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413-01-20 413-01-20 Instrument Cluster DIAGNOSIS AND TESTING (Continued) PINPOINT TEST J: POWER RESET INDICATOR DOES NOT OPERATE OR STAYS ON CONTINUOUSLY TEST STEP ACTION TO TAKE • With key OFF, connect a jumper wire between BOB pin 9 and ground No = GO to J4. (BOB pin 80). • Does the power reset indicator illuminate? J4 CHECK POWER RESET INDICATOR BULB • With key OFF, remove and check the power reset indicator bulb. Yes = GO to J5. • Is the bulb OK? No = REPLACE the bulb. J5 CHECK CIRCUIT 3402 (W/BK) FOR OPEN • With key OFF, disconnect instrument cluster C215 and measure the Yes = GO to J6. resistance of the W/BK wire between pin 2 on instrument cluster C215 and BOB pin 9. • Is the resistance less than 5 ohms? No = REPAIR the W/BK wire. J6 CHECK CIRCUIT 3402 (W/BK) FOR SHORT TO POWER • With key ON, measure the voltage between BOB pin 9 and ground Yes = REPAIR the W/BK wire. (BOB pin 80). • Is the voltage greater than 0 volts? No = GO to J7. J7 CHECK POWER TO INSTRUMENT CLUSTER • With key OFF, measure the voltage between pin 1 (LB wire), pin 12 (LB Yes = REPLACE the instrument wire) on instrument cluster C215 and ground. cluster. • Is the voltage greater than 10 volts? No = REPAIR the LB wire(s) in question. J8 CHECK INSTRUMENT CLUSTER • Connect 104-Pin Breakout Box (BOB) to the IAA module and IAA Yes = REPLACE the instrument module C1945. cluster. • With key OFF, disconnect instrument cluster C215 and measure the No = GO to J9. resistance between BOB pin 9 and ground (BOB pin 80). • Is the resistance greater than 10,000 ohms? J9 CHECK CIRCUIT 3402 (W/BK) FOR SHORT TO GROUND • With key OFF, disconnect the IAA module from the BOB; leave BOB Yes = REPLACE the IAA module. connected to IAA module C1945. REFER to • With key OFF, measure the resistance between BOB pin 9 and ground No = REPAIR the W/BK wire. (BOB pin 80). • Is the resistance greater than 10,000 ohms? PINPOINT TEST K: CHARGE INDICATOR DOES NOT OPERATE OR STAYS ON CONTINUOUSLY TEST STEP ACTION TO TAKE K1 IDENTIFY SYMPTOM NOTE: Verify the vehicle is not connected to a power control station Yes = (PCS) before carrying out the following test steps. • With key ON, identify the symptom. • Does the charge indicator stay on continuously? No = GO to K2. K2 CHECK OPERATION OF CHARGE INDICATOR • Enter the interface adapter assembly (IAA) module active command Yes = System OK. CHECK wiring mode INDICATOR LAMP CONTROL III and set the active command for intermittent connections. CHARGE to ON. • Does the charge indicator illuminate? No = GO to K3. K3 CHECK CHARGE INDICATOR CONTROL CIRCUIT • Connect 104-Pin Breakout Box (BOB) to interface adapter assembly Yes = REPLACE the IAA module. (IAA) module C1945; leave IAA module disconnected. REFER to (Continued) |