Immobilizer Control Unit-Receiver Input Test
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2014 Honda Ridgeline, 2013 Honda Ridgeline, 2012 Honda Ridgeline, 2011 Honda Ridgeline, and 2010 Honda Ridgeline. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- SRS components are located in this area. Review the SRS component locations (see COMPONENT LOCATION INDEX ), and the precautions and procedures (see PRECAUTIONS AND PROCEDURES ) before doing repairs or servicing.
- Before troubleshooting check the No. 7 (7.5 A) and No. 19 (15 A) fuses in the under-dash fuse/relay box.
- Remove the driver's dashboard lower cover (see DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION ).
- Remove the steering column covers (see REMOVAL ).
- Disconnect the 7P connector (A) from the immobilizer control unit-receiver (B).
- Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, Go to step 5.
- Reconnect the connector to the immobilizer control unit-receiver, and do the following input tests:
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, the immobilizer control unit-receiver must be faulty; replace it (see Immobilizer Control Unit-Receiver Replacement ).
TEST CONDITION REFERENCE CHARTCavity Wire (Signal) Test condition Test: Desired result Possible cause if desired result is not obtained 1 BRN/YEL (LG3) In all ignition switch positions Measure voltage to ground:
There should be less than 0.2 V.- Poor ground (G101) or an open in the ground wire
- An open or high resistance in the wire
- Faulty PCM
7 WHT/RED (+B) Under all conditions Measure the voltage to ground:
There should be battery voltage.- Blown No. 7 (7.5 A) fuse in the under-dash fuse/relay box
- An open or high resistance in the wire
6 BLK/GRN (IG1) Ignition switch ON (II) Measure the voltage to ground:
There should be battery voltage.- Blown No. 19 (15 A) fuse in the under-dash fuse/relay box
- An open or high resistance in the wire
2 RED/BLU (IMOCD) (S-NET) PCM, imoes unit, and immobilizer control unit-receiver connectors disconnected Should have continuity between PCM, imoes unit and immobilizer control unit-receiver. Should not have continuity to ground. - Open circuit
- Short to ground in the wire