DTC P1698-A: NO CCD/PCI BUS MESSAGE FROM TCM
1. Using scan tool, read Diagnostic Trouble Codes (DTCs). If scan tool display STARTS SINCE SET counter is equal to one or less, go to next step. If scan tool STARTS SINCE SET counter is not equal to one or less, go to step 6.
2. If BUS is not operational, scan tool will display a message on odometer. If odometer displays NO BUS, perform VEHICLE COMMUNICATIONS TEST 15A in appropriate VEHICLE COMMUNICATIONS article in ACCESSORIES & EQUIPMENT. If odometer does not display NO BUS, go to next step.
3. If scan tool also displays DTC P1695-A, go to next step. If scan tool does not display DTC P 1695-A, perform VEHICLE COMMUNICATIONS TEST 12A in appropriate VEHICLE COMMUNICATIONS article in ACCESSORIES & EQUIPMENT.
4. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Using a DVOM, check voltage on PCI BUS circuit at PCM connector terminal No. 59 while turning ignition key to RUN position. See PCM CONNECTOR WIRE IDENTIFICATION table. Verify voltage reading by turning ignition key more than once. If voltage is.4 volts or less after turning ignition on, go to next step. If voltage is more than.4 volts after turning ignition on, replace PCM. Perform TEST VER-2A: ROAD TEST VERIFICATION.
5. Disconnect Body Control Module (BCM) (Bone) 12-pin connector. Using a DVOM, measure resistance of PCI BUS circuit between BCM connector terminal No. 1 and PCM connector terminal No. 59. See BCM CONNECTOR WIRE IDENTIFICATION table and PCM CONNECTOR WIRE
IDENTIFICATION table. If resistance is less than 10 ohms, replace BCM. Perform TEST VER-2A: ROAD TEST VERIFICATION. If resistance is 10 ohms or more, repair open PCI BUS circuit. Perform
TEST VER-2A: ROAD TEST VERIFICATION.
6. Condition to set trouble code is not present at this time. Inspect all related wiring and connectors and repair as necessary. If no problems were found with wiring and connectors, go to next step. If related wiring and connectors were repaired, perform TEST VER-2A: ROAD TEST VERIFICATION.
7. Using scan tool, erase DTCs. Turn ignition off. Turn ignition on and start engine. While monitoring scan tool display, wiggle wiring harness between Transmission Control Module (TCM) and Body Control Module (BCM). Take vehicle for a short test drive. After test drive, using scan tool, check for DTCs. If BUS DTC is present go to step 1 and perform procedure again. If BUS DTC did not return, see INACTIVE TROUBLE CODE CONDITION under SELF-DIAGNOSTICS. Test is complete. Perform
TEST VER-2A: ROAD TEST VERIFICATION.
BCM CONNECTOR WIRE IDENTIFICATION
Application BCM Terminal No. 1 PCI BUS Circuit
Wire Color
Yellow/Violet
PCM CONNECTOR WIRE IDENTIFICATION Application PCM Terminal No. 59 PCI BUS Circuit
Wire Color
Yellow/Violet
Saturday, October 25th, 2008 AT 4:58 PM
