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413-01-24 413-01-24 Instrument Cluster DIAGNOSIS AND TESTING (Continued) PINPOINT TEST N: POWER LIMIT WARNING INDICATOR DOES NOT OPERATE OR STAYS ON TEST STEP ACTION TO TAKE N1 IDENTIFY SYMPTOM NOTE: Verify no diagnostic trouble codes (DTCs) exist and the traction Yes = GO to N8. battery is charged to full state of charge (SOC) before carrying out the following test steps. • With key ON, identify the symptom. • Does the power limit warning indicator stay on continuously? No = GO to N2. N2 CHECK OPERATION OF POWER LIMIT WARNING 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. PWR LIMIT to ON. • Does the power limit warning indicator illuminate? No = GO to N3. N3 CHECK POWER LIMIT WARNING INDICATOR CONTROL CIRCUIT • Connect 104-Pin Breakout Box (BOB) to IAA module C1945; leave IAA Yes = REPLACE the IAA module. module disconnected. REFER to • With key OFF, connect a jumper wire between BOB pin 8 and ground No = GO to N4. (BOB pin 80). • Does the power limit warning indicator illuminate? N4 CHECK POWER LIMIT WARNING INDICATOR BULB • With key OFF, remove and check the power limit warning indicator Yes = GO to N5. bulb. • Is the bulb OK? No = REPLACE the bulb. N5 CHECK CIRCUIT 3400 (BR/LB) FOR OPEN • With key OFF, disconnect instrument cluster C214 and measure the Yes = GO to N6. resistance of the BR/LB wire between pin 3 on instrument cluster C214 and BOB pin 8. • Is the resistance less than 5 ohms? No = REPAIR the BR/LB wire. N6 CHECK CIRCUIT 3400 (BR/LB) FOR SHORT TO POWER • With key ON, measure the voltage between BOB pin 8 and ground Yes = REPAIR the BR/LB wire. (BOB pin 80). • Is the voltage greater than 0 volts? No = GO to N7. N7 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. N8 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 C214 and measure the No = GO to N9. resistance between BOB pin 8 and ground (BOB pin 80). • Is the resistance greater than 10,000 ohms? N9 CHECK CIRCUIT 3400 (BR/LB) 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 8 and ground No = REPAIR the BR/LB wire. (BOB pin 80). • Is the resistance greater than 10,000 ohms? |