1.
No
- Go To 4
4. CHECK THE (R13) LEFT SIDE IMPACT SENSOR 1 SIGNAL CIRCUIT FOR A SHORT TO THE (R15) LEFT SIDE IMPACT SENSOR 1 GROUND CIRCUIT
Measure the resistance between the (R13) Left Side Impact Sensor 1 Signal circuit and the (R15) Left Side Impact Sensor 1 Ground circuit at the Left Side Impact Sensor 1 connector.
Is the resistance below 100K ohms?
Yes
- Repair the (R13) Left Side Impact Sensor 1 Signal circuit for the (R15) Left Side Impact Sensor 1 Ground circuit.
- Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1.
No
- Go To 5
5. CHECK THE (R15) LEFT SIDE IMPACT SENSOR 1 GROUND CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
Connect the 8443 Load Tool ORC Adaptor to the ORC connector.
Measure the resistance of the (R15) Left Side Impact Sensor 1 Ground circuit between the Left Side Impact Sensor 1 connector and the 8443 Load Tool ORC Adaptor.
Is the resistance below 1.0 ohm?
Yes
- Go To 6
No
- Repair the (R15) Left Side Impact Sensor 1 Ground circuit for an open or high resistance.
- Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1.
6. CHECK THE (R13) LEFT SIDE IMPACT SENSOR 1 CIRCUIT FOR AN OPEN OR HIGH RESISTANCE
Measure the resistance of the (R13) Left Side Impact Sensor 1 Signal circuit between the Left Side Impact Sensor 1 connector and the 8443 Load Tool ORC Adaptor.
Is the resistance below 1.0 ohm?
Yes
- Go To 7
No
- Repair the (R13) Left Side Impact Sensor 1 Signal circuit for an open or high resistance.
- Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1.
7. CHECK THE LEFT SIDE IMPACT SENSOR 1 OPERATION
Replace the Left Side Impact Sensor 1 in accordance with the Service Information.
Remove any special tools or jumper wires and reconnect all previously disconnected components, except the battery.
WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.
With the scan tool, erase all Airbag System Module DTCs.
Turn the Ignition Off, wait 15 seconds, then turn the Ignition On. Wait one minute before proceeding.
With the scan tool, read active ORC DTCs.
Does the scan tool display: LEFT SIDE IMPACT SENSOR 1 INTERNAL 1?
Yes
WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to take the proper precautions could result in accidental airbag deployment and personal injury or death.
WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
- Replace the ORC in accordance with Service Instructions.
- Perform AIRBAG SYSTEM VERIFICATION TEST - VER 1.
No
- Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1.
8. CHECKING STORED OR INTERMITTENT CODES
NOTE: Diagnose and repair all active codes before diagnosing stored codes. Refer to the Table of Contents in this Section for a complete list of airbag system diagnostic procedures.
With the scan tool, record and erase all Airbag System Module DTCs.
WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Using the wiring diagram/schematic as a guide, inspect the related wiring and connectors for chafed, pierced, pinched, and partially broken wires, and for broken, bent, pushed out, corroded, and contaminated terminals. Repair as necessary.
Reconnect all disconnected components and harness connectors.
WARNING: To avoid personal injury or death, turn the ignition on, then reconnect the battery.
With the scan tool, monitor for active codes while performing the following:
- Wiggle the wiring harness and connectors of the related airbag circuit.
- Continue the test until either a code becomes active or the problem area is isolated.
In the previous steps you have attempted to recreate the conditions responsible for setting the DTC in question / causing the intermittent condition.
Are any ACTIVE DTCs present?
Yes
- Select the appropriate diagnostic procedure from the Table of Contents in this section.
No
- No problem found at this time. Erase all codes before returning the vehicle to the customer.