Bus +/- Signals Open From RKE
NOTE:
After making any repairs, perform BODY VERIFICATION TEST under VERIFICATION TESTS.
- Turn ignition off. Remove and inspect fuse No. 1 (RKE) from fuse block. See Figure. If fuse is open, go to next step. If fuse is okay, reinstall fuse and go to step 4.
- Using ohmmeter, check resistance between fuse No. 1 output cavity and ground. If resistance is less than 10 ohms, leave fuse removed and go to next step. If resistance is 10 ohms or more, check for intermittent short to ground.
- Ensure ignition is off. Disconnect 26-pin RKE module connector. See Figure. Using an ohmmeter, check resistance between RKE module connector terminal No. 9, fused B+ circuit (Red/Black wire) and ground. See Fig 1. If resistance is less than 10 ohms, repair short to ground on Red/Black wire and replace fuse. If resistance is 10 ohms or more, replace fuse and RKE module. See REMOTE KEYLESS ENTRY MODULE under REMOVAL & INSTALLATION.
- Remove and inspect CLUSTER fuse No. 10 from fuse block. If fuse is okay, reinstall fuse and go to next step. If fuse is open, repair short to ground on Dark Blue/Black wire between fuse and RKE module.
- Turn ignition off. Disconnect 26-pin RKE module connector. Using an ohmmeter, check resistance between RKE module connector terminal No. 12, ground circuit (Black/Light Green wire) and ground. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open Black/Light Green wire.
- Ensure ignition is off. Disconnect RKE module connector, located under pad in center of instrument panel. Install fuse No. 10 in fuse block. Turn ignition on. Using a voltmeter, check voltage on RKE module connector terminal No. 22, fused ignition switch output start/run circuit (Dark Blue/Black wire). If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair Dark Blue/Black wire.
- Turn ignition off. Using a voltmeter, check voltage on RKE module connector terminal No. 9, fused B+ circuit (Red/Black wire). If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair Red/Black wire.
- Turn ignition off. Connect scan tool to Data Link Connector (DLC). DLC is located on bottom of instrument panel, to left of brake pedal. See Figure. Turn ignition on. Using scan tool, attempt to communicate with other modules. If scan tool does not communicate with other modules, proceed to NO RESPONSE FROM PCI (PCI BUS) test. If scan tool communicates with other modules, go to next step.
- Connect Scope Input Cable (CH7058) to channel one connector on scan tool. Connect Red and Black leads, and Cable-to-Probe Adapter (CH7062) to scope input cable. Using scan tool, select DRB STANDALONE, LAB SCOPE, LIVE, then 12-VOLT SQUARE WAVE. Press F2 for scope. Press F2 again and use down arrow to set voltage range to 20 volts. Press F2 again. Connect Black lead to ground. Connect Red lead to RKE module connector terminal No. 19, PCI bus circuit (Violet/Yellow wire). Turn ignition on. Observe voltage display on scan tool lab scope. If voltage pulses from zero to about 7.5 volts, replace RKE module. See REMOTE KEYLESS ENTRY MODULE under REMOVAL & INSTALLATION. If voltage remains at zero volts, repair open Violet/Yellow wire.