Circuit/System Testing

Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the K132 Pedestrian Alert Sound Control Module. It may take up to 2 minutes for all vehicle systems to power down.
Test for less than 10 Ω between the ground circuit terminal 3 and ground.
- If 10 Ω or greater
1. Ignition OFF.
2. Test for less than 2 Ω in the ground circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, repair the open/high resistance in the ground connection.
- If less than 10 Ω
Verify a test lamp illuminates between the B+ circuit terminal 10 and ground.
- If the test lamp does not illuminate and the circuit fuse is good
1. Ignition OFF.
2. Test for less than 2 Ω in the B+ circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, verify the fuse is not open and there is voltage at the fuse.
- If the test lamp does not illuminate and the circuit fuse is open
1. Ignition OFF.
2. Test for infinite resistance between the B+ circuit and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - If infinite resistance, replace the K132 Pedestrian Alert Sound Control Module.
- If the test lamp illuminates
Ignition ON.
Verify a test lamp illuminates between the ignition circuit terminal 4 and ground.
- If the test lamp does not illuminate and the circuit fuse is good
1. Ignition OFF.
2. Test for less than 2 Ω in the ignition circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, verify the fuse is OK and there is voltage at the fuse.
- If the test lamp does not illuminate and the circuit fuse is open
1. Ignition OFF.
2. Test for infinite resistance between the ignition circuit and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - If infinite resistance, replace the K132 Pedestrian Alert Sound Control Module.
- If the test lamp illuminates
Ignition OFF, connect the harness connector at the K132 Pedestrian Alert Sound Control Module, disconnect the harness connector at the P48 Pedestrian Alert Sound Speaker. Ignition ON,
Test for less than 10 Ω between the low reference circuit terminal 2 and ground.
- If 10 Ω or greater
1. Ignition OFF.
2. Test for less than 2 Ω in the ground circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the ground circuit.
  - If less than 2 Ω, replace the K132 Pedestrian Alert Sound Control Module.
- If less than 10 Ω
Test for 3.5-5.5 V between signal circuit terminal 1 and terminal 2 and low reference.
- If less than 3.5 V
1. Ignition OFF, disconnect the harness connector at the K132 Pedestrian Alert Sound Control Module.
2. Test for infinite resistance between the signal circuit and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - If infinite resistance
3. Test for less than 2 Ω in the signal circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the K132 Pedestrian Alert Sound Control Module.
- If greater than 5.5 V
1. Ignition OFF, disconnect the harness connector at the K132 Pedestrian Alert Sound Control Module. Ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
  - If 1 V or greater, repair the short to voltage on the circuit.
  - If less than 1 V, replace the K132 Pedestrian Alert Sound Control Module.
- If between 3.5-5.5 V
Test or replace the P48 Pedestrian Alert Sound Speaker.
Verify proper operation of the Pedestrian Alert Sound System.
- If the system does not operate properly
  Replace the K132 Pedestrian Alert Sound Control Module.
- If the system operate properly
All OK.